Jonathan Wakely <jwakely.gcc@xxxxxxxxx> 于2018年7月31日周二 下午4:37写道： > > On Tue, 31 Jul 2018 at 07:25, martin krastev <blu.dark@xxxxxxxxx> wrote: > > > > Hello, > > > > I'm trying to build gcc-7.3.0 (md5 747d5010b7c6938b480bc6e4d7c4be9a of > > tar.gz) natively on a MACHTYPE=mipsel-unknown-linux-gnu MIPS p5600 machine > > under Debian Stretch. I'm getting an illegal instruction during libstdc++ > > build phase: > > This mailing list is for discussion of GCC development, not help using > or building GCC. Your mail would be appropriate on the gcc-help list, > which I've CC'd. Please remove gcc@ from further replies and use the > gcc-help@ list. > > > libtool: compile: /home/gru/proj/gcc_build/./gcc/xgcc -shared-libgcc > > -B/home/gru/proj/gcc_build/./gcc -nostdinc++ > > -L/home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/src > > -L/home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/src/.libs > > -L/home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/libsupc++/.libs > > -B/usr/local/mipsel-linux-gnu/bin/ -B/usr/local/mipsel-linux-gnu/lib/ > > -isystem /usr/local/mipsel-linux-gnu/include -isystem > > /usr/local/mipsel-linux-gnu/sys-include > > -I/home/gru/proj/gcc-7.3.0/libstdc++-v3/../libgcc > > -I/home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/include/mipsel-linux-gnu > > -I/home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/include > > -I/home/gru/proj/gcc-7.3.0/libstdc++-v3/libsupc++ -D_GLIBCXX_SHARED > > -std=gnu++14 -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi > > -fdiagnostics-show-location=once -ffunction-sections -fdata-sections > > -frandom-seed=cow-ops.lo -g -O2 -D_GNU_SOURCE -minterlink-mips16 -c > > /home/gru/proj/gcc_build/../gcc-7.3.0/libstdc++-v3/src/filesystem/cow-ops.cc > > -fPIC -DPIC -D_GLIBCXX_SHARED -o cow-ops.o > > In file included from > > /home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/include/vector:64:0, > > from > > /home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/include/experimental/bits/fs_path.h:39, > > from > > /home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/include/experimental/filesystem:39, > > from > > /home/gru/proj/gcc_build/../gcc-7.3.0/libstdc++-v3/src/filesystem/dir.cc:29, > > from > > /home/gru/proj/gcc_build/../gcc-7.3.0/libstdc++-v3/src/filesystem/cow-dir.cc:26: > > /home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/include/bits/stl_vector.h: > > In member function 'void std::vector<_Tp, > > _Alloc>::_M_move_assign(std::vector<_Tp, _Alloc>&&, std::true_type) [with > > _Tp = std::experimental::filesystem::v1::path::_Cmpt; _Alloc = > > std::allocator<std::experimental::filesystem::v1::path::_Cmpt>]': > > /home/gru/proj/gcc_build/mipsel-linux-gnu/libstdc++-v3/include/bits/stl_vector.h:1531:9: > > internal compiler error: Illegal instruction > > vector __tmp(get_allocator()); > > ^~~~~ > > 0x159a473 crash_signal > > /home/gru/proj/gcc_build/../gcc-7.3.0/gcc/toplev.c:337 > > Please submit a full bug report, > > with preprocessed source if appropriate. > > Please include the complete backtrace with any bug report. > > See <https://gcc.gnu.org/bugs/> for instructions. > > Makefile:523: recipe for target 'cow-dir.lo' failed > > make[6]: *** [cow-dir.lo] Error 1 > > > > > > I have configured and launched the build as: > > > > $ CPATH=/usr/include/mipsel-linux-gnu/ > > LIBRARY_PATH=/usr/lib/mipsel-linux-gnu/ $PWD/../gcc-7.3.0/configure > > --enable-languages=c,c++ --with-float=hard --disable-multiarch > > --target=mipsel-linux-gnu > > $ CPATH=/usr/include/mipsel-linux-gnu > > LIBRARY_PATH=/usr/lib/mipsel-linux-gnu make -j2 > > > > I've clearly misconfigured the build -- xgcc ended up with a wrong ISA, but > > I can't figure out how. What am I missing? > Do you pass some option like march=p6500 etc or native? I guess the problem is about nan=2008 vs nan=legacy. > The most common reason for SIGILL is that one of the support libraries > (gmp, mpfr, or mpc) has been built with the wrong ISA. I wouldn't > expect that to fail on that line in libstdc++, but it's worth > checking. > > The simplest way to build those libraries for use with GCC is to put > their sources in the GCC source tree, as done by the > contrib/download_prerequisites script. See > https://gcc.gnu.org/wiki/InstallingGCC for more info. -- YunQiang Su
