CheckFunctionExists
: macro which checks if the function existsCHECK_FUNCTION_EXISTS(FUNCTION VARIABLE)
FUNCTION - the name of the function
VARIABLE - variable to store the result
The following variables may be set before calling this macro to modify the way the check is run:
CMAKE_REQUIRED_FLAGS = string of compile command line flags
CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
CMAKE_REQUIRED_INCLUDES = list of include directories
CMAKE_REQUIRED_LIBRARIES = list of libraries to link