Using gcc 4.6trunk r168215, target arm-unknown-eabi, newlib 1.19.0, binutils 2.21. Configured with: --target=arm-unknown-eabi --prefix=/home/joty/projects/gccsdk/riscos7/cross --with-gmp=/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/installed-libs-for-cross-gcc --with-mpfr=/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/installed-libs-for-cross-gcc --with-mpc=/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/installed-libs-for-cross-gcc --with-ppl=/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/installed-libs-for-cross-gcc --with-cloog=/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/installed-libs-for-cross-gcc --disable-threads --disable-multilib --disable-shared --with-newlib --enable-maintainer-mode --disable-werror --enable-interwork --disable-nls --disable-libquadmath --enable-checking=release --enable-languages=c,c++ Mind "--enable-maintainer-mode --disable-werror" being used. And this still results in a -Werror during libstdc++ building, which results into: --8<-- ln -s /home/joty/projects/gccsdk/gccsdk_svn7/gcc4/srcdir/gcc/libstdc++-v3/config/locale/generic/ctype_members.cc . || true /bin/bash ../libtool --tag CXX --mode=compile /home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/./gcc/xgcc -shared-libgcc -B/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/./gcc -nostdinc++ -L/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libstdc++-v3/src -L/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libstdc++-v3/src/.libs -nostdinc -B/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/newlib/ -isystem /home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/newlib/targ-include -isystem /home/joty/projects/gccsdk/gccsdk_svn7/gcc4/srcdir/gcc/newlib/libc/include -B/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libgloss/arm -L/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libgloss/libnosys -L/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/srcdir/gcc/libgloss/arm -B/home/joty/projects/gccsdk/riscos7/cross/arm-unknown-eabi/bin/ -B/home/joty/projects/gccsdk/riscos7/cross/arm-unknown-eabi/lib/ -isystem /home/joty/projects/gccsdk/riscos7/cross/arm-unknown-eabi/include -isystem /home/joty/projects/gccsdk/riscos7/cross/arm-unknown-eabi/sys-include -I/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libstdc++-v3/include/arm-unknown-eabi -I/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libstdc++-v3/include -I/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/srcdir/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Werror -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -g -O2 -c -o ctype_members.lo ctype_members.cc libtool: compile: /home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/./gcc/xgcc -shared-libgcc -B/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/./gcc -nostdinc++ -L/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libstdc++-v3/src -L/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libstdc++-v3/src/.libs -nostdinc -B/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/newlib/ -isystem /home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/newlib/targ-include -isystem /home/joty/projects/gccsdk/gccsdk_svn7/gcc4/srcdir/gcc/newlib/libc/include -B/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libgloss/arm -L/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libgloss/libnosys -L/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/srcdir/gcc/libgloss/arm -B/home/joty/projects/gccsdk/riscos7/cross/arm-unknown-eabi/bin/ -B/home/joty/projects/gccsdk/riscos7/cross/arm-unknown-eabi/lib/ -isystem /home/joty/projects/gccsdk/riscos7/cross/arm-unknown-eabi/include -isystem /home/joty/projects/gccsdk/riscos7/cross/arm-unknown-eabi/sys-include -I/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libstdc++-v3/include/arm-unknown-eabi -I/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/builddir/cross-gcc/arm-unknown-eabi/libstdc++-v3/include -I/home/joty/projects/gccsdk/gccsdk_svn7/gcc4/srcdir/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Werror -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -g -O2 -c ctype_members.cc -o ctype_members.o ctype_members.cc: In member function 'virtual char std::ctype<wchar_t>::do_narrow(wchar_t, char) const': ctype_members.cc:206:17: error: comparison of unsigned expression >= 0 is always true [-Werror=type-limits] ctype_members.cc: In member function 'virtual const wchar_t* std::ctype<wchar_t>::do_narrow(const wchar_t*, const wchar_t*, char, char*) const': ctype_members.cc:220:17: error: comparison of unsigned expression >= 0 is always true [-Werror=type-limits] cc1plus: all warnings being treated as errors --8<-- Removing --enable-maintainer-mode is of course a workaround but I expect that with a --disable-werror this should not result in -Werror being used at all.
Author: bkoz Date: Fri Feb 17 20:26:32 2012 New Revision: 184349 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184349 Log: 2012-02-17 Benjamin Kosnik <bkoz@redhat.com> PR libstdc++/47058 * acinclude.m4 (GLIBCXX_ENABLE_WERROR): New. (GLIBCXX_EXPORT_FLAGS): Add -Wabi to WARN_FLAGS * configure.ac: Use it. * fragment.am: Set WERROR_FLAG conditionally on --disable-werror. * configure: Regenerate. * python/Makefile.in: Same. * Makefile.in: Same. * doc/Makefile.in: Same. * include/Makefile.in: Same. * po/Makefile.in: Same. * python/Makefile.in: Same. * src/Makefile.in: Same. * src/c++11/Makefile.in: Same. * src/c++98/Makefile.in: Same. * testsuite/Makefile.in: Same. Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/Makefile.in trunk/libstdc++-v3/acinclude.m4 trunk/libstdc++-v3/configure trunk/libstdc++-v3/configure.ac trunk/libstdc++-v3/doc/Makefile.in trunk/libstdc++-v3/fragment.am trunk/libstdc++-v3/include/Makefile.in trunk/libstdc++-v3/libsupc++/Makefile.in trunk/libstdc++-v3/po/Makefile.in trunk/libstdc++-v3/python/Makefile.in trunk/libstdc++-v3/src/Makefile.in trunk/libstdc++-v3/src/c++11/Makefile.in trunk/libstdc++-v3/src/c++98/Makefile.in trunk/libstdc++-v3/testsuite/Makefile.in
Mine
Fixed in trunk. Now --disable-werror removes -Werror from the build warning flags, even in maintainer mode.