diff options
Diffstat (limited to 'Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake')
-rw-r--r-- | Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake b/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake new file mode 100644 index 000000000..455f95fe3 --- /dev/null +++ b/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake @@ -0,0 +1,109 @@ + +#============================================================================= +# Copyright 2009 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.) + +# This file is included by CMakeFindEclipseCDT4.cmake and CMakeFindCodeBlocks.cmake + +# The Eclipse and the CodeBlocks generators need to know the standard include path +# so that they can find the headers at runtime and parsing etc. works better +# This is done here by actually running gcc with the options so it prints its +# system include directories, which are parsed then and stored in the cache. +MACRO(_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS _lang _resultIncludeDirs _resultDefines) + SET(${_resultIncludeDirs}) + SET(_gccOutput) + FILE(WRITE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy" "\n" ) + + IF (${_lang} STREQUAL "c++") + SET(_compilerExecutable "${CMAKE_CXX_COMPILER}") + SET(_arg1 "${CMAKE_CXX_COMPILER_ARG1}") + ELSE () + SET(_compilerExecutable "${CMAKE_C_COMPILER}") + SET(_arg1 "${CMAKE_C_COMPILER_ARG1}") + ENDIF () + EXECUTE_PROCESS(COMMAND ${_compilerExecutable} ${_arg1} -v -E -x ${_lang} -dD dummy + WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/CMakeFiles + ERROR_VARIABLE _gccOutput + OUTPUT_VARIABLE _gccStdout ) + FILE(REMOVE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy") + + # First find the system include dirs: + IF( "${_gccOutput}" MATCHES "> search starts here[^\n]+\n *(.+ *\n) *End of (search) list" ) + + # split the output into lines and then remove leading and trailing spaces from each of them: + STRING(REGEX MATCHALL "[^\n]+\n" _includeLines "${CMAKE_MATCH_1}") + FOREACH(nextLine ${_includeLines}) + STRING(STRIP "${nextLine}" _includePath) + LIST(APPEND ${_resultIncludeDirs} "${_includePath}") + ENDFOREACH(nextLine) + + ENDIF() + + + # now find the builtin macros: + STRING(REGEX MATCHALL "#define[^\n]+\n" _defineLines "${_gccStdout}") +# A few example lines which the regexp below has to match properly: +# #define MAX(a,b) ((a) > (b) ? (a) : (b)) +# #define __fastcall __attribute__((__fastcall__)) +# #define FOO (23) +# #define __UINTMAX_TYPE__ long long unsigned int +# #define __UINTMAX_TYPE__ long long unsigned int +# #define __i386__ 1 + + FOREACH(nextLine ${_defineLines}) + STRING(REGEX MATCH "^#define +([A-Za-z_][A-Za-z0-9_]*)(\\([^\\)]+\\))? +(.+) *$" _dummy "${nextLine}") + SET(_name "${CMAKE_MATCH_1}${CMAKE_MATCH_2}") + STRING(STRIP "${CMAKE_MATCH_3}" _value) + #MESSAGE(STATUS "m1: -${CMAKE_MATCH_1}- m2: -${CMAKE_MATCH_2}- m3: -${CMAKE_MATCH_3}-") + + LIST(APPEND ${_resultDefines} "${_name}") + IF(_value) + LIST(APPEND ${_resultDefines} "${_value}") + ELSE() + LIST(APPEND ${_resultDefines} " ") + ENDIF() + ENDFOREACH(nextLine) + +ENDMACRO(_DETERMINE_GCC_SYSTEM_INCLUDE_DIRS _lang) + +# Save the current LC_ALL, LC_MESSAGES, and LANG environment variables and set them +# to "C" that way GCC's "search starts here" text is in English and we can grok it. +SET(_orig_lc_all $ENV{LC_ALL}) +SET(_orig_lc_messages $ENV{LC_MESSAGES}) +SET(_orig_lang $ENV{LANG}) + +SET(ENV{LC_ALL} C) +SET(ENV{LC_MESSAGES} C) +SET(ENV{LANG} C) + +# Now check for C, works for gcc and Intel compiler at least +IF (NOT CMAKE_EXTRA_GENERATOR_C_SYSTEM_INCLUDE_DIRS) + IF ("${CMAKE_C_COMPILER_ID}" MATCHES GNU OR "${CMAKE_C_COMPILER_ID}" MATCHES Intel) + _DETERMINE_GCC_SYSTEM_INCLUDE_DIRS(c _dirs _defines) + SET(CMAKE_EXTRA_GENERATOR_C_SYSTEM_INCLUDE_DIRS "${_dirs}" CACHE INTERNAL "C compiler system include directories") + SET(CMAKE_EXTRA_GENERATOR_C_SYSTEM_DEFINED_MACROS "${_defines}" CACHE INTERNAL "C compiler system defined macros") + ENDIF () +ENDIF () + +# And now the same for C++ +IF (NOT CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_INCLUDE_DIRS) + IF ("${CMAKE_CXX_COMPILER_ID}" MATCHES GNU OR "${CMAKE_CXX_COMPILER_ID}" MATCHES Intel) + _DETERMINE_GCC_SYSTEM_INCLUDE_DIRS(c++ _dirs _defines) + SET(CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_INCLUDE_DIRS "${_dirs}" CACHE INTERNAL "CXX compiler system include directories") + SET(CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_DEFINED_MACROS "${_defines}" CACHE INTERNAL "CXX compiler system defined macros") + ENDIF () +ENDIF () + +# Restore original LC_ALL, LC_MESSAGES, and LANG +SET(ENV{LC_ALL} ${_orig_lc_all}) +SET(ENV{LC_MESSAGES} ${_orig_lc_messages}) +SET(ENV{LANG} ${_orig_lang}) |