[CMake] Using C++ compilers for C source files?

[Nadir SOUALEM]

Nadir SOUALEM wrote:
> Robert Blake wrote:
>> I'm converting a large mixed C++/C cmake application to C++.  The 
>> project has many ".c" files that I would like to compile with the C++ 
>> compiler instead of the C compiler.  Does anyone know the proper way 
>> to do this in CMake?
>>
>> Things I've tried:
>> 1.) Changing CMAKE_C_COMPILER myself: Usually CMake doesn't let you 
>> change CMAKE_C_COMPILER, but there are ways around that.  This way 
>> feels like a hack.  The output while compiling still says "Compiling 
>> C".  In addition, forcing CMAKE_*_COMPILER to change makes it very 
>> difficult to run plane cmake on Unix machines where curses is not 
>> installed.
>>
>> 2.) Tell CMake that ".c" files are in the CXX language:  I've tried
>> PROJECT(Blah CXX)
>> list(APPEND CMAKE_CXX_SOURCE_FILE_EXTENSIONS c)
>>
>> When I run CMake on my project with these changes, I get errors like:
>>
>> CMake Error: Cannot determine link language for target "foobar"
>>
>> ...for all my targets that depend only on .c files.
>>
>> Help!
>> Rob
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>
> Try
>
> SET_SOURCE_FILES_PROPERTIES( file1.c file2.c PROPERTIES LANGUAGE CXX )
>
>
For sure !!! CXX not C !!! :-)

-- 
Nadir SOUALEM
Ingénieur INRIA - Équipe SAGE