53 lines
2.3 KiB
CMake
53 lines
2.3 KiB
CMake
# - Check sizeof a type
|
|
# CHECK_TYPE_SIZE(TYPE VARIABLE)
|
|
# Check if the type exists and determine size of type. if the type
|
|
# exists, the size will be stored to the variable.
|
|
#
|
|
# VARIABLE - variable to store size if the type exists.
|
|
# HAVE_${VARIABLE} - does the variable exists or not
|
|
|
|
MACRO(CHECK_TYPE_SIZE TYPE VARIABLE)
|
|
SET(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS 1)
|
|
IF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
|
|
SET(CHECK_TYPE_SIZE_TYPE "${TYPE}")
|
|
SET(MACRO_CHECK_TYPE_SIZE_FLAGS
|
|
"${CMAKE_REQUIRED_FLAGS}")
|
|
FOREACH(def HAVE_SYS_TYPES_H HAVE_STDINT_H HAVE_STDDEF_H)
|
|
IF("${def}")
|
|
SET(MACRO_CHECK_TYPE_SIZE_FLAGS
|
|
"${MACRO_CHECK_TYPE_SIZE_FLAGS} -D${def}")
|
|
ENDIF("${def}")
|
|
ENDFOREACH(def)
|
|
SET(CHECK_TYPE_SIZE_PREINCLUDE)
|
|
SET(CHECK_TYPE_SIZE_PREMAIN)
|
|
FOREACH(def ${CMAKE_EXTRA_INCLUDE_FILES})
|
|
SET(CHECK_TYPE_SIZE_PREMAIN "${CHECK_TYPE_SIZE_PREMAIN}#include \"${def}\"\n")
|
|
ENDFOREACH(def)
|
|
CONFIGURE_FILE("${CMAKE_ROOT}/Modules/CheckTypeSize.c.in"
|
|
"${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckTypeSize.c" IMMEDIATE @ONLY)
|
|
FILE(READ "${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckTypeSize.c"
|
|
CHECK_TYPE_SIZE_FILE_CONTENT)
|
|
MESSAGE(STATUS "Check size of ${TYPE}")
|
|
IF(CMAKE_REQUIRED_LIBRARIES)
|
|
SET(CHECK_TYPE_SIZE_ADD_LIBRARIES
|
|
"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}")
|
|
ENDIF(CMAKE_REQUIRED_LIBRARIES)
|
|
TRY_RUN(${VARIABLE} HAVE_${VARIABLE}
|
|
${CMAKE_BINARY_DIR}
|
|
"${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckTypeSize.c"
|
|
CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_TYPE_SIZE_FLAGS}
|
|
"${CHECK_TYPE_SIZE_ADD_LIBRARIES}"
|
|
OUTPUT_VARIABLE OUTPUT)
|
|
IF(HAVE_${VARIABLE})
|
|
MESSAGE(STATUS "Check size of ${TYPE} - done")
|
|
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeOutput.log
|
|
"Determining size of ${TYPE} passed with the following output:\n${OUTPUT}\n\n")
|
|
ELSE(HAVE_${VARIABLE})
|
|
MESSAGE(STATUS "Check size of ${TYPE} - failed")
|
|
FILE(APPEND ${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log
|
|
"Determining size of ${TYPE} failed with the following output:\n${OUTPUT}\nCheckTypeSize.c:\n${CHECK_TYPE_SIZE_FILE_CONTENT}\n\n")
|
|
ENDIF(HAVE_${VARIABLE})
|
|
ENDIF("HAVE_${VARIABLE}" MATCHES "^HAVE_${VARIABLE}$")
|
|
SET(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS )
|
|
ENDMACRO(CHECK_TYPE_SIZE)
|