答复: 答复: 答复: 答复: How to build openjdk mobile project android platform successfully and how does the mobile project adapt to bionic C ?

[zhangfan (AZ)]

Hi,

I use parameters as the guide indicates:

$HOME/jdk9mobile/android-ndk-r10b/build/tools/make-standalone-toolchain.sh \
--arch=arm \
--platform=android-19 \
--install-dir=$HOME/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain


And there's no ucontext.h in the sysroot (/home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/sysroot).




-----邮件原件-----
发件人: Gary Adams [mailto:gary.adams at oracle.com] 
发送时间: 2018年8月29日 19:53
收件人: Magnus Ihse Bursie <magnus.ihse.bursie at oracle.com>; zhangfan (AZ) <zhangfan147 at huawei.com>
抄送: Johan Vos <johan.vos at gluonhq.com>; yuanxiang (F) <yuanxiang4 at huawei.com>; xieshengzhen <xieshengzhen at huawei.com>; xietuo <xietuo at huawei.com>; dingbin (C) <dingbin5 at huawei.com>; mobile-dev at openjdk.java.net
主题: Re: 答复: 答复: 答复: How to build openjdk mobile project android platform successfully and how does the mobile project adapt to bionic C ?

When you generated the stand alone android toolchain what parameter did 
you give for "--api".
I see from my local scripts we were using "--api 19" for 32 bit platforms.
e.g.  android-ndk-13b/platforms/android-19/arch-x86/usr/include/ucontext.h


On 8/29/18, 7:37 AM, Magnus Ihse Bursie wrote:
> Is there indeed an ucontext.h in the sysroot 
> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/sysroot?
>
> /Magnus
>
> On 2018-08-28 11:15, zhangfan (AZ) wrote:
>> Hi,
>>
>> configure.log
>> ##################################################################################################### 
>>
>> configure: Configuration created at Tue Aug 28 15:44:23 CST 2018.
>> configure: configure script generated at timestamp 1498218636.
>> checking for basename... /usr/bin/basename
>> checking for bash... /bin/bash
>> checking for cat... /bin/cat
>> checking for chmod... /bin/chmod
>> checking for cmp... /usr/bin/cmp
>> checking for comm... /usr/bin/comm
>> checking for cp... /bin/cp
>> checking for cut... /usr/bin/cut
>> checking for date... /bin/date
>> checking for gdiff... no
>> checking for diff... /usr/bin/diff
>> checking for dirname... /usr/bin/dirname
>> checking for echo... /bin/echo
>> checking for expr... /usr/bin/expr
>> checking for file... /usr/bin/file
>> checking for find... /usr/bin/find
>> checking for head... /usr/bin/head
>> checking for gunzip... /bin/gunzip
>> checking for pigz... /usr/bin/pigz
>> checking for ln... /bin/ln
>> checking for ls... /bin/ls
>> checking for mkdir... /bin/mkdir
>> checking for mktemp... /bin/mktemp
>> checking for mv... /bin/mv
>> checking for nawk... /usr/bin/nawk
>> checking for printf... /usr/bin/printf
>> checking for rm... /bin/rm
>> checking for rmdir... /bin/rmdir
>> checking for sh... /bin/sh
>> checking for sort... /usr/bin/sort
>> checking for tail... /usr/bin/tail
>> checking for gtar... no
>> checking for tar... /bin/tar
>> checking for tee... /usr/bin/tee
>> checking for touch... /bin/touch
>> checking for tr... /usr/bin/tr
>> checking for uname... /bin/uname
>> checking for uniq... /usr/bin/uniq
>> checking for wc... /usr/bin/wc
>> checking for which... /bin/which
>> checking for xargs... /usr/bin/xargs
>> checking for gawk... gawk
>> checking for grep that handles long lines and -e... /bin/grep
>> checking for egrep... /bin/grep -E
>> checking for fgrep... /bin/grep -F
>> checking for a sed that does not truncate output... /bin/sed
>> checking for cygpath... no
>> checking for greadlink... no
>> checking for readlink... /bin/readlink
>> checking for df... /bin/df
>> checking for cpio... /bin/cpio
>> checking for nice... /usr/bin/nice
>> checking for pandoc... no
>> checking build system type... x86_64-unknown-linux-gnu
>> checking host system type... arm-linux-androideabi
>> checking target system type... arm-linux-androideabi
>> checking openjdk-build os-cpu... linux-x86_64
>> checking openjdk-target os-cpu... android-arm
>> checking compilation type... cross
>> checking for top-level directory... 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9
>> checking if custom source is suppressed (openjdk-only)... no
>> checking which variant of the JDK to build... normal
>> checking which debug level to use... release
>> checking which variants of the JVM to build... zero
>> checking for devkit... Android ARM in 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain
>> checking for sysroot... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/sysroot
>> checking for toolchain path... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin
>> checking for extra path...
