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-rw-r--r--Modules/CMakeDetermineCompiler.cmake72
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diff --git a/Modules/CMakeDetermineCompiler.cmake b/Modules/CMakeDetermineCompiler.cmake
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+
+#=============================================================================
+# Copyright 2004-2012 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+# License text for the above reference.)
+
+macro(_cmake_find_compiler lang)
+ # Use already-enabled languages for reference.
+ get_property(_languages GLOBAL PROPERTY ENABLED_LANGUAGES)
+ list(REMOVE_ITEM _languages "${lang}")
+
+ if(CMAKE_${lang}_COMPILER_INIT)
+ # Search only for the specified compiler.
+ set(CMAKE_${lang}_COMPILER_LIST "${CMAKE_${lang}_COMPILER_INIT}")
+ else()
+ # Re-order the compiler list with preferred vendors first.
+ set(_${lang}_COMPILER_LIST "${CMAKE_${lang}_COMPILER_LIST}")
+ set(CMAKE_${lang}_COMPILER_LIST "")
+ # Prefer vendors of compilers from reference languages.
+ foreach(l ${_languages})
+ list(APPEND CMAKE_${lang}_COMPILER_LIST
+ ${_${lang}_COMPILER_NAMES_${CMAKE_${l}_COMPILER_ID}})
+ endforeach()
+ # Prefer vendors based on the platform.
+ list(APPEND CMAKE_${lang}_COMPILER_LIST ${CMAKE_${lang}_COMPILER_NAMES})
+ # Append the rest of the list and remove duplicates.
+ list(APPEND CMAKE_${lang}_COMPILER_LIST ${_${lang}_COMPILER_LIST})
+ unset(_${lang}_COMPILER_LIST)
+ list(REMOVE_DUPLICATES CMAKE_${lang}_COMPILER_LIST)
+ if(CMAKE_${lang}_COMPILER_EXCLUDE)
+ list(REMOVE_ITEM CMAKE_${lang}_COMPILER_LIST
+ ${CMAKE_${lang}_COMPILER_EXCLUDE})
+ endif()
+ endif()
+
+ # Look for directories containing compilers of reference languages.
+ set(_${lang}_COMPILER_HINTS)
+ foreach(l ${_languages})
+ if(CMAKE_${l}_COMPILER AND IS_ABSOLUTE "${CMAKE_${l}_COMPILER}")
+ get_filename_component(_hint "${CMAKE_${l}_COMPILER}" PATH)
+ if(IS_DIRECTORY "${_hint}")
+ list(APPEND _${lang}_COMPILER_HINTS "${_hint}")
+ endif()
+ unset(_hint)
+ endif()
+ endforeach()
+
+ # Find the compiler.
+ if(_${lang}_COMPILER_HINTS)
+ # Prefer directories containing compilers of reference languages.
+ list(REMOVE_DUPLICATES _${lang}_COMPILER_HINTS)
+ find_program(CMAKE_${lang}_COMPILER
+ NAMES ${CMAKE_${lang}_COMPILER_LIST}
+ PATHS ${_${lang}_COMPILER_HINTS}
+ NO_DEFAULT_PATH
+ DOC "${lang} compiler")
+ endif()
+ find_program(CMAKE_${lang}_COMPILER NAMES ${CMAKE_${lang}_COMPILER_LIST} DOC "${lang} compiler")
+ if(CMAKE_${lang}_COMPILER_INIT AND NOT CMAKE_${lang}_COMPILER)
+ set(CMAKE_${lang}_COMPILER "${CMAKE_${lang}_COMPILER_INIT}" CACHE FILEPATH "${lang} compiler" FORCE)
+ endif()
+ unset(_${lang}_COMPILER_HINTS)
+ unset(_languages)
+endmacro()