diff options
| -rw-r--r-- | Modules/CheckTypeSize.cmake | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/Modules/CheckTypeSize.cmake b/Modules/CheckTypeSize.cmake index c4163cc1a4..edaa00632c 100644 --- a/Modules/CheckTypeSize.cmake +++ b/Modules/CheckTypeSize.cmake @@ -2,9 +2,15 @@ # 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_${VARIABLE} - does the variable exists or not +# The following variables may be set before calling this macro to +# modify the way the check is run: +# +# CMAKE_REQUIRED_FLAGS = string of compile command line flags +# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar) +# CMAKE_REQUIRED_INCLUDES = list of include directories +# CMAKE_REQUIRED_LIBRARIES = list of libraries to link MACRO(CHECK_TYPE_SIZE TYPE VARIABLE) SET(CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS 1) @@ -31,12 +37,22 @@ MACRO(CHECK_TYPE_SIZE TYPE VARIABLE) IF(CMAKE_REQUIRED_LIBRARIES) SET(CHECK_TYPE_SIZE_ADD_LIBRARIES "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}") + ELSE(CMAKE_REQUIRED_LIBRARIES) + SET(CHECK_TYPE_SIZE_ADD_LIBRARIES) ENDIF(CMAKE_REQUIRED_LIBRARIES) + IF(CMAKE_REQUIRED_INCLUDES) + SET(CHECK_TYPE_SIZE_ADD_INCLUDES + "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}") + ELSE(CMAKE_REQUIRED_INCLUDES) + SET(CHECK_TYPE_SIZE_ADD_INCLUDES) + ENDIF(CMAKE_REQUIRED_INCLUDES) TRY_RUN(${VARIABLE} HAVE_${VARIABLE} ${CMAKE_BINARY_DIR} "${CMAKE_BINARY_DIR}/CMakeFiles/CMakeTmp/CheckTypeSize.c" + COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_TYPE_SIZE_FLAGS} "${CHECK_TYPE_SIZE_ADD_LIBRARIES}" + "${CHECK_TYPE_SIZE_ADD_INCLUDES}" OUTPUT_VARIABLE OUTPUT) IF(HAVE_${VARIABLE}) MESSAGE(STATUS "Check size of ${TYPE} - done") |