Fix host-multilib builds

[rubenvb]

find "The Correct Way" TM to specify CC="gcc -m32" to all projects.

[rubenvb]

The idea that has the most chance of success is creating gcc/ld/ranlib/ar/etc... wrapper scripts that just call the tool with the right -m32 or -m64 or other architecture flag.

[net147]

See https://sourceforge.net/tracker/?func=detail&atid=974442&aid=3413576&group_id=200665. I have written a wrapper that does exactly this that you might find useful as a starting point.

[rubenvb]

Hmm... I agree with TDM. Shell wrapper scripts or CC/CXX should be a better way to handle this. I just haven't had the time to experiment with this timeconsuming bit :). And I build on Linux, so that would definitely be a no-go.

[net147]

The wrapper I did was mainly for compiling projects in 32-bit using multilib MinGW-w64 compiler on Windows because I was too lazy to fiddle around with the compile flags for every library/project I need to build. It may not be directly related to this issue actually... but it might be useful to some people on Windows.