>> checking where to store configuration... in default location
>> checking what configuration name to use... 
>> android-arm-normal-zero-release
>> checking for apt-get... apt-get
>> checking for gmake... no
>> checking for make... /usr/bin/make
>> configure: Testing potential make at /usr/bin/make, found using make 
>> in PATH
>> configure: Using GNU make at /usr/bin/make (version: GNU Make 4.1)
>> checking if make --output-sync is supported... yes
>> checking for output-sync value... none
>> checking if find supports -delete... yes
>> checking what type of tar was found... gnu
>> checking that grep (/bin/grep) -Fx handles empty lines in the pattern 
>> list correctly... yes
>> checking for unzip... /usr/bin/unzip
>> checking for zip... /usr/bin/zip
>> checking for ldd... /usr/bin/ldd
>> checking for otool... no
>> checking for greadelf... no
>> checking for readelf... /usr/bin/readelf
>> checking for dot... /usr/bin/dot
>> checking for hg... /usr/bin/hg
>> checking for stat... /usr/bin/stat
>> checking for time... /usr/bin/time
>> checking for dtrace... no
>> checking for gpatch... no
>> checking for patch... /usr/bin/patch
>> checking bash version... 4.3.48
>> checking if bash supports pipefail... yes
>> checking if bash supports errexit (-e)... yes
>> checking for arm-linux-androideabi-pkg-config... no
>> checking for pkg-config... /usr/bin/pkg-config
>> configure: WARNING: using cross tools not prefixed with host triplet
>> checking pkg-config is at least version 0.9.0... yes
>> checking headless only... yes
>> checking for graphviz dot... yes
>> checking for pandoc... no, cannot generate full docs
>> checking full docs... no, missing dependencies
>> checking if packaged modules are kept... yes (default)
>> checking for version string... 9-internal+0-adhoc.zhangfan.mobile-jdk9
>> configure: Found potential Boot JDK using JAVA_HOME
>> configure: Potential Boot JDK found at 
>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192/bin did not contain 
>> bin/java; ignoring
>> checking for javac... 
>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192/bin/javac
>> checking for java... 
>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192/bin/java
>> configure: Found potential Boot JDK using java(c) in PATH
>> checking for Boot JDK... 
>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192
>> checking Boot JDK version... java version "1.8.0_192-ea" Java(TM) SE 
>> Runtime Environment (build 1.8.0_192-ea-b04) Java HotSpot(TM) 64-Bit 
>> Server VM (build 25.192-b04, mixed mode)
>> checking for java in Boot JDK... ok
>> checking for javac in Boot JDK... ok
>> checking for javah in Boot JDK... ok
>> checking for jar in Boot JDK... ok
>> checking for jarsigner in Boot JDK... ok
>> checking if Boot JDK supports modules... no
>> checking if Boot JDK is 32 or 64 bits... 64
>> checking for Build JDK... yes, will build it for the host platform
>> configure: Using default toolchain gcc (GNU Compiler Collection)
>> checking for arm-linux-androideabi-gcc... no
>> checking for gcc... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/gcc
>> checking resolved symbolic links for CC... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/bin/arm-linux-androideabi-gcc
>> configure: Using gcc C compiler version 4.6 [gcc (GCC) 4.6 20120106 
>> (prerelease)]
>> checking for 
>> arm-linux-androideabi-/home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/gcc... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/gcc 
>>
>> checking whether the C compiler works... yes
>> checking for C compiler default output file name... a.out
>> checking for suffix of executables...
>> checking whether we are cross compiling... yes
>> checking for suffix of object files... o
>> checking whether we are using the GNU C compiler... yes
>> checking whether 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/gcc 
>> accepts -g... yes
>> checking for 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/gcc 
>> option to accept ISO C89... none needed
>> checking for arm-linux-androideabi-g++... no
>> checking for g++... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/g++
>> checking resolved symbolic links for CXX... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/bin/arm-linux-androideabi-g++
>> configure: Using gcc C++ compiler version 4.6 [g++ (GCC) 4.6 20120106 
>> (prerelease)]
>> checking whether we are using the GNU C++ compiler... yes
>> checking whether 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/g++ 
>> accepts -g... yes
>> checking how to run the C preprocessor... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/gcc 
>> -E
>> checking how to run the C++ preprocessor... 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/g++ 
>> -E
>> checking for arm-linux-androideabi-ar... arm-linux-androideabi-ar
>> configure: Rewriting AR to 
>> "/home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/bin/arm-linux-androideabi-ar"
>> checking for arm-linux-androideabi-strip... arm-linux-androideabi-strip
>> configure: Rewriting STRIP to 
>> "/home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/bin/arm-linux-androideabi-strip"
>> checking for arm-linux-androideabi-nm... arm-linux-androideabi-nm
>> configure: Rewriting NM to 
>> "/home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/bin/arm-linux-androideabi-nm"
>> checking for arm-linux-androideabi-gobjcopy... no
>> checking for arm-linux-androideabi-objcopy... 
