diff options
Diffstat (limited to 'share/cmake-3.10/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake')
| -rw-r--r-- | share/cmake-3.10/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/share/cmake-3.10/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake b/share/cmake-3.10/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake new file mode 100644 index 0000000..3a72622 --- /dev/null +++ b/share/cmake-3.10/Modules/CMakeExtraGeneratorDetermineCompilerMacrosAndIncludeDirs.cmake @@ -0,0 +1,113 @@ +# Distributed under the OSI-approved BSD 3-Clause License. See accompanying +# file Copyright.txt or https://cmake.org/licensing for details. + + +# 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 "${CMAKE_CXX_COMPILER_ARG1}") + + if (CMAKE_CXX_FLAGS MATCHES "(-stdlib=[^ ]+)") + set(_stdlib "${CMAKE_MATCH_1}") + endif () + if (CMAKE_CXX_FLAGS MATCHES "(-std=[^ ]+)") + set(_stdver "${CMAKE_MATCH_1}") + endif () + else () + set(_compilerExecutable "${CMAKE_C_COMPILER}") + set(_arg1 "${CMAKE_C_COMPILER_ARG1}") + endif () + execute_process(COMMAND ${_compilerExecutable} ${_arg1} ${_stdver} ${_stdlib} -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 ${_includeLines}) + # on OSX, gcc says things like this: "/System/Library/Frameworks (framework directory)", strip the last part + string(REGEX REPLACE "\\(framework directory\\)" "" nextLineNoFramework "${nextLine}") + # strip spaces at the beginning and the end + string(STRIP "${nextLineNoFramework}" _includePath) + list(APPEND ${_resultIncludeDirs} "${_includePath}") + endforeach() + + 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() + +endmacro() + +# 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 $ENV{LANG}) + +set(ENV{LC_ALL} C) +set(ENV{LC_MESSAGES} C) +set(ENV{LANG} C) + +# Now check for C, works for gcc and Intel compiler at least +if (NOT CMAKE_EXTRA_GENERATOR_C_SYSTEM_INCLUDE_DIRS) + if (CMAKE_C_COMPILER_ID MATCHES GNU OR CMAKE_C_COMPILER_ID MATCHES Intel OR CMAKE_C_COMPILER_ID MATCHES Clang) + _DETERMINE_GCC_SYSTEM_INCLUDE_DIRS(c _dirs _defines) + set(CMAKE_EXTRA_GENERATOR_C_SYSTEM_INCLUDE_DIRS "${_dirs}" CACHE INTERNAL "C compiler system include directories") + set(CMAKE_EXTRA_GENERATOR_C_SYSTEM_DEFINED_MACROS "${_defines}" CACHE INTERNAL "C compiler system defined macros") + elseif ("${CMAKE_C_COMPILER_ID}" MATCHES MSVC) + set(CMAKE_EXTRA_GENERATOR_C_SYSTEM_INCLUDE_DIRS "$ENV{INCLUDE}" CACHE INTERNAL "C compiler system include directories") + endif () +endif () + +# And now the same for C++ +if (NOT CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_INCLUDE_DIRS) + if ("${CMAKE_CXX_COMPILER_ID}" MATCHES GNU OR "${CMAKE_CXX_COMPILER_ID}" MATCHES Intel OR "${CMAKE_CXX_COMPILER_ID}" MATCHES Clang) + _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") + elseif ("${CMAKE_CXX_COMPILER_ID}" MATCHES MSVC) + set(CMAKE_EXTRA_GENERATOR_CXX_SYSTEM_INCLUDE_DIRS "$ENV{INCLUDE}" CACHE INTERNAL "CXX compiler system include directories") + 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}) |