Cross compiling Openjdk 8 for ARM, can't locate compiler

[Stuart Monteith]

Hello Bruno,
   I've not tried cross-compiling Java, so I don't have anything that
will help you. Your best chance for help is on the aarch32-port-dev
mailing list.

BR,
   Stuart


On 29 March 2017 at 21:23, Bruno Kremel <bruno.kremel at gmail.com> wrote:
> Hi All,
>
> As I was not able to compile OpenJDK 9 (there is disscussion in other
> mailing list). I tried to compile OpenJDK 8 precisely changeset 152-b02.
>
> I configure this way:
>
> ./configure --with-jvm-interpreter=cpp \
> --with-jvm-variants=zero --enable-openjdk-only \
> --with-freetype-include=~/linux/buildroot-openjdk8/output/host/usr/arm-buildroot-linux-gnueabi/sysroot/usr/include/freetype2\
> --with-freetype-lib=~/linux/buildroot-openjdk8/output/host/usr/arm-buildroot-linux-gnueabi/sysroot/usr/lib\
> --with-freetype=~/linux/buildroot-openjdk8/output/host/usr/arm-buildroot-linux-gnueabi/sysroot/usr/\
> --with-debug-level=release --openjdk-target=arm-buildroot-linux-gnueabi \
> --with-sys-root=~/linux/buildroot-openjdk8/output/host/usr/arm-buildroot-linux-gnueabi/sysroot\
> --with-tools-dir=~/linux/buildroot-openjdk8/output/host \
> --disable-freetype-bundling --enable-unlimited-crypto --disable-headful\
> OBJCOPY=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-objcopy
> STRIP=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-strip
> CPP_FLAGS=-lstdc++ CXX_FLAGS=-lstdc++
> CPP=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-cpp\
> CXX=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-g++\
> CC=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc\
> LD=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc\
> BUILD_CPP=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-cpp\
> BUILD_CXX=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-g++\
> BUILD_CC=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc\
> BUILD_LD=~/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc
>
> The configure script seems to have some bug that it can't locate the
> compiler properly:
>
> ...
> checking for cl... /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc
> configure: Resolving BUILD_CC (as /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc) faile
> d, using /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc directly.
> checking for cl... /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-g++
> configure: Resolving BUILD_CXX (as /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-g++) fail
> ed, using /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-g++ directly.
> checking for ld... /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc
> configure: Resolving BUILD_LD (as /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc) faile
> d, using /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc directly.
> checking for /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc... no
> checking for /home/bruno/linux/buildroot-openjdk8/output/host/usr/bin/arm-linux-gnueabi-gcc... no
> configure: error: Could not find a C compiler. You might be able to fix this by running 'sudo apt-get install build-ess
> ential'.
> configure exiting with result code 1
> ...
>
> Those files that it claims "no" do exist and they are indeed a GCC crosscompiler.
> The same parameters work for OpenJDK 9 (it does find the compiler).
>
> How can I resolve this issue?
>
> Thanks
> Bruno Kremel
>