[CMake] VC7.1 project files and /TP

[Torsten Martinsen]

Hi,
 
I have a library that contains both C++ and C files. For various
reasons, the C files must be compiled as C++. In my CMakeLists.txt file
I have

	IF(OPT_DEST_VISUALSTUDIO)
	   ADD_DEFINITIONS(-TP)
	ENDIF(OPT_DEST_VISUALSTUDIO)
 
This works fine for "NMake Makefiles" output, but for "Visual Studio 7
.NET 2003" the C files are always compiled with /TP (and in the project
file, "Compile As" is set to "Compile as C Code (/TC)". Looking at
cmLocalVisualStudio7Generator.cxx, it looks as if this is indeed
hardcoded:

    if(strcmp(linkLanguage, "C") == 0)
    {
        flags += " /TC ";
    }
    if(strcmp(linkLanguage, "CXX") == 0)
    {
        flags += " /TP ";
    }

I have also tried

	SET_SOURCE_FILES_PROPERTIES(
	   ${C_SOURCE}
	   PROPERTIES COMPILE_FLAGS "-TP")

with the same (lack of) result. Any ideas?

-Torsten

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