diff options
Diffstat (limited to 'share/cmake-3.10/Modules/CMakeTestCCompiler.cmake')
-rw-r--r-- | share/cmake-3.10/Modules/CMakeTestCCompiler.cmake | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/share/cmake-3.10/Modules/CMakeTestCCompiler.cmake b/share/cmake-3.10/Modules/CMakeTestCCompiler.cmake new file mode 100644 index 0000000..e34ae75 --- /dev/null +++ b/share/cmake-3.10/Modules/CMakeTestCCompiler.cmake @@ -0,0 +1,87 @@ +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + + +if(CMAKE_C_COMPILER_FORCED) + # The compiler configuration was forced by the user. + # Assume the user has configured all compiler information. + set(CMAKE_C_COMPILER_WORKS TRUE) + return() +endif() + +include(CMakeTestCompilerCommon) + +# Remove any cached result from an older CMake version. +# We now store this in CMakeCCompiler.cmake. +unset(CMAKE_C_COMPILER_WORKS CACHE) + +# 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) + PrintTestCompilerStatus("C" "") + 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" + "#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" + "{ (void)argv; return argc-1;}\n") + try_compile(CMAKE_C_COMPILER_WORKS ${CMAKE_BINARY_DIR} + ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCCompiler.c + OUTPUT_VARIABLE __CMAKE_C_COMPILER_OUTPUT) + # Move result from cache to normal variable. + set(CMAKE_C_COMPILER_WORKS ${CMAKE_C_COMPILER_WORKS}) + unset(CMAKE_C_COMPILER_WORKS CACHE) + set(C_TEST_WAS_RUN 1) +endif() + +if(NOT CMAKE_C_COMPILER_WORKS) + PrintTestCompilerStatus("C" " -- broken") + file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + "Determining if the C compiler works failed with " + "the following output:\n${__CMAKE_C_COMPILER_OUTPUT}\n\n") + string(REPLACE "\n" "\n " _output "${__CMAKE_C_COMPILER_OUTPUT}") + message(FATAL_ERROR "The C compiler\n \"${CMAKE_C_COMPILER}\"\n" + "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() + if(C_TEST_WAS_RUN) + PrintTestCompilerStatus("C" " -- works") + file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + "Determining if the C compiler works passed with " + "the following output:\n${__CMAKE_C_COMPILER_OUTPUT}\n\n") + endif() + + # Try to identify the ABI and configure it into CMakeCCompiler.cmake + include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake) + CMAKE_DETERMINE_COMPILER_ABI(C ${CMAKE_ROOT}/Modules/CMakeCCompilerABI.c) + # Try to identify the compiler features + include(${CMAKE_ROOT}/Modules/CMakeDetermineCompileFeatures.cmake) + CMAKE_DETERMINE_COMPILE_FEATURES(C) + + # Re-configure to save learned information. + configure_file( + ${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in + ${CMAKE_PLATFORM_INFO_DIR}/CMakeCCompiler.cmake + @ONLY + ) + include(${CMAKE_PLATFORM_INFO_DIR}/CMakeCCompiler.cmake) + + if(CMAKE_C_SIZEOF_DATA_PTR) + foreach(f ${CMAKE_C_ABI_FILES}) + include(${f}) + endforeach() + unset(CMAKE_C_ABI_FILES) + endif() +endif() + +unset(__CMAKE_C_COMPILER_OUTPUT) |