d97b38529e
On OSX, the output from gcc looks like this: /usr/include/c++/4.2.1 /usr/include/c++/4.2.1/i686-apple-darwin10/x86_64 /usr/include/c++/4.2.1/backward /usr/lib/gcc/i686-apple-darwin10/4.2.1/include /usr/include /System/Library/Frameworks (framework directory) /Library/Frameworks (framework directory) End of search list. The "(framework directory)" part needs to be removed so that Eclipse handles it properly Alex
113 lines
4.9 KiB
CMake
113 lines
4.9 KiB
CMake
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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 ${_includeLines})
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# on OSX, gcc says things like this: "/System/Library/Frameworks (framework directory)", strip the last part
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string(REGEX REPLACE "\\(framework directory\\)" "" nextLineNoFramework "${nextLine}")
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# strip spaces at the beginning and the end
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string(STRIP "${nextLineNoFramework}" _includePath)
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list(APPEND ${_resultIncludeDirs} "${_includePath}")
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endforeach()
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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()
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endmacro()
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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 $ENV{LANG})
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set(ENV{LC_ALL} C)
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set(ENV{LC_MESSAGES} C)
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set(ENV{LANG} C)
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# Now check for C, works for gcc and Intel compiler at least
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if (NOT CMAKE_EXTRA_GENERATOR_C_SYSTEM_INCLUDE_DIRS)
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if ("${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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set(ENV{LC_ALL} ${_orig_lc_all})
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set(ENV{LC_MESSAGES} ${_orig_lc_messages})
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set(ENV{LANG} ${_orig_lang})
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