# This file is used by EnableLanguage in cmGlobalGenerator to # determine that that selected C++ compiler can actually compile # and link the most basic of programs. If not, a fatal error # is set and cmake stops processing commands and will not generate # any makefiles or projects. IF(NOT CMAKE_CXX_COMPILER_WORKS) MESSAGE(STATUS "Check for working CXX compiler: ${CMAKE_CXX_COMPILER}") FILE(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCXXCompiler.cxx "#ifndef __cplusplus\n" "# error \"The CMAKE_CXX_COMPILER is set to a C compiler\"\n" "#endif\n" "int main(){return 0;}\n") TRY_COMPILE(CMAKE_CXX_COMPILER_WORKS ${CMAKE_BINARY_DIR} ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCXXCompiler.cxx OUTPUT_VARIABLE OUTPUT) SET(CXX_TEST_WAS_RUN 1) ENDIF(NOT CMAKE_CXX_COMPILER_WORKS) IF(NOT CMAKE_CXX_COMPILER_WORKS) MESSAGE(STATUS "Check for working CXX compiler: ${CMAKE_CXX_COMPILER} -- broken") FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log "Determining if the CXX compiler works failed with " "the following output:\n${OUTPUT}\n\n") MESSAGE(FATAL_ERROR "The C++ compiler \"${CMAKE_CXX_COMPILER}\" " "is not able to compile a simple test program.\nIt fails " "with the following output:\n ${OUTPUT}\n\n" "CMake will not be able to correctly generate this project.") ELSE(NOT CMAKE_CXX_COMPILER_WORKS) IF(CXX_TEST_WAS_RUN) MESSAGE(STATUS "Check for working CXX compiler: ${CMAKE_CXX_COMPILER} -- works") FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log "Determining if the CXX compiler works passed with " "the following output:\n${OUTPUT}\n\n") ENDIF(CXX_TEST_WAS_RUN) SET(CMAKE_CXX_COMPILER_WORKS 1 CACHE INTERNAL "") IF(CMAKE_CXX_COMPILER_FORCED) # The compiler was forced by the CMAKE_FORCE_CXX_COMPILER macro. # Assume the user has configured all compiler information. ELSE(CMAKE_CXX_COMPILER_FORCED) # Try to identify the ABI and configure it into CMakeCXXCompiler.cmake INCLUDE(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake) CMAKE_DETERMINE_COMPILER_ABI(CXX ${CMAKE_ROOT}/Modules/CMakeCXXCompilerABI.cpp) CONFIGURE_FILE( ${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCXXCompiler.cmake @ONLY ) ENDIF(CMAKE_CXX_COMPILER_FORCED) ENDIF(NOT CMAKE_CXX_COMPILER_WORKS)