>> arm-linux-androideabi-objcopy
>> configure: Rewriting OBJCOPY to 
>> "/home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/bin/arm-linux-androideabi-objcopy"
>> checking for arm-linux-androideabi-gobjdump... no
>> checking for arm-linux-androideabi-objdump... 
>> arm-linux-androideabi-objdump
>> configure: Rewriting OBJDUMP to 
>> "/home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/bin/arm-linux-androideabi-objdump"
>> checking for cl... no
>> checking for cc... /usr/bin/cc
>> checking for cl... no
>> checking for CC... no
>> checking for g++... /usr/bin/g++
>> checking for nm... /usr/bin/nm
>> checking for ar... /usr/bin/ar
>> checking for objcopy... /usr/bin/objcopy
>> checking for strip... /usr/bin/strip
>> configure: Using gcc BuildC compiler version 5.4.0 [cc (Ubuntu 
>> 5.4.0-6ubuntu1~16.04.5) 5.4.0 20160609]
>> configure: Using gcc BuildC++ compiler version 5.4.0 [g++ (Ubuntu 
>> 5.4.0-6ubuntu1~16.04.5) 5.4.0 20160609]
>> checking if the C compiler supports "-Og"... no
>> checking if the C++ compiler supports "-Og"... no
>> checking if both compilers support "-Og"... no
>> checking if linker supports "-Wl,-z,relro"... yes
>> checking if linker supports "-Wl,-z,now"... yes
>> checking for jtreg... no
>> checking for jtreg test harness... no, not found
>> checking if @file is supported by gcc... yes
>> checking for ANSI C header files... yes
>> checking for sys/types.h... yes
>> checking for sys/stat.h... yes
>> checking for stdlib.h... yes
>> checking for string.h... yes
>> checking for memory.h... yes
>> checking for strings.h... yes
>> checking for inttypes.h... yes
>> checking for stdint.h... yes
>> checking for unistd.h... yes
>> checking stdio.h usability... yes
>> checking stdio.h presence... yes
>> checking for stdio.h... yes
>> checking size of int *... 4
>> checking for target address size... 32 bits
>> checking whether byte ordering is bigendian... no
>> checking if the C++ compiler supports "-std=gnu++98 -Werror"... yes
>> checking if the C++ compiler supports "-std=gnu++98 -Werror"... yes
>> checking if the C compiler supports "-m32"... no
>> checking if the C++ compiler supports "-m32"... no
>> checking if both compilers support "-m32"... no
>> checking if native warnings are errors... no
>> checking if the C compiler supports 
>> "-Wno-this-is-a-warning-that-do-not-exist"... yes
>> checking if the C++ compiler supports 
>> "-Wno-this-is-a-warning-that-do-not-exist"... yes
>> checking if both compilers support 
>> "-Wno-this-is-a-warning-that-do-not-exist"... yes
>> checking if the C compiler supports 
>> "-Wno-this-is-a-warning-that-do-not-exist"... no
>> checking if the C++ compiler supports 
>> "-Wno-this-is-a-warning-that-do-not-exist"... no
>> checking if both compilers support 
>> "-Wno-this-is-a-warning-that-do-not-exist"... no
>> checking what type of native debug symbols to use... zipped
>> checking for dtrace tool... not found, cannot build dtrace
>> checking sys/sdt.h usability... no
>> checking sys/sdt.h presence... no
>> checking for sys/sdt.h... no
>> checking if dtrace should be built... no, missing dependencies
>> checking if Hotspot gtest unit tests should be built... yes
>> checking if static link of stdc++ is possible... yes
>> checking how to link with libstdc++... static
>> checking for cups headers... yes
>> configure: Found freetype include files at 
>> /home/zhangfan/code/dev/jdk9mobile/freetype-2.6.2/build_android-arm/include/freetype2 
>> using --with-freetype
>> checking for freetype includes... 
>> /home/zhangfan/code/dev/jdk9mobile/freetype-2.6.2/build_android-arm/include/freetype2
>> checking for freetype libraries... 
