158 lines
6.7 KiB
CMake
Executable file
158 lines
6.7 KiB
CMake
Executable file
cmake_minimum_required(VERSION 3.20)
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set(VCPKG_LANGUAGES "C;CXX" CACHE STRING "Languages to enables for this project")
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set(OUTPUT_STRING)
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# Build default checklists
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_CROSSCOMPILING
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CMAKE_SYSTEM_NAME
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CMAKE_HOST_SYSTEM_NAME
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CMAKE_SYSTEM_PROCESSOR
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CMAKE_HOST_SYSTEM_PROCESSOR)
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if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_OSX_DEPLOYMENT_TARGET
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CMAKE_OSX_SYSROOT)
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endif()
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# Programs to check
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set(PROGLIST AR RANLIB STRIP NM OBJDUMP DLLTOOL MT LINKER)
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foreach(prog IN LISTS PROGLIST)
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${prog})
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endforeach()
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set(COMPILERS ${VCPKG_LANGUAGES} RC)
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foreach(prog IN LISTS COMPILERS)
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${prog}_COMPILER CMAKE_${prog}_COMPILER_ID)
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endforeach()
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# Variables to check
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foreach(_lang IN LISTS VCPKG_LANGUAGES)
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_STANDARD_INCLUDE_DIRECTORIES)
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_STANDARD_LIBRARIES)
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_STANDARD)
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_COMPILE_FEATURES)
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_EXTENSION)
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list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES)
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# Probably never required since implicit.
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#list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES)
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#list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_IMPLICIT_INCLUDE_DIRECTORIES)
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#list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_IMPLICIT_LINK_DIRECTORIES)
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#list(APPEND VCPKG_DEFAULT_VARS_TO_CHECK CMAKE_${_lang}_IMPLICIT_LINK_LIBRARIES)
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endforeach()
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list(REMOVE_DUPLICATES VCPKG_DEFAULT_VARS_TO_CHECK)
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# Environment variables to check.
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list(APPEND VCPKG_DEFAULT_ENV_VARS_TO_CHECK PATH INCLUDE C_INCLUDE_PATH CPLUS_INCLUDE_PATH LIB LIBPATH LIBRARY_PATH LD_LIBRARY_PATH)
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list(REMOVE_DUPLICATES VCPKG_DEFAULT_ENV_VARS_TO_CHECK)
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#Flags to check. Flags are a bit special since they are configuration aware.
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set(FLAGS ${VCPKG_LANGUAGES} RC SHARED_LINKER STATIC_LINKER EXE_LINKER)
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foreach(flag IN LISTS FLAGS)
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list(APPEND VCPKG_DEFAULT_FLAGS_TO_CHECK CMAKE_${flag}_FLAGS)
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endforeach()
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list(REMOVE_DUPLICATES VCPKG_DEFAULT_FLAGS_TO_CHECK)
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#Language-specific flags.
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foreach(_lang IN LISTS VCPKG_LANGUAGES)
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list(APPEND VCPKG_LANG_FLAGS CMAKE_${_lang}_FLAGS)
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endforeach()
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list(REMOVE_DUPLICATES VCPKG_LANG_FLAGS)
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# TODO if ever necessary: Properties to check
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set(VCPKG_VAR_PREFIX "VCPKG_DETECTED" CACHE STRING "Variable prefix to use for detected flags")
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set(VCPKG_VARS_TO_CHECK "${VCPKG_DEFAULT_VARS_TO_CHECK}" CACHE STRING "Variables to check. If not given there is a list of defaults")
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set(VCPKG_FLAGS_TO_CHECK "${VCPKG_DEFAULT_FLAGS_TO_CHECK}" CACHE STRING "Variables to check. If not given there is a list of defaults")
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set(VCPKG_ENV_VARS_TO_CHECK "${VCPKG_DEFAULT_ENV_VARS_TO_CHECK}" CACHE STRING "Variables to check. If not given there is a list of defaults")
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if(NOT VCPKG_OUTPUT_FILE)
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message(FATAL_ERROR "VCPKG_OUTPUT_FILE is required to be defined")
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endif()
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if(NOT CMAKE_BUILD_TYPE)
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message(FATAL_ERROR "CMAKE_BUILD_TYPE is required to be defined")
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else()
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string(TOUPPER "${CMAKE_BUILD_TYPE}" VCPKG_CONFIGS)
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endif()
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project(get_cmake_vars LANGUAGES ${VCPKG_LANGUAGES})
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foreach(VAR IN LISTS VCPKG_VARS_TO_CHECK)
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string(APPEND OUTPUT_STRING "set(${VCPKG_VAR_PREFIX}_${VAR} \"${${VAR}}\")\n")
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endforeach()
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foreach(_env IN LISTS VCPKG_ENV_VARS_TO_CHECK)
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if(CMAKE_HOST_WIN32)
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string(REPLACE "\\" "/" ENV_${_env} "$ENV{${_env}}")
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string(APPEND OUTPUT_STRING "set(${VCPKG_VAR_PREFIX}_ENV_${_env} \"${ENV_${_env}}\")\n")
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else()
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string(APPEND OUTPUT_STRING "set(${VCPKG_VAR_PREFIX}_ENV_${_env} \"$ENV{${_env}}\")\n")
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endif()
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endforeach()
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macro(_vcpkg_adjust_flags flag_var)
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if(MSVC) # Transform MSVC /flags to -flags due to bash scripts intepreting /flag as a path.
