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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_C_COMPILER_WORKS)
MESSAGE(STATUS "Check for working C compiler: ${CMAKE_C_COMPILER}")
FILE(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCCompiler.c
"#ifdef __cplusplus\n"
"# error \"The CMAKE_C_COMPILER is set to a C++ compiler\"\n"
"#endif\n"
"#include <stdio.h>\n"
"#if defined(__CLASSIC_C__)\n"
"int main(argc, argv)\n"
" int argc;\n"
" char* argv[];\n"
"#else\n"
"int main(int argc, char* argv[])\n"
"#endif\n"
"{ printf(\"%s\\n\", argv[0]); return argc-1;}\n")
TRY_COMPILE(CMAKE_C_COMPILER_WORKS ${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCCompiler.c
OUTPUT_VARIABLE OUTPUT)
SET(C_TEST_WAS_RUN 1)
ENDIF(NOT CMAKE_C_COMPILER_WORKS)
IF(NOT CMAKE_C_COMPILER_WORKS)
MESSAGE(STATUS "Check for working C compiler: ${CMAKE_C_COMPILER} -- broken")
FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the C compiler works failed with "
"the following output:\n${OUTPUT}\n\n")
MESSAGE(FATAL_ERROR "The C compiler \"${CMAKE_C_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_C_COMPILER_WORKS)
IF(C_TEST_WAS_RUN)
MESSAGE(STATUS "Check for working C compiler: ${CMAKE_C_COMPILER} -- works")
FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the C compiler works passed with "
"the following output:\n${OUTPUT}\n\n")
ENDIF(C_TEST_WAS_RUN)
INCLUDE (${CMAKE_ROOT}/Modules/CheckTypeSize.cmake)
# Check the size of void*. This used to be "void *" but icc expands the *.
CHECK_TYPE_SIZE("void*" CMAKE_SIZEOF_VOID_P)
SET(CMAKE_C_COMPILER_WORKS 1 CACHE INTERNAL "")
# re-configure this file CMakeCCompiler.cmake so that it gets
# the value for CMAKE_SIZEOF_VOID_P
# configure variables set in this file for fast reload later on
CONFIGURE_FILE(${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCCompiler.cmake IMMEDIATE)
ENDIF(NOT CMAKE_C_COMPILER_WORKS)
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