[CMake] cmake and MinGW - resolution

[Donald Robinson]

Thanks to Bill Hoffmann and Alan Irwin for helping work through this MinGW
problem. As it turns out, the problem in my CMakeLists.txt file wasn't the
residual presence of a CMakeFiles directory or a CMakeCache.txt file, or the
command-line, which is correctly:

 

   Cmake -G "MinGW Makefiles"

 

Mea culpa. The source of the problem was due to the fact that the my parent
CMakeLists.txt file dynamically creates and then processes a set of child
CMakeLists.txt files. After creating them, those files (each in a
subdirectory) are run using the following loop in the parent file:

 

   foreach(toProcess ${dirsToProcess})

    execute_process(COMMAND cmake CMakeLists.txt WORKING_DIRECTORY
${toProcess})

   endforeach(toProcess)

 

Although the parent was happily running with the MinGW flags, these child
processes were not. I should have noticed this immediately. The solution is
to embed the MinGW flag within that loop. Doing that, the build proceeds
normally.

 

   foreach(toProcess ${dirsToProcess})

     execute_process(COMMAND cmake -G "MinGW Makefiles" CMakeLists.txt
WORKING_DIRECTORY ${toProcess})

   endforeach(toProcess)

 

The general solution will be to build this out a bit more for different
platforms.

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