[CMake] CHECK_FUNCTION_EXISTS question

[Mathieu Malaterre]

Hi there,

  If I understand correctly CHECK_FUNCTION_EXISTS is only checking
that the c symbol passed to the CHECK_FUNCTION_EXISTS macro can be
found by the linker, right ? I have a case where the symbol (namely
_snprintf) can be found, but the C declaration is not found in
cygwin-stdio.h (in which case I need to use snprintf declaration).

  Is this correct ? If so is there a way to detect if a function can
be found in a particular header ?

Thanks,
-- 
Mathieu