diff options
Diffstat (limited to 'Modules/CMakeTestCCompiler.cmake')
| -rw-r--r-- | Modules/CMakeTestCCompiler.cmake | 90 |
1 files changed, 48 insertions, 42 deletions
diff --git a/Modules/CMakeTestCCompiler.cmake b/Modules/CMakeTestCCompiler.cmake index 779b2f007..2c751471a 100644 --- a/Modules/CMakeTestCCompiler.cmake +++ b/Modules/CMakeTestCCompiler.cmake @@ -1,6 +1,6 @@ #============================================================================= -# Copyright 2003-2009 Kitware, Inc. +# Copyright 2003-2012 Kitware, Inc. # # Distributed under the OSI-approved BSD License (the "License"); # see accompanying file Copyright.txt for details. @@ -12,16 +12,27 @@ # (To distribute this file outside of CMake, substitute the full # License text for the above reference.) -INCLUDE(CMakeTestCompilerCommon) +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) +if(NOT CMAKE_C_COMPILER_WORKS) PrintTestCompilerStatus("C" "") - FILE(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCCompiler.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" @@ -33,55 +44,50 @@ IF(NOT CMAKE_C_COMPILER_WORKS) "int main(int argc, char* argv[])\n" "#endif\n" "{ (void)argv; return argc-1;}\n") - TRY_COMPILE(CMAKE_C_COMPILER_WORKS ${CMAKE_BINARY_DIR} + try_compile(CMAKE_C_COMPILER_WORKS ${CMAKE_BINARY_DIR} ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCCompiler.c OUTPUT_VARIABLE __CMAKE_C_COMPILER_OUTPUT) - SET(C_TEST_WAS_RUN 1) -ENDIF(NOT CMAKE_C_COMPILER_WORKS) + # 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) +if(NOT CMAKE_C_COMPILER_WORKS) PrintTestCompilerStatus("C" " -- broken") - FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log + 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") - # 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 ${CMAKE_PLATFORM_ROOT_BIN}/CMakeCXXPlatform.cmake ) - MESSAGE(FATAL_ERROR "The C compiler \"${CMAKE_C_COMPILER}\" " + 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 ${__CMAKE_C_COMPILER_OUTPUT}\n\n" "CMake will not be able to correctly generate this project.") -ELSE(NOT CMAKE_C_COMPILER_WORKS) - IF(C_TEST_WAS_RUN) +else() + if(C_TEST_WAS_RUN) PrintTestCompilerStatus("C" " -- works") - FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log + file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log "Determining if the C compiler works passed with " "the following output:\n${__CMAKE_C_COMPILER_OUTPUT}\n\n") - ENDIF(C_TEST_WAS_RUN) - SET(CMAKE_C_COMPILER_WORKS 1 CACHE INTERNAL "") + endif() + + # Try to identify the ABI and configure it into CMakeCCompiler.cmake + include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake) + CMAKE_DETERMINE_COMPILER_ABI(C ${CMAKE_ROOT}/Modules/CMakeCCompilerABI.c) + + # Re-configure to save learned information. + configure_file( + ${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in + ${CMAKE_PLATFORM_INFO_DIR}/CMakeCCompiler.cmake + @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0 + ) + include(${CMAKE_PLATFORM_INFO_DIR}/CMakeCCompiler.cmake) - IF(CMAKE_C_COMPILER_FORCED) - # The compiler configuration was forced by the user. - # Assume the user has configured all compiler information. - ELSE(CMAKE_C_COMPILER_FORCED) - # 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) - CONFIGURE_FILE( - ${CMAKE_ROOT}/Modules/CMakeCCompiler.cmake.in - ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCCompiler.cmake - @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0 - ) - INCLUDE(${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCCompiler.cmake) - ENDIF(CMAKE_C_COMPILER_FORCED) - IF(CMAKE_C_SIZEOF_DATA_PTR) - FOREACH(f ${CMAKE_C_ABI_FILES}) - INCLUDE(${f}) - ENDFOREACH() - UNSET(CMAKE_C_ABI_FILES) - ENDIF() -ENDIF(NOT CMAKE_C_COMPILER_WORKS) + 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) +unset(__CMAKE_C_COMPILER_OUTPUT) |