[Mesa-dev] Building under Windows

[Jose Fonseca]

I use MinGW cross compilation exclusively, so never run into this issue.

However, I use scons w/ MSVC and this nevers happens, because scons passes options to MS lib/link via a option file.

GNU ar too, supports this, so it is probably just a matter of teaching scons to use option files to GNU ar too.

Jose


----- Original Message -----
> I am trying to build with LLVM under windows. Using SCons and MinGW.
> After solving some basic problems with llvm-config and applying the
> patches for 8.0.3 most things are going OK.
> 
> Until it is time to generate the libgallium.a library. The "ar"
> command
> to build this library is over 10kBytes long, and windows has a hard
> limit of 8kB for commands in the terminal window.
> 
> So the build halts with "command line too long".
> 
> I can manually edit the command and replace a lot of specific
> build/windows-x86/gallium/auxiliary/xxx/yyy.o filenames with *.o
> wildcards, which makes the command much shorter, run it manually, and
> then it works. This doesn't help me however, since SCons doesn't like
> the manually generated libgallium.a file, and deletes it and tries to
> build a new one, which then fails.
> 
> Any ideas how I can get passed this and have the build continue? I
> just
> want to build a working llvmpipe driver for a performance test.
> /jesper
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