fastdebug_build triggers -Werror with g++ 4.3.1-9 (Debian)

[Kelly O'Hair]

If you set the variable WARNINGS_ARE_ERRORS to be empty, it should
be sent through to all the makefiles. It's the variable
WARNINGS_ARE_ERRORS that contains the option "-Werror".

So try:

    make WARNINGS_ARE_ERRORS=

Not using -Werror will likely let more warning errors creep into the
builds, and using it means a few people get annoyed.

And the changeset below probably has nothing to do with it, must be
an earlier changeset.

-kto

Florian Weimer wrote:
> g++ -DLINUX -D_GNU_SOURCE -DAMD64 -DASSERT -DFASTDEBUG -I. -I../generated/adfiles -I../generated/jvmtifiles -I/home/fw/src/java/jdk7/hotspot/src/share/vm/asm -I/home/fw/src/java/jdk7/hotspot/src/share/vm/ci -I/home/fw/src/java/jdk7/hotspot/src/share/vm/classfile -I/home/fw/src/java/jdk7/hotspot/src/share/vm/code -I/home/fw/src/java/jdk7/hotspot/src/share/vm/compiler -I/home/fw/src/java/jdk7/hotspot/src/share/vm/gc_implementation -I/home/fw/src/java/jdk7/hotspot/src/share/vm/gc_implementation/parNew -I/home/fw/src/java/jdk7/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep -I/home/fw/src/java/jdk7/hotspot/src/share/vm/gc_implementation/shared -I/home/fw/src/java/jdk7/hotspot/src/share/vm/gc_implementation/parallelScavenge -I/home/fw/src/java/jdk7/hotspot/src/share/vm/gc_interface -I/home/fw/src/java/jdk7/hotspot/src/share/vm/interpreter -I/home/fw/src/java/jdk7/hotspot/src/share/vm/libadt -I/home/fw/src/java/jdk7/hotspot/src/share/vm/memory -I/home/fw/src/java/jdk7/
hotspot/src/share/vm/oops -I/home/fw/src/java/jdk7/hotspot/src/share/vm/opto -I/home/fw/src/java/jdk7/hotspot/src/share/vm/prims -I/home/fw/src/java/jdk7/hotspot/src/share/vm/runtime -I/home/fw/src/java/jdk7/hotspot/src/share/vm/services -I/home/fw/src/java/jdk7/hotspot/src/share/vm/utilities -I/home/fw/src/java/jdk7/hotspot/src/cpu/x86/vm -I/home/fw/src/java/jdk7/hotspot/src/os/linux/vm -I/home/fw/src/java/jdk7/hotspot/src/os_cpu/linux_x86/vm -I../generated -DHOTSPOT_RELEASE_VERSION="\"14.0-b01\"" -DHOTSPOT_BUILD_TARGET="\"fastdebug\"" -DHOTSPOT_BUILD_USER="\"fw\"" -DHOTSPOT_LIB_ARCH=\"amd64\" -DJRE_RELEASE_VERSION="\"1.7.0-internal-fastdebug-fw_2008_08_27_11_45-b00\"" -DHOTSPOT_VM_DISTRO="\"OpenJDK\"" -DCOMPILER2 -fPIC -fno-rtti -fno-exceptions -D_REENTRANT -fcheck-new -m64 -pipe -O3 -fno-strict-aliasing -DVM_LITTLE_ENDIAN -D_LP64=1 -fno-omit-frame-pointer -Werror -Wpointer-arith -Wsign-compare    -c -o ciMethodBlocks.o /home/fw/src/java/jdk7/hotspot/src/share/vm/ci/ciMetho
dBlocks.cpp
> cc1plus: warnings being treated as errors
> /home/fw/src/java/jdk7/hotspot/src/share/vm/ci/ciMethodBlocks.cpp:362: error: deprecated conversion from string constant to ‘char*’
> 
> It's inside #ifndef PRODUCT, that's why it hasn't been caught before.
> 
> This happens with this tip:
> 
> changeset:   241:5b3b8a69f10f
> tag:         tip
> user:        xdono
> date:        Thu Aug 14 09:26:23 2008 -0700
> summary:     Added tag jdk7-b33 for changeset 585535ec8a14
> 
> 
> To be honest, I think -Werror should be disabled except for test builds
> (with well-defined compilers).  For downstream consumers, -Werror only
> adds additional hassle.