Hi,
I have successfully built gcc-4.8.*/4.9.* as MinGW-w64 with
--enable-threads=win32 but I can't build gcc-5.* with the same options.
Error occurs when building libatomic on stage 3.
If I change the '--enable-threads=win32' option on
'--enable-threads=posix' then it builds successfully.
configure: error: in
`/c/mingw520/i686-520-win32-sjlj-rt_v4-rev0/build/gcc-5.2.0/i686-w64-mingw32/64/libatomic':
configure: error: C compiler cannot create executables
See `config.log' for more details.
libatomic/config.log:
configure:3566: checking for C compiler default output file name
configure:3588:
/c/mingw520/i686-520-win32-sjlj-rt_v4-rev0/build/gcc-5.2.0/./gcc/xgcc
-B/c/mingw520/i686-520-win32-sjlj-rt_v4-rev0/build/gcc-5.2.0/./gcc/
-L/mingw32/i686-w64-mingw32/lib -L/mingw32/mingw/lib -isystem
/mingw32/i686-w64-mingw32/include -isystem /mingw32/mingw/include
-B/mingw32/i686-w64-mingw32/bin/ -B/mingw32/i686-w64-mingw32/lib/
-isystem /mingw32/i686-w64-mingw32/include -isystem
/mingw32/i686-w64-mingw32/sys-include -m64 -g -O2 -pipe
-I/c/mingw520/i686-520-win32-sjlj-rt_v4-rev0/mingw32/opt/include
-I/c/mingw520/prerequisites/i686-zlib-static/include
-I/c/mingw520/prerequisites/i686-w64-mingw32-static/include
-fno-sync-libcalls -march=i486 -mtune=i686 -fomit-frame-pointer
conftest.c >&5
conftest.c:1:0: error: CPU you selected does not support x86-64
instruction set
As you can see here are simultaneously used the '-m64 -march=i486
-mtune=i686' options.
Question is, why and how can I fix it?
Thanks.
