152 lines
4.5 KiB
CMake
152 lines
4.5 KiB
CMake
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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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# file Copyright.txt or https://cmake.org/licensing for details.
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function(_readFile file)
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include(${file})
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get_filename_component(name ${file} NAME_WE)
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string(REGEX REPLACE "-.*" "" CompilerId ${name})
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set(_compiler_id_version_compute_${CompilerId} ${_compiler_id_version_compute} PARENT_SCOPE)
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set(_compiler_id_simulate_${CompilerId} ${_compiler_id_simulate} PARENT_SCOPE)
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set(_compiler_id_pp_test_${CompilerId} ${_compiler_id_pp_test} PARENT_SCOPE)
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endfunction()
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function(compiler_id_detection outvar lang)
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if (NOT lang STREQUAL Fortran AND NOT lang STREQUAL CSharp)
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file(GLOB lang_files
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"${CMAKE_ROOT}/Modules/Compiler/*-DetermineCompiler.cmake")
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set(nonlang CXX)
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if (lang STREQUAL CXX)
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set(nonlang C)
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endif()
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file(GLOB nonlang_files
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"${CMAKE_ROOT}/Modules/Compiler/*-${nonlang}-DetermineCompiler.cmake")
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list(REMOVE_ITEM lang_files ${nonlang_files})
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endif()
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set(files ${lang_files})
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if (files)
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foreach(file ${files})
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_readFile(${file})
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endforeach()
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set(options ID_STRING VERSION_STRINGS ID_DEFINE PLATFORM_DEFAULT_COMPILER)
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set(oneValueArgs PREFIX)
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cmake_parse_arguments(CID "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
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if (CID_UNPARSED_ARGUMENTS)
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message(FATAL_ERROR "Unrecognized arguments: \"${CID_UNPARSED_ARGUMENTS}\"")
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endif()
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# Order is relevant here. For example, compilers which pretend to be
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# GCC must appear before the actual GCC.
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if (lang STREQUAL CXX)
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list(APPEND ordered_compilers
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Comeau
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)
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endif()
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list(APPEND ordered_compilers
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Intel
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PathScale
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Embarcadero
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Borland
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Watcom
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OpenWatcom
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SunPro
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HP
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Compaq
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zOS
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XLClang
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XL
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VisualAge
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PGI
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Cray
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TI
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Fujitsu
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GHS
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)
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if (lang STREQUAL C)
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list(APPEND ordered_compilers
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TinyCC
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Bruce
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)
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endif()
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list(APPEND ordered_compilers
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SCO
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ARMCC
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AppleClang
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ARMClang
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Clang
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GNU
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MSVC
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ADSP
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IAR
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)
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if (lang STREQUAL C)
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list(APPEND ordered_compilers
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SDCC
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)
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endif()
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if(lang STREQUAL CUDA)
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set(ordered_compilers NVIDIA Clang)
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endif()
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if(CID_ID_DEFINE)
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foreach(Id ${ordered_compilers})
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string(APPEND CMAKE_${lang}_COMPILER_ID_CONTENT "# define ${CID_PREFIX}COMPILER_IS_${Id} 0\n")
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endforeach()
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# Hard-code definitions for compilers that are no longer supported.
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string(APPEND CMAKE_${lang}_COMPILER_ID_CONTENT "# define ${CID_PREFIX}COMPILER_IS_MIPSpro 0\n")
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endif()
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set(pp_if "#if")
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if (CID_VERSION_STRINGS)
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string(APPEND CMAKE_${lang}_COMPILER_ID_CONTENT "\n/* Version number components: V=Version, R=Revision, P=Patch
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Version date components: YYYY=Year, MM=Month, DD=Day */\n")
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endif()
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foreach(Id ${ordered_compilers})
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if (NOT _compiler_id_pp_test_${Id})
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message(FATAL_ERROR "No preprocessor test for \"${Id}\"")
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endif()
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set(id_content "${pp_if} ${_compiler_id_pp_test_${Id}}\n")
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if (CID_ID_STRING)
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set(PREFIX ${CID_PREFIX})
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string(CONFIGURE "${_compiler_id_simulate_${Id}}" SIMULATE_BLOCK @ONLY)
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string(APPEND id_content "# define ${CID_PREFIX}COMPILER_ID \"${Id}\"${SIMULATE_BLOCK}")
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endif()
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if (CID_ID_DEFINE)
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string(APPEND id_content "# undef ${CID_PREFIX}COMPILER_IS_${Id}\n")
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string(APPEND id_content "# define ${CID_PREFIX}COMPILER_IS_${Id} 1\n")
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endif()
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if (CID_VERSION_STRINGS)
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set(PREFIX ${CID_PREFIX})
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set(MACRO_DEC DEC)
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set(MACRO_HEX HEX)
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string(CONFIGURE "${_compiler_id_version_compute_${Id}}" VERSION_BLOCK @ONLY)
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string(APPEND id_content "${VERSION_BLOCK}\n")
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endif()
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string(APPEND CMAKE_${lang}_COMPILER_ID_CONTENT "\n${id_content}")
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set(pp_if "#elif")
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endforeach()
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if (CID_PLATFORM_DEFAULT_COMPILER)
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set(platform_compiler_detection "
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/* These compilers are either not known or too old to define an
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identification macro. Try to identify the platform and guess that
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it is the native compiler. */
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#elif defined(__hpux) || defined(__hpua)
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# define ${CID_PREFIX}COMPILER_ID \"HP\"
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#else /* unknown compiler */
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# define ${CID_PREFIX}COMPILER_ID \"\"")
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endif()
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string(APPEND CMAKE_${lang}_COMPILER_ID_CONTENT "\n${platform_compiler_detection}\n#endif")
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endif()
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set(${outvar} ${CMAKE_${lang}_COMPILER_ID_CONTENT} PARENT_SCOPE)
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endfunction()
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