| |
| #============================================================================= |
| # 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) |
| |
| # Look for a make tool provided by Xcode |
| if(CMAKE_${lang}_COMPILER STREQUAL "CMAKE_${lang}_COMPILER-NOTFOUND" AND CMAKE_HOST_APPLE) |
| foreach(comp ${CMAKE_${lang}_COMPILER_LIST}) |
| execute_process(COMMAND xcrun --find ${comp} |
| OUTPUT_VARIABLE _xcrun_out OUTPUT_STRIP_TRAILING_WHITESPACE |
| ERROR_VARIABLE _xcrun_err) |
| if(_xcrun_out) |
| set_property(CACHE CMAKE_${lang}_COMPILER PROPERTY VALUE "${_xcrun_out}") |
| break() |
| endif() |
| endforeach() |
| endif() |
| endmacro() |