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-rw-r--r--Modules/CMakeTestCXXCompiler.cmake90
1 files changed, 48 insertions, 42 deletions
diff --git a/Modules/CMakeTestCXXCompiler.cmake b/Modules/CMakeTestCXXCompiler.cmake
index 87022e9..a5cdf56 100644
--- a/Modules/CMakeTestCXXCompiler.cmake
+++ b/Modules/CMakeTestCXXCompiler.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.
@@ -12,69 +12,75 @@
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
-INCLUDE(CMakeTestCompilerCommon)
+if(CMAKE_CXX_COMPILER_FORCED)
+ # The compiler configuration was forced by the user.
+ # Assume the user has configured all compiler information.
+ set(CMAKE_CXX_COMPILER_WORKS TRUE)
+ return()
+endif()
+
+include(CMakeTestCompilerCommon)
+
+# Remove any cached result from an older CMake version.
+# We now store this in CMakeCXXCompiler.cmake.
+unset(CMAKE_CXX_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_CXX_COMPILER_WORKS)
+if(NOT CMAKE_CXX_COMPILER_WORKS)
PrintTestCompilerStatus("CXX" "")
- FILE(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCXXCompiler.cxx
+ 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}
+ try_compile(CMAKE_CXX_COMPILER_WORKS ${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testCXXCompiler.cxx
OUTPUT_VARIABLE __CMAKE_CXX_COMPILER_OUTPUT)
- SET(CXX_TEST_WAS_RUN 1)
-ENDIF(NOT CMAKE_CXX_COMPILER_WORKS)
+ # Move result from cache to normal variable.
+ set(CMAKE_CXX_COMPILER_WORKS ${CMAKE_CXX_COMPILER_WORKS})
+ unset(CMAKE_CXX_COMPILER_WORKS CACHE)
+ set(CXX_TEST_WAS_RUN 1)
+endif()
-IF(NOT CMAKE_CXX_COMPILER_WORKS)
+if(NOT CMAKE_CXX_COMPILER_WORKS)
PrintTestCompilerStatus("CXX" " -- 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
+ file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
"Determining if the CXX compiler works failed with "
"the following output:\n${__CMAKE_CXX_COMPILER_OUTPUT}\n\n")
- MESSAGE(FATAL_ERROR "The C++ compiler \"${CMAKE_CXX_COMPILER}\" "
+ 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 ${__CMAKE_CXX_COMPILER_OUTPUT}\n\n"
"CMake will not be able to correctly generate this project.")
-ELSE(NOT CMAKE_CXX_COMPILER_WORKS)
- IF(CXX_TEST_WAS_RUN)
+else()
+ if(CXX_TEST_WAS_RUN)
PrintTestCompilerStatus("CXX" " -- works")
- FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+ file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
"Determining if the CXX compiler works passed with "
"the following output:\n${__CMAKE_CXX_COMPILER_OUTPUT}\n\n")
- ENDIF(CXX_TEST_WAS_RUN)
- SET(CMAKE_CXX_COMPILER_WORKS 1 CACHE INTERNAL "")
+ endif()
+
+ # Try to identify the ABI and configure it into CMakeCXXCompiler.cmake
+ include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerABI.cmake)
+ CMAKE_DETERMINE_COMPILER_ABI(CXX ${CMAKE_ROOT}/Modules/CMakeCXXCompilerABI.cpp)
+
+ # Re-configure to save learned information.
+ configure_file(
+ ${CMAKE_ROOT}/Modules/CMakeCXXCompiler.cmake.in
+ ${CMAKE_PLATFORM_INFO_DIR}/CMakeCXXCompiler.cmake
+ @ONLY IMMEDIATE # IMMEDIATE must be here for compatibility mode <= 2.0
+ )
+ include(${CMAKE_PLATFORM_INFO_DIR}/CMakeCXXCompiler.cmake)
- 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
- )
- INCLUDE(${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeCXXCompiler.cmake)
- ENDIF(CMAKE_CXX_COMPILER_FORCED)
- IF(CMAKE_CXX_SIZEOF_DATA_PTR)
- FOREACH(f ${CMAKE_CXX_ABI_FILES})
- INCLUDE(${f})
- ENDFOREACH()
- UNSET(CMAKE_CXX_ABI_FILES)
- ENDIF()
-ENDIF(NOT CMAKE_CXX_COMPILER_WORKS)
+ if(CMAKE_CXX_SIZEOF_DATA_PTR)
+ foreach(f ${CMAKE_CXX_ABI_FILES})
+ include(${f})
+ endforeach()
+ unset(CMAKE_CXX_ABI_FILES)
+ endif()
+endif()
-UNSET(__CMAKE_CXX_COMPILER_OUTPUT)
+unset(__CMAKE_CXX_COMPILER_OUTPUT)