>> /home/zhangfan/code/dev/jdk9mobile/freetype-2.6.2/build_android-arm/lib
>> checking if we can compile and link with freetype... yes
>> checking if we should bundle freetype... yes
>> checking if libffi works... yes
>> checking if libffi should be bundled... no
>> checking for which libjpeg to use... bundled
>> checking for which giflib to use... bundled
>> checking for which libpng to use... bundled
>> checking for compress in -lz... yes
>> checking for which zlib to use... system
>> checking for which lcms to use... bundled
>> checking for cos in -lm... yes
>> checking for dlopen in -ldl... yes
>> checking if jdk.internal.vm.compiler should be built... no
>> checking if aot should be enabled... no
>> checking if elliptic curve crypto implementation is present... yes
>> checking if jtreg failure handler should be built... no, missing jtreg
>> checking if the CDS classlist generation should be enabled... no
>> checking for number of cores... 144
>> checking for memory size... 515824 MB
>> checking for appropriate number of jobs to run in parallel... 144
>> checking flags for boot jdk java command ...  -Duser.language=en 
>> -Duser.country=US
>> checking flags for boot jdk java command for big workloads...  
>> -Xms64M -Xmx1600M -XX:ThreadStackSize=1536
>> checking flags for bootcycle boot jdk java command for big 
>> workloads... -Xms64M -Xmx1024M -XX:ThreadStackSize=768
>> checking flags for boot jdk java command for small workloads...  
>> -XX:+UseSerialGC -Xms32M -Xmx512M -XX:TieredStopAtLevel=1
>> checking whether to use sjavac... no
>> checking whether to use javac server... yes
>> checking If precompiled header is enabled... yes
>> checking that precompiled headers work... yes
>> checking is ccache enabled... no
>> checking if build directory is on local disk... yes
>> checking JVM features for JVM variant 'zero'... all-gcs cds fprof 
>> jni-check jvmti management nmt services vm-structs zero
>> configure: creating 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/configure-support/config.status
>> config.status: creating 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/spec.gmk
>> config.status: creating 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/bootcycle-spec.gmk
>> config.status: creating 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/buildjdk-spec.gmk
>> config.status: creating 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/compare.sh
>> config.status: creating 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/Makefile
>>
>> ====================================================
>> A new configuration has been successfully created in
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release 
>>
>> using configure arguments '--enable-option-checking=fatal 
>> --build=x86_64-unknown-linux-gnu --host=arm-linux-androideabi 
>> --target=arm-linux-androideabi --disable-warnings-as-errors 
>> --enable-headless-only --with-jdk-variant=normal 
>> --with-jvm-variants=zero 
>> --with-libffi-include=/home/zhangfan/code/dev/jdk9mobile/libffi-3.2.1/build_android-arm/include 
>> --with-libffi-lib=/home/zhangfan/code/dev/jdk9mobile/libffi-3.2.1/build_android-arm/lib 
>> --with-cups-include=/home/zhangfan/code/dev/jdk9mobile 
>> --with-devkit=/home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain 
>> --with-debug-level=release 
>> --with-freetype-lib=/home/zhangfan/code/dev/jdk9mobile/freetype-2.6.2/build_android-arm/lib 
>> --with-freetype-include=/home/zhangfan/code/dev/jdk9mobile/freetype-2.6.2/build_android-arm/include/freetype2'. 
>>
>>
>> Configuration summary:
>> * Debug level:    release
>> * HS debug level: product
>> * JDK variant:    normal
>> * JVM variants:   zero
>> * OpenJDK target: OS: android, CPU architecture: arm, address length: 32
>> * Version string: 9-internal+0-adhoc.zhangfan.mobile-jdk9 (9-internal)
>>
>> Tools summary:
>> * Boot JDK:       java version "1.8.0_192-ea" Java(TM) SE Runtime 
>> Environment (build 1.8.0_192-ea-b04) Java HotSpot(TM) 64-Bit Server 
>> VM (build 25.192-b04, mixed mode)  (at 
>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192)
>> * Toolchain:      gcc (GNU Compiler Collection)
>> * C Compiler:     Version 4.6 (at 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/gcc)
>> * C++ Compiler:   Version 4.6 (at 
>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolchains/android-arm-toolchain/arm-linux-androideabi/bin/g++)
>>
>> Build performance summary:
>> * Cores to use:   144
>> * Memory limit:   515824 MB
>>
>> The following warnings were produced. Repeated here for convenience:
>> WARNING: using cross tools not prefixed with host triplet
>> ##################################################################################################### 
>>
>>
>>
>> build.log
>> ##################################################################################################### 
>>
>> Building target 'jre-image' in configuration 
>> 'android-arm-normal-zero-release'
>> Compiling 8 files for BUILD_TOOLS_LANGTOOLS
>> Compiling 2 files for BUILD_JVMTI_TOOLS
>> Creating support/modules_libs/java.base/libjsig.so from 1 file(s)
>> Compiling 19 properties into resource bundles for jdk.javadoc
>> Compiling 7 properties into resource bundles for jdk.jshell
>> Compiling 12 properties into resource bundles for jdk.jdeps
>> Parsing 1 properties into enum-like class for jdk.compiler
>> Compiling 17 properties into resource bundles for jdk.compiler
>> Compiling 117 files for BUILD_INTERIM_java.compiler
>> Creating support/modules_libs/java.base/server/libjvm.so from 547 
>> file(s)
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/parallel/asPSYoungGen.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/interpreter/abstractInterpreter.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/cpu/zero/vm/abstractInterpreter_zero.cpp:26:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/ageTable.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/parallel/adjoiningVirtualSpaces.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/allocTracer.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/compiler/abstractCompiler.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/allocation.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/allocation.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/cms/allocationStats.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> make[3]: *** Waiting for unfinished jobs....
