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
C
variables.
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
New in version 3.14: list of options to pass to link command.
CMAKE_REQUIRED_LIBRARIES
list of libraries to link.
CMAKE_REQUIRED_QUIET
New in version 3.1: execute quietly without messages.