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121 lines
4.8 KiB
121 lines
4.8 KiB
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#=============================================================================
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# Copyright 2009 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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# This file is included by CMakeFindEclipseCDT4.cmake and CMakeFindCodeBlocks.cmake
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# The Eclipse and the CodeBlocks generators need to know the standard include path
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# so that they can find the headers at runtime and parsing etc. works better
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# This is done here by actually running gcc with the options so it prints its
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# system include directories, which are parsed then and stored in the cache.
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MACRO(_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS _lang _resultIncludeDirs _resultDefines)
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SET(${_resultIncludeDirs})
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SET(_gccOutput)
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FILE(WRITE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy" "\n" )
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IF (${_lang} STREQUAL "c++")
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SET(_compilerExecutable "${CMAKE_CXX_COMPILER}")
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SET(_arg1 "${CMAKE_CXX_COMPILER_ARG1}")
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ELSE ()
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SET(_compilerExecutable "${CMAKE_C_COMPILER}")
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SET(_arg1 "${CMAKE_C_COMPILER_ARG1}")
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ENDIF ()
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EXECUTE_PROCESS(COMMAND ${_compilerExecutable} ${_arg1} -v -E -x ${_lang} -dD dummy
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WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/CMakeFiles
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ERROR_VARIABLE _gccOutput
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OUTPUT_VARIABLE _gccStdout )
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FILE(REMOVE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy")
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# First find the system include dirs:
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IF( "${_gccOutput}" MATCHES "> search starts here[^\n]+\n *(.+ *\n) *End of (search) list" )
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# split the output into lines and then remove leading and trailing spaces from each of them:
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STRING(REGEX MATCHALL "[^\n]+\n" _includeLines "${CMAKE_MATCH_1}")
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FOREACH(nextLine ${_includeLines})
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STRING(STRIP "${nextLine}" _includePath)
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LIST(APPEND ${_resultIncludeDirs} "${_includePath}")
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ENDFOREACH(nextLine)
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ENDIF()
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# now find the builtin macros:
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STRING(REGEX MATCHALL "#define[^\n]+\n" _defineLines "${_gccStdout}")
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# A few example lines which the regexp below has to match properly:
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# #define MAX(a,b) ((a) > (b) ? (a) : (b))
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# #define __fastcall __attribute__((__fastcall__))
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# #define FOO (23)
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# #define __UINTMAX_TYPE__ long long unsigned int
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# #define __UINTMAX_TYPE__ long long unsigned int
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# #define __i386__ 1
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FOREACH(nextLine ${_defineLines})
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STRING(REGEX MATCH "^#define +([A-Za-z_][A-Za-z0-9_]*)(\\([^\\)]+\\))? +(.+) *$" _dummy "${nextLine}")
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SET(_name "${CMAKE_MATCH_1}${CMAKE_MATCH_2}")
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STRING(STRIP "${CMAKE_MATCH_3}" _value)
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#MESSAGE(STATUS "m1: -${CMAKE_MATCH_1}- m2: -${CMAKE_MATCH_2}- m3: -${CMAKE_MATCH_3}-")
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LIST(APPEND ${_resultDefines} "${_name}")
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IF(_value)
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LIST(APPEND ${_resultDefines} "${_value}")
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ELSE()
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LIST(APPEND ${_resultDefines} " ")
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ENDIF()
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ENDFOREACH(nextLine)
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ENDMACRO(_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS _lang)
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# Save the current LC_ALL, LC_MESSAGES, and LANG environment variables and set them
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# to "C" that way GCC's "search starts here" text is in English and we can grok it.
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SET(_orig_lc_all $ENV{LC_ALL})
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SET(_orig_lc_messages $ENV{LC_MESSAGES})
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SET(_orig_lang $ENV{LANG})
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IF(_orig_lc_all)
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SET(ENV{LC_ALL} C)
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ENDIF()
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IF(_orig_lc_messages)
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SET(ENV{LC_MESSAGES} C)
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ENDIF()
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IF(_orig_lang)
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SET(ENV{LANG} C)
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ENDIF()
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# Now check for C, works for gcc and Intel compiler at least
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IF (NOT CMAKE_EXTRA_GENERATOR_C_SYSTEM_INCLUDE_DIRS)
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IF ("${CMAKE_C_COMPILER_ID}" MATCHES GNU OR "${CMAKE_C_COMPILER_ID}" MATCHES Intel)
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_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS(c _dirs _defines)
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SET(CMAKE_EXTRA_GENERATOR_C_SYSTEM_INCLUDE_DIRS "${_dirs}" CACHE INTERNAL "C compiler system include directories")
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SET(CMAKE_EXTRA_GENERATOR_C_SYSTEM_DEFINED_MACROS "${_defines}" CACHE INTERNAL "C compiler system defined macros")
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ENDIF ()
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ENDIF ()
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# And now the same for C++
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IF (NOT CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_INCLUDE_DIRS)
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IF ("${CMAKE_CXX_COMPILER_ID}" MATCHES GNU OR "${CMAKE_CXX_COMPILER_ID}" MATCHES Intel)
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_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS(c++ _dirs _defines)
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SET(CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_INCLUDE_DIRS "${_dirs}" CACHE INTERNAL "CXX compiler system include directories")
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SET(CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_DEFINED_MACROS "${_defines}" CACHE INTERNAL "CXX compiler system defined macros")
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ENDIF ()
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ENDIF ()
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# Restore original LC_ALL, LC_MESSAGES, and LANG
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IF(_orig_lc_all)
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SET(ENV{LC_ALL} ${_orig_lc_all})
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ENDIF()
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IF(_orig_lc_messages)
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SET(ENV{LC_MESSAGES} ${_orig_lc_messages})
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ENDIF()
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IF(_orig_lang)
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SET(ENV{LANG} ${_orig_lang})
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ENDIF()
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