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# 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")
# if the compiler is broken make sure to remove the platform file
# since Windows-cl configures both c/cxx files both need to be removed
# when c or c++ fails
FILE(REMOVE ${CMAKE_PLATFORM_ROOT_BIN}/CMakeCPlatform.cmake )
FILE(REMOVE ${CMAKE_PLATFORM_ROOT_BIN}/CMakeCXXPlatform.cmake )
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${OUTPUT}\n\n")
ENDIF(CXX_TEST_WAS_RUN)
SET(CMAKE_CXX_COMPILER_WORKS 1 CACHE INTERNAL "")
IF(CMAKE_CXX_COMPILER_FORCED)
# The compiler configuration was forced by the user.
# Assume the user has configured all compiler information.
ELSE(CMAKE_CXX_COMPILER_FORCED)
# Try to identify the ABI and configure it into CMakeCXXCompiler.cmake
INCLUDE(${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 IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
)
ENDIF(CMAKE_CXX_COMPILER_FORCED)
ENDIF(NOT CMAKE_CXX_COMPILER_WORKS)
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