CheckVariableExists¶
Check if the variable exists.
- 
CHECK_VARIABLE_EXISTS¶
- CHECK_VARIABLE_EXISTS(VAR VARIABLE) - VAR - the name of the variable VARIABLE - variable to store the result Will be created as an internal cache variable.- This macro is only for - Cvariables.
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_LINK_OPTIONS = list of options to pass to link command
CMAKE_REQUIRED_LIBRARIES = list of libraries to link
CMAKE_REQUIRED_QUIET = execute quietly without messages
