Re: [Mingw-w64-public] _FORTIFY_SOURCE and libtool

[ralph e. <ral...@gm...>]

i686-w64-mingw32-gcc -pipe -Wl,--dynamicbase,--nxcompat -s   -o python.exe \
                 Modules/python.o \
                 -L. -lpython2.7    -lm
./python.exe -E -S -m sysconfig --generate-posix-vars ;\
if test $? -ne 0 ; then \
         echo "generate-posix-vars failed" ; \
         rm -f ./pybuilddir.txt ; \
         exit 1 ; \
fi
/bin/sh: linje 6: 22707 Segmentation fault CC='i686-w64-mingw32-gcc' 
LDSHARED='i686-w64-mingw32-gcc -shared -Wl,--enable-auto-image-base 
-pipe -Wl,--dynamicbase,--nxcompat -s ' OPT='-DNDEBUG ' 
_TCLTK_INCLUDES='' _TCLTK_LIBS='' ./python.exe -E 
../Python-2.7.16/setup.py $quiet build
make: *** [Makefile:548: sharedmods] Error 139

this.

Den 17-09-2019 kl. 06:31 skrev Liu Hao:
> As GCC sets `-D_FORTIFY_SOURCE=2` (maybe it's MSYS2 or `makepkg` well I
> don't really care about which one it is), those `__*_chk()` functions
> are now required when building GCC and its libraries. Unfortunately,
> mingw-w64 does not provide these (it relies libssp to provide them), so
> the build now fails with undefined references.
>
> I tried adding `-fstack-protector` into `LDFLAGS` and adding `-lssp`
> into `LIBS` when configuring GCC, but neither worked for me. The build
> process errorred out when building either libiberty or libcpp.
>
> Tampering with GCC builtin specs may be a solution, but I am not sure
> whether libtool likes that. It ignores default libraries and always
> attempts to link against everything at its own disposal.
>
> I am not sure whether libssp is (rather, can be made) available when
> building libiberty. Or this _FORTIFY_SOURCE thing should be disabled
> when building GCC for mingw-w64.
>
> Any suggestions will be appreciated.
>
>
> Build logs:
>
> ```
> libtool: link:
> /e/GitHub/MINGW-packages/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/./prev-gcc/xgcc
> -B/e/GitHub/MINGW-packages/mingw-w64-gcc-git/src/build-x86_64-w64-mingw32/./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   -fno-checking -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-0.dll
> -Wl,--enable-auto-image-base -Xlinker --out-implib -Xlinker
> .libs/liblto_plugin.dll.a
> C:\MinGW\MSYS2\mingw64\x86_64-w64-mingw32\bin\ld.exe:
> ../libiberty/libiberty.a(simple-object-coff.o):simple-object-coff.c:(.text+0xb3a):
> undefined reference to `__memcpy_chk'
> C:\MinGW\MSYS2\mingw64\x86_64-w64-mingw32\bin\ld.exe:
> ../libiberty/libiberty.a(simple-object-mach-o.o):simple-object-mach-o.c:(.text+0xc91):
> undefined reference to `__strncpy_chk'
> C:\MinGW\MSYS2\mingw64\x86_64-w64-mingw32\bin\ld.exe:
> ../libiberty/libiberty.a(simple-object-xcoff.o):simple-object-xcoff.c:(.text+0x7b5):
> undefined reference to `__memcpy_chk'
> C:\MinGW\MSYS2\mingw64\x86_64-w64-mingw32\bin\ld.exe:
> ../libiberty/libiberty.a(xstrerror.o):xstrerror.c:(.text+0x4a):
> undefined reference to `__chk_fail'
>
> ```
>
>
>
>
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