[CMake] Compile all .c source files with the CXX compiler

[Alexandre Feblot]

Hi,

 

In my project, all sources named .c are C++ files, and should be
considered as CXX language files.

 

I tried to set this with CMAKE_<LANG>_SOURCE_FILE_EXTENSIONS, at the
very beginning of my project, without success. How should I do it?

 

cmake_minimum_required (VERSION 2.6) 

project(MY_PROJECT)

# Can't changes the following values before calling project(), which
reset them to default values.

list(REMOVE_ITEM CMAKE_C_SOURCE_FILE_EXTENSIONS c)

list(APPEND    CMAKE_CXX_SOURCE_FILE_EXTENSIONS c)

#  value: CMAKE_C_SOURCE_FILE_EXTENSIONS: 

#  value: CMAKE_CXX_SOURCE_FILE_EXTENSIONS: C;M;c++;cc;cpp;cxx;m;mm;c

 

But later on, my .c files are still considered as C files, as shown
with:

 

get_source_file_property(lang source_file.c LANGUAGE)

#value: lang: C

 

 

 

Thanks

 

Alexandre



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