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/interpreter/bytecodeHistogram.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/adjoiningVirtualSpaces.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/adjoiningVirtualSpaces.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/basicLock.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/classfile/classLoaderData.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/classfile/moduleEntry.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/classfile/vmSymbols.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp:26:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/blockOffsetTable.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/interpreter/bytecode.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/serial/cSpaceCounters.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/allocTracer.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/allocTracer.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/classfile/bytecodeAssembler.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/asPSYoungGen.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/asPSYoungGen.o' 
>> failed
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/binaryTreeDictionary.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/interpreter/bytecodes.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/abstractCompiler.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/abstractCompiler.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/abstractInterpreter_zero.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/abstractInterpreter_zero.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/advancedThresholdPolicy.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/advancedThresholdPolicy.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/basicLock.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/basicLock.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/cms/adaptiveFreeList.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/classfile/altHashing.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/os/linux/vm/attachListener_linux.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/interpreter/bytecodeTracer.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/asPSOldGen.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/asPSOldGen.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/cpu/zero/vm/bytecodeInterpreter_zero.cpp:26:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/parallel/adjoiningGenerations.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/blockOffsetTable.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/blockOffsetTable.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/parallel/asPSOldGen.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecode.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecode.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/adaptiveSizePolicy.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/interpreter/bytecodeStream.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/advancedThresholdPolicy.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeAssembler.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeAssembler.o' 
>> failed
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/arguments.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/arguments_ext.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/ageTableTracer.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/services/attachListener.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/annotations.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeInterpreter_zero.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeInterpreter_zero.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/altHashing.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/altHashing.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeHistogram.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/adjoiningGenerations.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeInterpreter.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/abstractInterpreter.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/assembler.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodes.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/adaptiveSizePolicy.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ageTable.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/adaptiveFreeList.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ageTableTracer.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeStream.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/arguments.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cSpaceCounters.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciConstantPoolCache.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/annotations.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/allocationStats.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciArray.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/attachListener.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/attachListener_linux.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeTracer.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/barrierSet.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bitMap.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciInstanceKlass.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardTableExtension.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/arguments_ext.o' 
>> failed
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciArray.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeHistogram.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/adjoiningGenerations.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeInterpreter.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/abstractInterpreter.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/barrierSet.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciInstanceKlass.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/assembler.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodes.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciConstantPoolCache.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/adaptiveSizePolicy.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ageTable.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/bitMap.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/adaptiveFreeList.lib/CompileJvm.gmk:214: 
>> recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/binaryTreeDictionary.o' 
>> failed
>> o] Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ageTableTracer.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeStream.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/arguments.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/parallel/cardTableExtension.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cSpaceCounters.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciConstantPoolCache.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/annotations.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/accessFlags.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/allocationStats.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciArray.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/attachListener.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/attachListener_linux.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/cardTableModRefBS.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeTracer.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/classfile/classLoaderData.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/classfile/moduleEntry.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/classfile/vmSymbols.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp:26,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/gensrc/jvmtifiles/bytecodeInterpreterWithChecks.cpp:3:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/barrierSet.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciCallSite.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/biasedLocking.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciField.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bitMap.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciInstanceKlass.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciInstance.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardTableExtension.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/arguments_ext.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciKlass.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciMemberName.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/binaryTreeDictionary.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/cpu/zero/vm/assembler_zero.cpp:26:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/cardTableRS.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/accessFlags.o' 
