It has been reported before. Don't know if it has been fixed or not. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66014 On Wed, Aug 25, 2021 at 11:32 AM bootmgr--- via Gcc-help < gcc-help@xxxxxxxxxxx> wrote: > Hello, > I am trying to comile GCC 11.2.0 on msys2 (gcc version 10.3), but when > compiling liblto_plugin.dll in stage 3, it says "undefined reference to > `stpcpy'". > > > This GCC configured by ../gcc-11.2.0/configure --disable-multilib > --disable-nls --disable-rpath --disable-symvers --disable-win32-registry > --enable-languages=c,c++,lto --enable-mingw-wildcard --enable-threads=posix > --enable-libgomp --disable-libstdcxx-verbose --enable-fully-dynamic-string > --with-build-config=bootstrap-lto-lean --with-system-zlib > > > Error Message: > /bin/sh ./libtool --tag=CC --tag=disable-static --mode=link > /h/build-gcc/./prev-gcc/xgcc -B/h/build-gcc/./prev-gcc/ > -B/mingw64/x86_64-w64-mingw32/bin/ -L/mingw64/x86_64-w64-mingw32/lib > -L/mingw64/lib -isystem /mingw64/x86_64-w64-mingw32/include -isystem > /mingw64/include -B/mingw64/x86_64-w64-mingw32/bin/ > -B/mingw64/x86_64-w64-mingw32/lib/ -isystem > /mingw64/x86_64-w64-mingw32/include -isystem > /mingw64/x86_64-w64-mingw32/sys-include -fchecking=1 -Wall -g -O2 > -D__USE_MINGW_ACCESS -Wno-pedantic-ms-format -fchecking=1 -flto=jobserver > -Wc,-static-libgcc -no-undefined -bindir "/mingw64/bin" -module > -avoid-version -bindir /mingw64/libexec/gcc/x86_64-w64-mingw32/11.2.0 > -Wc,../libiberty/libiberty.a -Xcompiler '-static-libstdc++' -Xcompiler > '-static-libgcc' '-Wl,--stack,12582912' -o liblto_plugin.la -rpath > /mingw64/libexec/gcc/x86_64-w64-mingw32/11.2.0 lto-plugin.lo > libtool: link: rm -fr .libs/liblto_plugin.dll.a > libtool: link: /h/build-gcc/./prev-gcc/xgcc -B/h/build-gcc/./prev-gcc/ > -B/mingw64/x86_64-w64-mingw32/bin/ -L/mingw64/x86_64-w64-mingw32/lib > -L/mingw64/lib -isystem /mingw64/x86_64-w64-mingw32/include -isystem > /mingw64/include -B/mingw64/x86_64-w64-mingw32/bin/ > -B/mingw64/x86_64-w64-mingw32/lib/ -isystem > /mingw64/x86_64-w64-mingw32/include -isystem > /mingw64/x86_64-w64-mingw32/sys-include -fchecking=1 -shared > .libs/lto-plugin.o -L/mingw64/x86_64-w64-mingw32/lib -L/mingw64/lib > -static-libgcc ../libiberty/libiberty.a -static-libstdc++ -static-libgcc > -Wl,--stack -Wl,12582912 -o .libs/liblto_plugin.dll > -Wl,--enable-auto-image-base -Xlinker --out-implib -Xlinker > .libs/liblto_plugin.dll.a > D:\msys64\mingw64\x86_64-w64-mingw32\bin\ld.exe: > C:\Users\Administrator\AppData\Local\Temp\ccjN6XVa.ltrans0.ltrans.o:<artificial>:(.text+0x5208): > undefined reference to `stpcpy' > collect2.exe: error: ld returned 1 exit status > make[4]: *** [Makefile:465: liblto_plugin.la] Error 1 > make[4]: Leaving directory '/h/build-gcc/lto-plugin' > make[3]: *** [Makefile:376: all] Error 2 > make[3]: Leaving directory '/h/build-gcc/lto-plugin' > make[2]: *** [Makefile:15247: all-stage3-lto-plugin] Error 2 > make[2]: Leaving directory '/h/build-gcc' > make[1]: *** [Makefile:23519: stage3-bubble] Error 2 > make[1]: Leaving directory '/h/build-gcc' > make: *** [Makefile:1013: all] Error 2 > How can I solve this problem? > Thanks.