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string(REGEX REPLACE "(^| )/" "\\1-" ${flag_var} "${${flag_var}}")
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if(CMAKE_SYSTEM_NAME STREQUAL "WindowsStore")
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if("${flag_var}" STREQUAL "CMAKE_CXX_FLAGS")
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string(APPEND ${flag_var} " -ZW:nostdlib")
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endif()
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endif()
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endif()
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if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
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if("${flag_var}" IN_LIST VCPKG_LANG_FLAGS)
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# macOS - append arch and isysroot if cross-compiling
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if(NOT "${CMAKE_OSX_ARCHITECTURES}" STREQUAL "${CMAKE_HOST_SYSTEM_PROCESSOR}")
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foreach(arch IN LISTS CMAKE_OSX_ARCHITECTURES)
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string(APPEND ${flag_var} " -arch ${arch}")
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endforeach()
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endif()
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string(APPEND ${flag_var} " -isysroot ${CMAKE_OSX_SYSROOT}")
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if (CMAKE_OSX_DEPLOYMENT_TARGET)
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string(APPEND ${flag_var} " -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
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endif()
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endif()
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endif()
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endmacro()
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foreach(flag IN LISTS VCPKG_FLAGS_TO_CHECK)
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string(STRIP "${${flag}}" ${flag}) # Strip leading and trailing whitespaces
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_vcpkg_adjust_flags(${flag})
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string(REPLACE [[\\]] [[\]] ${flag} "${${flag}}")
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string(APPEND OUTPUT_STRING "set(${VCPKG_VAR_PREFIX}_RAW_${flag} \" ${${flag}}\")\n")
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foreach(config IN LISTS VCPKG_CONFIGS)
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string(STRIP "${${flag}_${config}}" ${flag}_${config})
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_vcpkg_adjust_flags(${flag}_${config})
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string(APPEND OUTPUT_STRING "set(${VCPKG_VAR_PREFIX}_RAW_${flag}_${config} \"${CMAKE_${flag}_FLAGS_${config}}\")\n")
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set(COMBINED_${flag}_${config} "${${flag}} ${${flag}_${config}}")
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string(STRIP "${COMBINED_${flag}_${config}}" COMBINED_${flag}_${config})
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string(APPEND OUTPUT_STRING "set(${VCPKG_VAR_PREFIX}_${flag}_${config} \"${COMBINED_${flag}_${config}}\")\n")
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endforeach()
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endforeach()
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file(WRITE "${VCPKG_OUTPUT_FILE}" "${OUTPUT_STRING}")
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# Programs:
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# CMAKE_AR
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# CMAKE_<LANG>_COMPILER_AR (Wrapper)
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# CMAKE_RANLIB
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# CMAKE_<LANG>_COMPILER_RANLIB
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# CMAKE_STRIP
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# CMAKE_NM
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# CMAKE_OBJDUMP
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# CMAKE_DLLTOOL
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# CMAKE_MT
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# CMAKE_LINKER
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# CMAKE_C_COMPILER
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# CMAKE_CXX_COMPILER
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# CMAKE_RC_COMPILER
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# Flags:
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# CMAKE_<LANG>_FLAGS
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# CMAKE_<LANG>_FLAGS_<CONFIG>
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# CMAKE_RC_FLAGS
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# CMAKE_SHARED_LINKER_FLAGS
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# CMAKE_STATIC_LINKER_FLAGS
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# CMAKE_STATIC_LINKER_FLAGS_<CONFIG>
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# CMAKE_EXE_LINKER_FLAGS
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# CMAKE_EXE_LINKER_FLAGS_<CONFIG>
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