>> failed
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciFlags.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/accessFlags.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciCallSite.o' 
>> failed
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciEnv.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciCallSite.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciExceptionHandler.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/cardGeneration.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/gc/shared/cardTableModRefBSForCTRS.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciField.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciField.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/biasedLocking.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/biasedLocking.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciInstance.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciInstance.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/arrayKlass.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciKlass.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciKlass.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciConstant.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardTableRS.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardTableRS.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciMemberName.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciMemberName.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciFlags.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciFlags.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciEnv.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciEnv.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/assembler_zero.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/assembler_zero.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciArrayKlass.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciExceptionHandler.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciExceptionHandler.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardGeneration.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardGeneration.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciBaseObject.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardTableModRefBSForCTRS.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardTableModRefBSForCTRS.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeInterpreterWithChecks.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/bytecodeInterpreterWithChecks.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciMethodBlocks.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciMethodBlocks.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardTableModRefBS.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/cardTableModRefBS.o' 
>> failed
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/arrayKlass.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/arrayKlass.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciConstant.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciConstant.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciArrayKlass.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciArrayKlass.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciMethod.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciBaseObject.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciBaseObject.o] 
>> Error 1
>> In file included from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions.hpp:33:0,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/debug.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/globals.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/allocation.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/iterator.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/oops/oop.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/runtime/handles.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/memory/universe.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/code/oopRecorder.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/codeBuffer.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/asm/assembler.hpp:28,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/precompiled/precompiled.hpp:29,
>>                   from 
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/ci/ciMetadata.cpp:25:
>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm/utilities/globalDefinitions_gcc.hpp:79:22: 
>> fatal error: ucontext.h: No such file or directory
>> compilation terminated.
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciMethod.o' 
>> failed
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciMethod.o] 
>> Error 1
>> make[3]: *** 
>> [/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciMetadata.o] 
>> Error 1
>> lib/CompileJvm.gmk:214: recipe for target 
>> '/home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/build/android-arm-normal-zero-release/hotspot/variant-zero/libjvm/objs/ciMetadata.o' 
>> failed
>> make[2]: *** [hotspot-zero-libs] Error 1
>> make/Main.gmk:263: recipe for target 'hotspot-zero-libs' failed
>> make[2]: *** Waiting for unfinished jobs....
>> Compiling 396 files for BUILD_INTERIM_jdk.compiler
>> Compiling 61 files for BUILD_INTERIM_jdk.jdeps
>> Compiling 457 files for BUILD_INTERIM_jdk.javadoc
>> Note: Some input files use or override a deprecated API.
>> Note: Recompile with -Xlint:deprecation for details.
>>
>> ERROR: Build failed for target 'jre-image' in configuration 
>> 'android-arm-normal-zero-release' (exit code 2)
>> ----- Build times -------
>> Start 2018-08-28 15:45:30
>> End   2018-08-28 15:45:46
>>
>> 00:00:16 TOTAL
>> -------------------------
>>
>> ##################################################################################################### 
>>
>>
>>
>>
>>
>>
>> -----邮件原件-----
>> 发件人: Magnus Ihse Bursie [mailto:magnus.ihse.bursie at oracle.com]
>> 发送时间: 2018年8月28日 17:11
>> 收件人: zhangfan (AZ) <zhangfan147 at huawei.com>; Johan Vos 
>> <johan.vos at gluonhq.com>
>> 抄送: xieshengzhen <xieshengzhen at huawei.com>; dingbin (C) 
>> <dingbin5 at huawei.com>; yuanxiang (F) <yuanxiang4 at huawei.com>; 
>> mobile-dev at openjdk.java.net; xietuo <xietuo at huawei.com>
>> 主题: Re: 答复: 答复: How to build openjdk mobile project android 
>> platform successfully and how does the mobile project adapt to bionic 
>> C ?
>>
>> On 2018-08-28 09:44, zhangfan (AZ) wrote:
>>> Hi,
>>>
>>> Attachments are my configure and build’s logs and outputs.
>>> Please help figure out how to build the mobile project successfully.
>> Unfortunately, attachments are stripped by the mailing list server. :-(
>>
>> Please include them inline in the text, or put them on an extern site.
>>
>> /Magnus
>>>
>>> 发件人: Johan Vos [mailto:johan.vos at gluonhq.com]
>>> 发送时间: 2018年8月28日 15:20
>>> 收件人: zhangfan (AZ) <zhangfan147 at huawei.com>
>>> 抄送: gary.adams at oracle.com; mobile-dev at openjdk.java.net; xietuo
>>> <xietuo at huawei.com>
>>> 主题: Re: 答复: How to build openjdk mobile project android platform 
>>> successfully and how does the mobile project adapt to bionic C ?
>>>
>>> Hi,
>>>
>>> Configuration and build logs are always helpful.
