9d967ed47b
Now gcc is queried also for the builtin definitions, and they are then added to the .cproject file. This should make the preprocessor highlighting in eclipse work better (#9272) Patch mostly from Miguel. Alex
80 lines
3.7 KiB
CMake
80 lines
3.7 KiB
CMake
# This file is included in CMakeSystemSpecificInformation.cmake if
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# the Eclipse CDT4 extra generator has been selected.
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FIND_PROGRAM(CMAKE_ECLIPSE_EXECUTABLE NAMES eclipse DOC "The Eclipse executable")
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# The Eclipse generator needs to know the standard include path
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# so that Eclipse ca 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 _result _resultDefines)
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SET(${_result})
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SET(_gccOutput)
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FILE(WRITE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy" "\n" )
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EXECUTE_PROCESS(COMMAND ${CMAKE_C_COMPILER} -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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IF( "${_gccOutput}" MATCHES "> search starts here[^\n]+\n *(.+) *\n *End of (search) list" )
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SET(${_result} ${CMAKE_MATCH_1})
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STRING(REPLACE "\n" " " ${_result} "${${_result}}")
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SEPARATE_ARGUMENTS(${_result})
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ENDIF( "${_gccOutput}" MATCHES "> search starts here[^\n]+\n *(.+) *\n *End of (search) list" )
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IF( "${_gccStdout}" MATCHES "built-in>\"\n(.+)# 1 +\"dummy\"" )
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SET(_builtinDefines ${CMAKE_MATCH_1})
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# Remove the '# 1 "<command-line>"' lines
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STRING(REGEX REPLACE "# 1[^\n]+\n" "" _filteredOutput "${_builtinDefines}")
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# Remove the "#define " parts from the output:
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STRING(REGEX REPLACE "#define " "" _defineRemoved "${_filteredOutput}")
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# Replace the line breaks with spaces, so we can use separate arguments afterwards
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STRING(REGEX REPLACE "\n" " " _defineRemoved "${_defineRemoved}")
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# Remove space at the end, this would produce empty list items
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STRING(REGEX REPLACE " +$" "" ${_resultDefines} "${_defineRemoved}")
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SEPARATE_ARGUMENTS(${_resultDefines})
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ENDIF( "${_gccStdout}" MATCHES "built-in>\"\n(.+)# 1 +\"dummy\"" )
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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 $ENV{LANG})
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IF(_orig_lc_all)
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SET(ENV{LC_ALL} C)
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ENDIF(_orig_lc_all)
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IF(_orig_lc_messages)
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SET(ENV{LC_MESSAGES} C)
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ENDIF(_orig_lc_messages)
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IF(_orig_lang)
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SET(ENV{LANG} C)
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ENDIF(_orig_lang)
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# Now check for C
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IF ("${CMAKE_C_COMPILER_ID}" MATCHES GNU AND NOT CMAKE_ECLIPSE_C_SYSTEM_INCLUDE_DIRS)
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_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS(c _dirs _defines)
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SET(CMAKE_ECLIPSE_C_SYSTEM_INCLUDE_DIRS "${_dirs}" CACHE INTERNAL "C compiler system include directories")
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SET(CMAKE_ECLIPSE_C_SYSTEM_DEFINED_MACROS "${_defines}" CACHE INTERNAL "C compiler system defined macros")
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ENDIF ("${CMAKE_C_COMPILER_ID}" MATCHES GNU AND NOT CMAKE_ECLIPSE_C_SYSTEM_INCLUDE_DIRS)
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# And now the same for C++
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IF ("${CMAKE_CXX_COMPILER_ID}" MATCHES GNU AND NOT CMAKE_ECLIPSE_CXX_SYSTEM_INCLUDE_DIRS)
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_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS(c++ _dirs _defines)
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SET(CMAKE_ECLIPSE_CXX_SYSTEM_INCLUDE_DIRS "${_dirs}" CACHE INTERNAL "CXX compiler system include directories")
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SET(CMAKE_ECLIPSE_CXX_SYSTEM_DEFINED_MACROS "${_defines}" CACHE INTERNAL "CXX compiler system defined macros")
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ENDIF ("${CMAKE_CXX_COMPILER_ID}" MATCHES GNU AND NOT CMAKE_ECLIPSE_CXX_SYSTEM_INCLUDE_DIRS)
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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(_orig_lc_all)
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IF(_orig_lc_messages)
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SET(ENV{LC_MESSAGES} ${_orig_lc_messages})
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ENDIF(_orig_lc_messages)
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IF(_orig_lang)
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SET(ENV{LANG} ${_orig_lang})
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ENDIF(_orig_lang)
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