[CMake] Two C Compilers

[David Cole]

On Friday, January 20, 2012, John David Duncan <john.duncan at oracle.com>
wrote:
> Hi,
>
> I'm looking at building a large project on Windows.  I am currently able
to build the whole project using CMake and Visual Studio.
>
> Now I'd like to add a "subproject" (or just a directory), but in this
particular subdirectory the C language files need to be compiled with mingw
(because of extensive use of C99).  I understand that, in theory, I should
be able to compile these with mingw into DLLs and then link with the rest
of the project.
>
> I'd still like to control the whole build with CMake, but I see at least
two potential problems.  One is that I can't override CMAKE_C_COMPILER, and
another is that in the subproject I may need CMake to use a Makefile
generator rather than a Visual Studio project generator.
>
> Does anyone know if there's a way to do this with CMake?
>
> Thanks,
>
> JD
>
>
>
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You could try building the C99 stuff using an ExternalProject_Add call.
Search around for examples of using that.

HTH,
David
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