>>>
>>> - Johan
>>>
>>> On Tue, Aug 28, 2018 at 4:04 AM zhangfan (AZ) 
>>> <zhangfan147 at huawei.com<mailto:zhangfan147 at huawei.com>> wrote:
>>> Hi,
>>>
>>> I tried using a newer toolchian (android-ndk-13b) and also adding 
>>> back the code as you guided, but still failed.
>>> I think could you help provide your steps and configurations that 
>>> can build the mobile project android platform successfully ?
>>> Or need I attach the full configuration and build logs ?
>>> Thanks!
>>>
>>>
>>>
>>>
>>> -----邮件原件-----
>>> 发件人: gary.adams at oracle.com<mailto:gary.adams at oracle.com>
>>> [mailto:gary.adams at oracle.com<mailto:gary.adams at oracle.com>]
>>> 发送时间: 2018年8月25日 19:32
>>> 收件人: zhangfan (AZ)
>>> <zhangfan147 at huawei.com<mailto:zhangfan147 at huawei.com>>;
>>> mobile-dev at openjdk.java.net<mailto:mobile-dev at openjdk.java.net>
>>> 抄送: xietuo <xietuo at huawei.com<mailto:xietuo at huawei.com>>
>>> 主题: Re: 答复: How to build openjdk mobile project android platform 
>>> successfully and how does the mobile project adapt to bionic C ?
>>>
>>> It looks like there was an update in the toolchain and the 
>>> workaround was removed in perfMemory_linux.cpp when andoid-arm 
>>> support was included in the mobile repos.
>>>
>>>      http://hg.openjdk.java.net/mobile/jdk9/hotspot/rev/647ec6c17c56
>>>
>>> You could try adding back the code that was removed, or move up to a
>>> newer toolchain. e.g android-ndk-13b was the last toolchain we used
>>>
>>> On 8/25/18 6:57 AM, 
>>> gary.adams at oracle.com<mailto:gary.adams at oracle.com> wrote:
>>>> The android compiler will set the __ANDROID__ build flag.
>>>> The __ANDROID__ workarounds are in the mobile repos.
>>>>
>>>>   From the  LOG=debug output can you provide the command line used to
>>>> compile the file that is failing.
>>>>
>>>> I'm not sure you have the right sources or toolchain setup.
>>>>
>>>> On 8/25/18 2:15 AM, zhangfan (AZ) wrote:
>>>>> Hi,
>>>>>
>>>>> Thank you for your quick response.
>>>>> I tried the "make jre-image" command and failed in the same way.
>>>>> Do I need to enable the "__ANDROID__" manually? Because the build
>>>>> errors occur due to the use of the lacking functions the bionic
>>>>> doesn't provide.
>>>>>
>>>>>
>>>>> -----邮件原件-----
>>>>> 发件人: mobile-dev
>>>>> [mailto:mobile-dev-bounces at openjdk.java.net<mailto:mobile-dev-bounce
>>>>> s at openjdk.java.net>] 代表
>>>>> gary.adams at oracle.com<mailto:gary.adams at oracle.com>
>>>>> 发送时间: 2018年8月24日 18:45
>>>>> 收件人: guoge (A) <guoge1 at huawei.com<mailto:guoge1 at huawei.com>>;
>>>>> mobile-dev at openjdk.java.net<mailto:mobile-dev at openjdk.java.net>
>>>>> 抄送: xietuo <xietuo at huawei.com<mailto:xietuo at huawei.com>>
>>>>> 主题: Re: How to build openjdk mobile project android platform
>>>>> successfully and how does the mobile project adapt to bionic C ?
>>>>>
>>>>> Only the java runtime libraries were ported to run in the Android
>>>>> app environment.
>>>>> You can not build a full jdk image.
>>>>>
>>>>> The mobile repos already has the needed "#if defined(__ANDROID__) 
>>>>> ..."
>>>>> directives with alternate implementations for missing bionic 
>>>>> functions.
>>>>>
>>>>> To debug build errors it helps to add "LOG=debug" to your make
>>>>> command line.
>>>>> The error may be in the creation of a local build-jdk image prior to
>>>>> the building of the target platform jre libraries.
>>>>>
>>>>> On 8/24/18 4:13 AM, guoge (A) wrote:
>>>>>> Hi mobile-dev,
>>>>>>
>>>>>>                     I want to build an android openjdk from the
>>>>>> mobile
>>>>>> project.(http://hg.openjdk.java.net/mobile/jdk9/)
>>>>>>                     I followed the
>>>>>> guide(http://openjdk.java.net/projects/mobile/android.html) but
>>>>>> failed in the "make images" phase.
