[CMake] how to write a cmakelist to call a function in another c or cxx file

[Hendrik Sattler]

Am Samstag 16 Januar 2010 19:21:42 schrieb Yixun Liu:
> I do add test.c (see previous email).
> If I change test.c to test.cxx, it works. I do not know why.

Hint: C++ name mangling.

Add a test.h:
extern "C" {
  void func();
}

and include it in your main.cxx file.
Alternatively, set the LANGUAGE property of the test.c file to CXX, so that 
cmake knows that it must compile it with a C++ compiler.

HS