Cross-compiling with winelib

[Eric Frias]

We're working on setting up an environment to cross-compile a winelib 
application (initially from x86 linux to sparc solaris).  To do this, we 
need a cross-compiling version of winebuild which will generate the 
assembly code for the target architecture instead of the build architecture.

I see two basic ways we can accomplish this.  We could either use 
autoconf's --target flag to specify the target architecture, and then 
replace all of the "#ifdef __sparc__" statements in winebuild with 
"#ifdef __target_arch_sparc".  I came across an autoconf macro 
(http://autoconf-archive.cryp.to/ac_create_target_h.html) that would 
generate the appropriate defines.

The other way we could approach the problem is to modify winebuild to 
always generate assembly code for all of the architectures, pushing the 
#ifdefs down into the .spec.c file.

I'm inclined to stick with the first option, since it looks like less 
work and less chance of introducing errors, but I wanted to run it by 
the list before starting work.  Would a patch like this be accepted into 
wine?  Do you know of any other gotchas we should be aware of?

Thanks,
Eric