CheckVariableExists¶
Check if the variable exists.
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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