#1351 cross compile-script adaptation for gcc 4.3/4.4

[Hin-Tak Leung]

I have not had any luck with cross-compiling gcc 4.3.x/4.4.x using the cross-script, but fedora 11 started shipping a gcc 4.4-based compiler in April anyway, so I haven't bothered with it much any more until this weekend. Anyway, I finally found the problem after some hours - it is an assumption which x86-mingw32-build.sh makes which is no-longer true in gcc 4.3 onwards: around line 108 for building and installing stage 1,
instead of this:
ALL_GCC="all-gcc" INSTALL_GCC=install-gcc

for gcc 4.3 onwards, libgcc is splitted out, and something like this is required:
ALL_GCC="all-gcc all-target-libgcc" INSTALL_GCC="install-gcc install-target-libgcc"
otherwise crtbegin.o and friends (part of libgcc) aren't built and installed and one gets into trouble during mingwrt building.

Hope this helps

[Keith Marshall]

Reopening.

This is probably still relevant for newer GCC too, and I may follow it up with a cross-scripts update, when I find a few round tuits.

[Keith Marshall]

I'm no longer maintaining the cross-scripts; they haven't really been useful, since GCC-3.4.5 fell out of favour. Furthermore, I didn't require this hack, for any of GCC-4.8.2, GCC-4.9.3, GCC-5.3.0, or GCC-6.3.0, so I guess it's no longer relevant.