Re: [Mingw-w64-public] building gcc

[JonY <jo...@us...>]

On 7/3/2011 12:10, Bj Raz wrote:
> I've been working on cross compiler for building w64 binaries. I just
> wanted to see if I could do it :P
> I'm following the directions from Linux From Scratch (modifying them as needed).
> So I've built gcc with c++ support and I have the errors:
> 

See mingw-w64-docs for help on building. A lot of LFS doesn't apply to
mingw-w64.

> /tools/x86_64-w64-mingw32/bin/ld cannot find dllcrt2.o: No such file
> or directory
> /tools/x86_64-w64-mingw32/bin/ld cannot find crtbegin.o: No such file
> or directory
> /tools/x86_64-w64-mingw32/bin/ld cannot find crtend.o: No such file or directory
> collect2: ld returned 1 exit status
> make[2]: *** [libgcc_s.dll] Error 1
> make[1]: *** [all-target-libgcc] Error 2
> make: *** [all] Error 2
> can someone please either send me to the right list, or tell me what I
> should do.
> 

You are missing the CRT, see mingw-w64-crt.

> my configure options are as follows:
> 
> libtool --finish /tools/libexec/gcc/x86_64-w64-mingw32/x.x.x/
> AR=x86_64-w64-mingw32-ar RANLIB=x86_64-w64-mingw32-ranlib \
> ../gcc-4.5.1/configure --prefix=/tools \
> --with-local-prefix=/tools --enable-clocale=gnu \
> --enable-shared --enable-threads=posix \
> --enable-__cxa_atexit --enable-languages=c,c++ \
> --disable-libstdcxx-pch --disable-multilib \
> --disable-bootstrap --disable-libgomp \
> --without-ppl --without-cloog --build=x86_64-suse-linux-gnu
> --host=x86_64-suse-linux-gnu --target=x86_64-w64-mingw32
> 

You'd run into problems setting AR and RANLIB like that, let autotools
do its job.

Posix thread isn't for the faint hearted, you need to bootstrap
winpthread dll with libgcc, but DLLs can't be built without libgcc. I
suggest you remove --enable-threads=posix unless you have some special
needs, let gcc use the more tested win32 threads.

You are also missing essential options like
--enable-fully-dynamic-strings and --enable-sjlj-exceptions, you are
likely to break ABI from the auto builds. Finally, remove
--enable-__cxa_atexit, it will only work for glibc based hosts as far as
I know.