diff options
| -rw-r--r-- | CMakeLists.txt | 2 | ||||
| -rw-r--r-- | cmake/CheckCCompilerFlag.cmake | 59 |
2 files changed, 61 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index 484812e4..317a5129 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -6,6 +6,8 @@ IF(COMMAND CMAKE_POLICY) CMAKE_POLICY(SET CMP0003 NEW) ENDIF(COMMAND CMAKE_POLICY) +SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake") + INCLUDE(CheckFunctionExists) INCLUDE(CheckLibraryExists) INCLUDE(CheckIncludeFile) diff --git a/cmake/CheckCCompilerFlag.cmake b/cmake/CheckCCompilerFlag.cmake new file mode 100644 index 00000000..8b2361aa --- /dev/null +++ b/cmake/CheckCCompilerFlag.cmake @@ -0,0 +1,59 @@ +# - Check if the C source code provided in the SOURCE argument compiles. +# CHECK_C_SOURCE_COMPILES(SOURCE VAR) +# +# FLAG - compiler flag to check +# VAR - variable to store whether the source code compiled +# +# The following variables may be set before calling this macro to +# modify the way the check is run: +# +# CMAKE_REQUIRED_FLAGS = string of compile command line flags +# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar) +# CMAKE_REQUIRED_INCLUDES = list of include directories +# CMAKE_REQUIRED_LIBRARIES = list of libraries to link + +MACRO(CHECK_C_COMPILER_FLAG FLAG VAR) + IF("${VAR}" MATCHES "^${VAR}$") + SET(MACRO_CHECK_FUNCTION_DEFINITIONS + "${FLAG} ${CMAKE_REQUIRED_FLAGS}") + IF(CMAKE_REQUIRED_LIBRARIES) + SET(CHECK_C_COMPILER_FLAG_ADD_LIBRARIES + "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}") + ELSE(CMAKE_REQUIRED_LIBRARIES) + SET(CHECK_C_COMPILER_FLAG_ADD_LIBRARIES) + ENDIF(CMAKE_REQUIRED_LIBRARIES) + IF(CMAKE_REQUIRED_INCLUDES) + SET(CHECK_C_COMPILER_FLAG_ADD_INCLUDES + "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}") + ELSE(CMAKE_REQUIRED_INCLUDES) + SET(CHECK_C_COMPILER_FLAG_ADD_INCLUDES) + ENDIF(CMAKE_REQUIRED_INCLUDES) + FILE(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c" + "int main() {return 0;}\n") + + MESSAGE(STATUS "Checking if C compiler supports ${FLAG}") + TRY_COMPILE(${VAR} + ${CMAKE_BINARY_DIR} + ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c + COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS} + CMAKE_FLAGS -DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_FUNCTION_DEFINITIONS} + "${CHECK_C_COMPILER_FLAG_ADD_LIBRARIES}" + "${CHECK_C_COMPILER_FLAG_ADD_INCLUDES}" + OUTPUT_VARIABLE OUTPUT) + IF(${VAR}) + SET(${VAR} 1 CACHE INTERNAL "Test ${VAR}") + MESSAGE(STATUS "Checking if C compiler supports ${FLAG} - Success") + FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + "Performing C SOURCE FILE Test ${VAR} succeded with the following output:\n" + "${OUTPUT}\n" + "Source file was:\n${SOURCE}\n") + ELSE(${VAR}) + MESSAGE(STATUS "Checking if C compiler supports ${FLAG} - Failed") + SET(${VAR} "" CACHE INTERNAL "Test ${VAR}") + FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + "Performing C SOURCE FILE Test ${VAR} failed with the following output:\n" + "${OUTPUT}\n" + "Source file was:\n${SOURCE}\n") + ENDIF(${VAR}) + ENDIF("${VAR}" MATCHES "^${VAR}$") +ENDMACRO(CHECK_C_COMPILER_FLAG) |