| MACRO(TRY_COMPILE_FROM_SOURCE SOURCE VAR) |
| IF("${VAR}" MATCHES "^${VAR}$" OR "${VAR}" MATCHES "UNKNOWN") |
| SET(MACRO_CHECK_FUNCTION_DEFINITIONS |
| "-D${VAR} ${CMAKE_REQUIRED_FLAGS}") |
| IF(CMAKE_REQUIRED_LIBRARIES) |
| SET(TRY_COMPILE_FROM_SOURCE_ADD_LIBRARIES |
| "-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES}") |
| ENDIF(CMAKE_REQUIRED_LIBRARIES) |
| SET(src "") |
| FOREACH(def ${EXTRA_DEFINES}) |
| SET(src "${src}#define ${def} 1\n") |
| ENDFOREACH(def) |
| FOREACH(inc ${HEADER_INCLUDES}) |
| SET(src "${src}#include <${inc}>\n") |
| ENDFOREACH(inc) |
| |
| SET(src "${src}\nint main() { ${SOURCE} ; return 0; }") |
| FILE(WRITE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src2.c" |
| "${src}\n") |
| EXEC_PROGRAM("${CMAKE_COMMAND}" |
| "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp" |
| ARGS -E copy src2.c src.c) |
| MESSAGE(STATUS "Performing Test ${VAR}") |
| TRY_COMPILE(${VAR} |
| ${CMAKE_BINARY_DIR} |
| ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/src.c |
| CMAKE_FLAGS |
| "${TRY_COMPILE_FROM_SOURCE_ADD_LIBRARIES}" |
| OUTPUT_VARIABLE OUTPUT) |
| IF(${VAR}) |
| SET(${VAR} 1 CACHE INTERNAL "Test ${FUNCTION}") |
| MESSAGE(STATUS "Performing Test ${VAR} - 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${src}\n") |
| ELSE(${VAR}) |
| MESSAGE(STATUS "Performing Test ${VAR} - Failed") |
| SET(${VAR} "" CACHE INTERNAL "Test ${FUNCTION}") |
| 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${src}\n") |
| ENDIF(${VAR}) |
| ENDIF("${VAR}" MATCHES "^${VAR}$" OR "${VAR}" MATCHES "UNKNOWN") |
| ENDMACRO(TRY_COMPILE_FROM_SOURCE) |
