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Re: [libstdc++] Mis-configure _GLIBCXX_LONG_DOUBLE_COMPAT?
- From: Uros Bizjak <ubizjak at gmail dot com>
- To: Richard Henderson <rth at redhat dot com>
- Cc: libstdc++ at gcc dot gnu dot org, GCC Development <gcc at gcc dot gnu dot org>
- Date: Sun, 2 Sep 2012 00:37:13 +0200
- Subject: Re: [libstdc++] Mis-configure _GLIBCXX_LONG_DOUBLE_COMPAT?
Hello!
> I've seen this today both for alpha and s390 cross from x86_64:
> > libtool: compile: /home/rth/work/gcc/bld-s390/./gcc/xgcc -shared-libgcc -B/home/rth/work/gcc/bld-s390/./gcc -nostdinc++ -L/home/rth/work/gcc/bld-s390/s390x-linux/libstdc++-v3/src -L/home/rth/work/gcc/bld-s390/s390x-linux/libstdc++-v3/src/.libs -B/home/rth/work/gcc/run-cross/s390x-linux/bin/ -B/home/rth/work/gcc/run-cross/s390x-linux/lib/ -isystem /home/rth/work/gcc/run-cross/s390x-linux/include -isystem /home/rth/work/gcc/run-cross/s390x-linux/sys-include -I/home/rth/work/gcc/git-master/libstdc++-v3/../libgcc -I/home/rth/work/gcc/bld-s390/s390x-linux/libstdc++-v3/include/s390x-linux -I/home/rth/work/gcc/bld-s390/s390x-linux/libstdc++-v3/include -I/home/rth/work/gcc/git-master/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi -fdiagnostics-show-location=once -ffunction-sections -fdata-sections -frandom-seed=locale-inst.lo -g -O2 -D_GNU_SOURCE -c ../../../../../git-master/libstdc++-v3/src/c++98/locale-inst.cc -fPIC -DPIC -o loca!
le-inst.o
> > ../../../../../git-master/libstdc++-v3/src/c++98/locale-inst.cc:362:8: error: âvoid _ZNKSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE9_M_insertILb1EEES3_S3_RSt8ios_basecRKSs()â aliased to undefined symbol â_ZNKSt17__gnu_cxx_ldbl1289money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE9_M_insertILb1EEES4_S4_RSt8ios_basecRKSsâ
> > _ZNKSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE9_M_insertILb1EEES3_S3_RSt8ios_basecRKSs);
> > ^
> > ../../../../../git-master/libstdc++-v3/src/c++98/locale-inst.cc:329:19: note: in definition of macro '_GLIBCXX_LDBL_COMPAT'
> > extern "C" void ldbl (void) __attribute__ ((alias (#dbl), weak))
> > ^
>
> where, given that I've configured --with-long-double-128, appears to have
> mis-identified the correct setting of _GLIBCXX_LONG_DOUBLE_COMPAT.
>
> Is anyone else seeing this? Is this a problem for cross-compile only?
> Certainly editing config.h after the fact lets the build complete...
No, it also fails on native alphaev68-unknown-linux-gnu compile:
../../../../../gcc-svn/trunk/libstdc++-v3/src/c++98/locale-inst.cc:362:8:
error: ‘void _ZNKSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE9_M_insertILb1EEES3_S3_RSt8ios_basecRKSs()’
aliased to undefined symbol
‘_ZNKSt17__gnu_cxx_ldbl1289money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE9_M_insertILb1EEES4_S4_RSt8ios_basecRKSs’
_ZNKSt9money_putIcSt19ostreambuf_iteratorIcSt11char_traitsIcEEE9_M_insertILb1EEES3_S3_RSt8ios_basecRKSs);
^
../../../../../gcc-svn/trunk/libstdc++-v3/src/c++98/locale-inst.cc:329:19:
note: in definition of macro '_GLIBCXX_LDBL_COMPAT'
extern "C" void ldbl (void) __attribute__ ((alias (#dbl), weak))
... and many more ...
Uros.