>>>>>>                     I tried two versions of NDK
>>>>>> toolchains(android-ndk32-r10b-linux-x86_64 and
>>>>>> android-ndk-r10e-linux-x86_64) and the followings are the configure
>>>>>> and make images command outputs, could you help figure out why the
>>>>>> project can't be built successfully?
>>>>>>
>>>>>>                     In addition, could you tell me how the mobile
>>>>>> project adapts to the bionic C when bionic C lacks some functions
>>>>>> the openjdk needs(such as ucontext.h, getpwuid_r etc.)?
>>>>>>
>>>>>>                     Thanks.
>>>>>>
>>>>>>
>>>>>> android-ndk-r10b
>>>>>> -------------------------------------------------------------------
>>>>>> -
>>>>>> -- 
>>>>>> ----
>>>>>> configure:
>>>>>> Configuration summary:
>>>>>> * Debug level:    release
>>>>>> * HS debug level: product
>>>>>> * JDK variant:    normal
>>>>>> * JVM variants:   zero
>>>>>> * OpenJDK target: OS: android, CPU architecture: arm, address 
>>>>>> length:
>>>>>> 32
>>>>>> * Version string: 9-internal+0-adhoc.zhangfan.mobile-jdk9
>>>>>> (9-internal)
>>>>>>
>>>>>> Tools summary:
>>>>>> * Boot JDK:       java version "1.8.0_192-ea" Java(TM) SE Runtime
>>>>>> Environment (build 1.8.0_192-ea-b04) Java HotSpot(TM) 64-Bit Server
>>>>>> VM (build 25.192-b04, mixed mode)  (at
>>>>>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192)
>>>>>> * Toolchain:      gcc (GNU Compiler Collection)
>>>>>> * C Compiler:     Version 4.6 (at
>>>>>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolc
>>>>>> h
>>>>>> ains/android-arm-toolchain/bin/arm-linux-androideabi-gcc)
>>>>>> * C++ Compiler:   Version 4.6 (at
>>>>>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10b/generated-toolc
>>>>>> h
>>>>>> ains/android-arm-toolchain/bin/arm-linux-androideabi-g++)
>>>>>>
>>>>>> make images:
>>>>>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/share/vm
>>>>>> /
>>>>>> ut
>>>>>> ilities/globalDefinitions_gcc.hpp:79:22: fatal error: ucontext.h:
>>>>>> No such file or directory compilation terminated.
>>>>>>
>>>>>>
>>>>>> android-ndk-r10e
>>>>>> -------------------------------------------------------------------
>>>>>> -
>>>>>> -- 
>>>>>> ----
>>>>>> configure:
>>>>>> Configuration summary:
>>>>>> * Debug level:    release
>>>>>> * HS debug level: product
>>>>>> * JDK variant:    normal
>>>>>> * JVM variants:   zero
>>>>>> * OpenJDK target: OS: android, CPU architecture: arm, address 
>>>>>> length:
>>>>>> 32
>>>>>> * Version string: 9-internal+0-adhoc.zhangfan.mobile-jdk9
>>>>>> (9-internal)
>>>>>>
>>>>>> Tools summary:
>>>>>> * Boot JDK:       java version "1.8.0_192-ea" Java(TM) SE Runtime
>>>>>> Environment (build 1.8.0_192-ea-b04) Java HotSpot(TM) 64-Bit Server
>>>>>> VM (build 25.192-b04, mixed mode)  (at
>>>>>> /home/zhangfan/tools/openjdk-builds/jdk1.8.0_192)
>>>>>> * Toolchain:      gcc (GNU Compiler Collection)
>>>>>> * C Compiler:     Version 4.8 (at
>>>>>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10e/generated-toolc
>>>>>> h
>>>>>> ains/android-arm-toolchain/bin/arm-linux-androideabi-gcc)
>>>>>> * C++ Compiler:   Version 4.8 (at
>>>>>> /home/zhangfan/code/dev/jdk9mobile/android-ndk-r10e/generated-toolc
>>>>>> h
>>>>>> ains/android-arm-toolchain/bin/arm-linux-androideabi-g++)
>>>>>>
>>>>>> make images:
>>>>>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/os/linux/vm/perfMemory_linux.cpp: 
>>>>>>
>>>>>> In function 'char* get_user_name(uid_t)':
>>>>>> /home/zhangfan/code/dev/jdk9mobile/mobile-jdk9/hotspot/src/os/linux/vm/perfMemory_linux.cpp:458:66: 
>>>>>>
>>>>>> error: 'getpwuid_r' was not declared in this scope
>>>>>>        int result = getpwuid_r(uid, &pwent, pwbuf, (size_t)bufsize,
>>>>>> &p);
>>>>>>
>>>>>> Best Regards,
>>>>>> Guoge
>