MinGW-w64: add win64 cross-compiler

[sam.halliday@…]

the MingW cross-compiler for windows is quite old and there is currently no cross-compiler for Windows 64. Packages for both would be fantastic!

​http://mingw-w64.sourceforge.net/

Upstream build instructions:

• ​http://sourceforge.net/p/mingw-w64/wiki2/Cross%20Win32%20and%20Win64%20compiler/
• ​https://github.com/mirror/mingw-w64/blob/master/mingw-w64-doc/howto-build/mingw-w64-howto-build-adv.txt

Scripts to build MinGW-w64 from scratch:

• ​http://cgit.notk.org/adrien/yypkg/slackware64-current.git/tree/d/binutils/binutils.SlackBuild
• ​http://cgit.notk.org/adrien/yypkg/slackware64-current.git/tree/d/gcc/gcc.SlackBuild

Instructions about building a cross toolchain:

• ​Compiling MinGW-w64 with multilib on Linux
• ​Design of a cross-toolchain "From Scratch" (for arm)

Initial drafts can be found under users/mojca/ports/cross).

Ports

The ports have to be compiled in the following order:

• {i686,x86_64}-w64-mingw32-binutils (DONE)
  • (no dependencies)
• {i686,x86_64}-w64-mingw32-headers (DONE)
  • (no dependencies)
• gmp, mpfr, libmpc (native ports already packaged by MacPorts)
• cloog, ppl (might be worth looking into)
• {i686,x86_64}-w64-mingw32-gcc (possibly rename)
  • gcc compiler
  • dependencies:
    • {i686,x86_64}-w64-mingw32-binutils
    • {i686,x86_64}-w64-mingw32-headers
    • {i686,x86_64}-w64-mingw32-gcc
    • gmp, mpfr, libmpc
    • libiconv, zlib
  • the first stage compiles (this is a standalone gcc, it won't actually be able to link executables, but it is already suitable to compile the CRT)
• {i686,x86_64}-w64-mingw32-crt (DONE)
  • dependencies:
    • {i686,x86_64}-w64-mingw32-binutils
    • {i686,x86_64}-w64-mingw32-headers
    • {i686,x86_64}-w64-mingw32-gcc (either first stage or any later stage)
  • make sure that all the file are where expected
• {i686,x86_64}-w64-mingw32-libgcc
  • same sources as the gcc compiler; only a different target (make all-target-libgcc && make install-target-libgcc)
  • when a compiler already exists, one could build both gcc and libgcc at the same time
  • files provided by the gcc port should be removed
  • dependencies:
    • {i686,x86_64}-w64-mingw32-crt
    • {i686,x86_64}-w64-mingw32-gcc (either first stage or any later stage)
• pthreads-win32
  • dependencies:
    • {i686,x86_64}-w64-mingw32-libgcc (or full compiler)
• {i686,x86_64}-w64-mingw32-all(?) (second stage of gcc compiler)
  • same sources as the gcc compiler; only a different target (make && make install)
  • dependencies:
    • pthreads-win32
    • {i686,x86_64}-w64-mingw32-libgcc

Things to do

• fix layout of individual packages (folders where files are installed)

Further challenges

• on top of C and C++ also support Ada, Fortran, ObjC, ObjC++ (--enable-languages=c,c++,objc,obj-c++,ada,fortran)
• support clang
• figure out where stdlibc++ should be located on Windows (is it possible to build it statically?)

[sam.halliday@…]

this should be against i386-mingw32-gcc (but I can't seem to change that anymore)

[cooljeanius (Eric Gallager)]

As far as the "being quite old" part, that's #31578... as for the x86_64 support part, I think I've seen a ticket for that, too, but I'm still looking for that...

[mf2k (Frank Schima)]

in the future, please Cc the port maintainers (port info --maintainers).

[sam.halliday@…]

workaround is to download the mingw64 binaries for i686-darwin from sourceforge.

[mojca (Mojca Miklavec)]

Cc Me!

[mojca (Mojca Miklavec)]

I started playing with mingw-w64 (you can check users/mojca/ports/cross), but these are still very basic attempts to get something working. I'm still learning.

[hippallium-macports@…]

Cc Me!