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libgomp forces -Werror even when top level configure --disable-werror
- From: Laurent GUERBY <laurent at guerby dot net>
- To: Richard Henderson <rth at redhat dot com>, Jakub Jelinek <jakub at redhat dot com>
- Cc: gcc <gcc at gcc dot gnu dot org>, Paolo Bonzini <bonzini at gnu dot org>
- Date: Thu, 19 Feb 2009 15:06:18 +0100
- Subject: libgomp forces -Werror even when top level configure --disable-werror
Hi,
Trunk bootstrap on powerpc64-linux (debian etch) fails on a warning
during libgomp build:
<<
if /bin/sh ./libtool --tag=CC --mode=compile /home/guerby/build-144268/./gcc/xgcc -B/home/guerby/build-144268/./gcc/ -B/n/41/guerby/install-trunk-144268/powerpc64-unknown-linux-gnu/bin/ -B/n/41/guerby/install-trunk-144268/powerpc64-unknown-linux-gnu/lib/ -isystem /n/41/guerby/install-trunk-144268/powerpc64-unknown-linux-gnu/include -isystem /n/41/guerby/install-trunk-144268/powerpc64-unknown-linux-gnu/sys-include -DHAVE_CONFIG_H -I. -I../../../../trunk/libgomp -I. -I../../../../trunk/libgomp/config/linux/powerpc -I../../../../trunk/libgomp/config/linux -I../../../../trunk/libgomp/config/posix -I../../../../trunk/libgomp -Wall -Werror -ftls-model=initial-exec -Wc,-pthread -g -O2 -m64 -fPIC -mstrict-align -MT proc.lo -MD -MP -MF ".deps/proc.Tpo" -c -o proc.lo ../../../../trunk/libgomp/config/linux/proc.c; \
then mv -f ".deps/proc.Tpo" ".deps/proc.Plo"; else rm -f ".deps/proc.Tpo"; exit 1; fi
libtool: compile: /home/guerby/build-144268/./gcc/xgcc -B/home/guerby/build-144268/./gcc/ -B/n/41/guerby/install-trunk-144268/powerpc64-unknown-linux-gnu/bin/ -B/n/41/guerby/install-trunk-144268/powerpc64-unknown-linux-gnu/lib/ -isystem /n/41/guerby/install-trunk-144268/powerpc64-unknown-linux-gnu/include -isystem /n/41/guerby/install-trunk-144268/powerpc64-unknown-linux-gnu/sys-include -DHAVE_CONFIG_H -I. -I../../../../trunk/libgomp -I. -I../../../../trunk/libgomp/config/linux/powerpc -I../../../../trunk/libgomp/config/linux -I../../../../trunk/libgomp/config/posix -I../../../../trunk/libgomp -Wall -Werror -pthread -ftls-model=initial-exec -g -O2 -m64 -fPIC -mstrict-align -MT proc.lo -MD -MP -MF .deps/proc.Tpo -c ../../../../trunk/libgomp/config/linux/proc.c -fPIC -DPIC -o .libs/proc.o
cc1: warnings being treated as errors
../../../../trunk/libgomp/config/linux/proc.c: In function 'gomp_init_num_threads':
../../../../trunk/libgomp/config/linux/proc.c:78: error: implicit declaration of function 'pthread_getaffinity_np'
make[8]: *** [proc.lo] Error 1
make[8]: Leaving directory `/home/guerby/build-144268/powerpc64-unknown-linux-gnu/64/libgomp'
make[7]: *** [all-recursive] Error 1
make[7]: Leaving directory `/home/guerby/build-144268/powerpc64-unknown-linux-gnu/64/libgomp'
make[6]: *** [all] Error 2
make[6]: Leaving directory `/home/guerby/build-144268/powerpc64-unknown-linux-gnu/64/libgomp'
make[5]: *** [multi-do] Error 1
make[5]: Leaving directory `/home/guerby/build-144268/powerpc64-unknown-linux-gnu/libgomp'
make[4]: *** [all-multi] Error 2
make[4]: Leaving directory `/home/guerby/build-144268/powerpc64-unknown-linux-gnu/libgomp'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/home/guerby/build-144268/powerpc64-unknown-linux-gnu/libgomp'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/home/guerby/build-144268/powerpc64-unknown-linux-gnu/libgomp'
make[1]: *** [all-target-libgomp] Error 2
make[1]: Leaving directory `/home/guerby/build-144268'
make: *** [bootstrap] Error 2
>>
Note: this was reported on another platform as http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32193
libgomp/configure.ac has:
# Add -Wall -Werror if we are using GCC.
if test "x$GCC" = "xyes"; then
XCFLAGS="$XCFLAGS -Wall -Werror"
fi
I had to remove this part to be able to bootstrap. Now may be it's a bug
in debian etch libc headers but it would be nice to honor
--disable-werror in libgomp.
Thanks in advance,
Laurent