mirror of
https://github.com/reactos/CMake.git
synced 2024-11-26 13:00:25 +00:00
36 lines
1.5 KiB
CMake
36 lines
1.5 KiB
CMake
#
|
|
# Check if the function exists.
|
|
#
|
|
# CHECK_FUNCTION_EXISTS - macro which checks if the function exists
|
|
# FUNCTION - the name of the function
|
|
# VARIABLE - variable to store the result
|
|
#
|
|
|
|
MACRO(CHECK_FUNCTION_EXISTS FUNCTION VARIABLE)
|
|
IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
|
|
SET(MACRO_CHECK_FUNCTION_DEFINITIONS -DCHECK_FUNCTION_EXISTS=${FUNCTION}
|
|
${CMAKE_REQUIRED_FLAGS})
|
|
MESSAGE(STATUS "Looking for ${FUNCTION}")
|
|
IF(CMAKE_REQUIRED_LIBRARIES)
|
|
SET(CHECK_FUNCTION_EXISTS_ADD_LIBRARIES
|
|
"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
|
|
ENDIF(CMAKE_REQUIRED_LIBRARIES)
|
|
TRY_COMPILE(${VARIABLE}
|
|
${CMAKE_BINARY_DIR}
|
|
${CMAKE_ROOT}/Modules/CheckFunctionExists.c
|
|
CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS}
|
|
"${CHECK_FUNCTION_EXISTS_ADD_LIBRARIES}"
|
|
OUTPUT_VARIABLE OUTPUT)
|
|
IF(${VARIABLE})
|
|
SET(${VARIABLE} 1 CACHE INTERNAL "Have function ${FUNCTION}")
|
|
MESSAGE(STATUS "Looking for ${FUNCTION} - found")
|
|
ELSE(${VARIABLE})
|
|
MESSAGE(STATUS "Looking for ${FUNCTION} - not found")
|
|
SET(${VARIABLE} "" CACHE INTERNAL "Have function ${FUNCTION}")
|
|
WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeError.log
|
|
"Determining if the function ${FUNCTION} exists failed with the following output:\n"
|
|
"${OUTPUT}\n" APPEND)
|
|
ENDIF(${VARIABLE})
|
|
ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
|
|
ENDMACRO(CHECK_FUNCTION_EXISTS)
|