[OS] Small patch for cross-compiling

[Tony Kelman]

Hi all,

I've attached a small patch that I'd appreciate someone taking a look at and 
committing if you agree. There's a check in OS/configure.ac that sets the 
WIN_ or MACOSX_ defines for either Windows or Mac respectively. At the 
moment this check is based on $build, but that is actually incorrect for 
cross-compiling. It should use $host.

I'm setting up cross-compilation of OS and almost all of its dependencies 
(the only ones I haven't done yet are DyLP, Vol, SYMPHONY, and Bcp - if 
someone asks I could do those too) using the openSUSE build service here: 
https://build.opensuse.org/project/show/home:kelman:mingw-coinor

These are cross-compiling from Linux to create Windows DLL's and EXE's using 
the MinGW-w64 compilers. Everything up to Cbc has already been submitted at 
https://build.opensuse.org/project/show/windows:mingw:win64 and we've been 
using these binaries for Windows installation of the Cbc wrapper package in 
Julia. I'm splitting up each subcomponent and building them independently, 
so this doesn't give you one monolithic installer like CoinAll does. There's 
a package in Julia designed to conveniently install these cross-compiled 
rpm's along with their dependencies. I've seen a Python script that can do 
the same thing, and I've started writing equivalent scripts in PowerShell 
and bash but those aren't completely done.

Anyway, I'll send a separate email shortly with an unrelated technical 
question / potential patch to a different part of the code.

Thanks,
Tony
-------------- next part --------------
A non-text attachment was scrubbed...
Name: os-crosscompile.patch
Type: application/octet-stream
Size: 733 bytes
Desc: not available
URL: <http://list.coin-or.org/pipermail/os/attachments/20150121/3dccfaf6/attachment.obj>