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Copy pathcpp_modules.cmake
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219 lines (200 loc) · 8.03 KB
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# Created by Basvas j.k.j <basvas@seznam.cz>
# https://github.com/basvas-jkj/cpp_modules
# Unlicensed <https://unlicense.org>
set(CMAKE_CXX_STANDARD 26)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
if (CMAKE_VERSION VERSION_LESS "3.30.0")
message(FATAL_ERROR "This version of CMake (${CMAKE_VERSION}) doesn't support 'import std'.")
elseif(DEFINED CMAKE_EXPERIMENTAL_CXX_IMPORT_STD)
message("Use custom value of CMAKE_EXPERIMENTAL_CXX_IMPORT_STD: ${CMAKE_EXPERIMENTAL_CXX_IMPORT_STD}.")
elseif(CMAKE_VERSION VERSION_LESS_EQUAL "3.31.7")
set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD "0e5b6991-d74f-4b3d-a41c-cf096e0b2508")
elseif(CMAKE_VERSION VERSION_LESS_EQUAL "3.31.11")
set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD "d0edc3af-4c50-42ea-a356-e2862fe7a444")
elseif(CMAKE_VERSION VERSION_LESS_EQUAL "4.0.2")
set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD "a9e1cf81-9932-4810-974b-6eccaf14e457")
elseif(CMAKE_VERSION VERSION_LESS_EQUAL "4.2.3")
set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD "d0edc3af-4c50-42ea-a356-e2862fe7a444")
elseif(CMAKE_VERSION VERSION_LESS_EQUAL "4.3.2")
set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD "451f2fe2-a8a2-47c3-bc32-94786d8fc91b")
else()
set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD "451f2fe2-a8a2-47c3-bc32-94786d8fc91b")
message(WARNING "Unknown version of CMake. (${CMAKE_VERSION})")
message(STATUS "Use default value of CMAKE_EXPERIMENTAL_CXX_IMPORT_STD. (${CMAKE_EXPERIMENTAL_CXX_IMPORT_STD})")
endif()
set(IS_VS OFF)
set(IS_NINJA OFF)
if(CMAKE_GENERATOR STREQUAL "Visual Studio 17 2022" OR CMAKE_GENERATOR STREQUAL "Visual Studio 18 2026")
set(IS_VS ON)
set(CXX_SCAN_FOR_MODULES OFF)
elseif(CMAKE_GENERATOR STREQUAL "Ninja" OR CMAKE_GENERATOR STREQUAL "Ninja Multi-Config")
set(IS_NINJA ON)
set(CMAKE_CXX_MODULE_STD ON)
set(CXX_SCAN_FOR_MODULES OFF)
else()
message(FATAL_ERROR "${CMAKE_GENERATOR} doesn't support C++ modules.'")
endif()
function("target_modules" target visibility)
target_sources(${target} ${visibility} FILE_SET CXX_MODULES TYPE CXX_MODULES FILES ${ARGN})
endfunction()
function("target_headers" target visibility)
target_sources(${target} ${visibility} FILE_SET HEADERS TYPE HEADERS FILES ${ARGN})
endfunction()
function("system_header_units" target visibility)
if(IS_VS)
return()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
message(WARNING "${CMAKE_GENERATOR} with ${CMAKE_CXX_COMPILER_ID} is not supported currently.")
endif()
foreach(header IN LISTS ARGN)
__init_header_pcm("${header}" pcm_path)
__init_target_name("${header}" header_unit_target)
__init_reference("${header}" "${pcm_path}" REFERENCE)
message("___${header} ${REFERENCE}")
__add_system_unit("${header_unit_target}" "${header}" "${pcm_path}")
add_dependencies(${target} "${header_unit_target}")
target_compile_options(${target} ${visibility} ${REFERENCE})
endforeach()
endfunction()
function("user_header_units" target visibility)
if(IS_VS)
return()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
message(WARNING "${CMAKE_GENERATOR} with ${CMAKE_CXX_COMPILER_ID} is not supported currently.")
endif()
foreach(header IN LISTS ARGN)
__init_header_pcm("${header}" pcm_path)
__init_target_name("${header}" header_unit_target)
__init_reference("${header}" "${pcm_path}" REFERENCE)
__add_user_unit("${header_unit_target}" "${header}" "${pcm_path}")
add_dependencies(${target} "${header_unit_target}")
target_compile_options(${target} ${visibility} ${REFERENCE})
endforeach()
endfunction()
function("vcpkg_header_units" target visibility)
if(IS_VS)
return()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
message(WARNING "${CMAKE_GENERATOR} with ${CMAKE_CXX_COMPILER_ID} is not supported currently.")
endif()
foreach(header IN LISTS ARGN)
__init_header_pcm("${header}" pcm_path)
__init_target_name("${header}" header_unit_target)
__init_reference("${header}" "${pcm_path}" REFERENCE)
__add_vcpkg_unit("${header_unit_target}" "${header}" "${pcm_path}")
add_dependencies(${target} "${header_unit_target}")
target_compile_options(${target} ${visibility} ${REFERENCE})
endforeach()
endfunction()
function(__add_system_unit header_unit_target header pcm_path)
if(IS_VS OR TARGET "${header_unit_target}")
return()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
message(WARNING "${CMAKE_GENERATOR} with ${CMAKE_CXX_COMPILER_ID} is not supported currently.")
endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(PARAMS
"-std=c++${CMAKE_CXX_STANDARD}"
"-xc++-system-header"
"--compile" "${header}"
"-o" "${pcm_path}"
)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set(PARAMS
"-std=c++${CMAKE_CXX_STANDARD}"
"-fmodules"
"-xc++-system-header"
"--compile" "${header}"
)
endif()
add_custom_command(
OUTPUT ${pcm_path}
COMMAND ${CMAKE_CXX_COMPILER} ${PARAMS}
COMMAND ${CMAKE_COMMAND} -E touch ${pcm_path}
VERBATIM
)
add_custom_target("${header_unit_target}" DEPENDS ${pcm_path})
endfunction()
function(__add_user_unit header_unit_target header pcm_path)
if(IS_VS OR TARGET "${header_unit_target}")
return()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
message(WARNING "${CMAKE_GENERATOR} with ${CMAKE_CXX_COMPILER_ID} is not supported currently.")
endif()
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(PARAMS
"-std=c++${CMAKE_CXX_STANDARD}"
"-xc++-user-header"
"--compile" "${CMAKE_CURRENT_SOURCE_DIR}/${header}"
"-o" "${pcm_path}"
)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set(relative "${CMAKE_CURRENT_SOURCE_DIR}/${header}")
cmake_path(RELATIVE_PATH relative BASE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
set(PARAMS
"-std=c++${CMAKE_CXX_STANDARD}"
"-fmodules"
"-xc++-user-header"
"--compile" "${relative}"
)
endif()
add_custom_command(
DEPENDS "${header}"
OUTPUT ${pcm_path}
COMMAND ${CMAKE_CXX_COMPILER} ${PARAMS}
COMMAND ${CMAKE_COMMAND} -E touch ${pcm_path}
VERBATIM
)
add_custom_target("${header_unit_target}" DEPENDS ${pcm_path})
endfunction()
function(__add_vcpkg_unit header_unit_target header pcm_path)
if(IS_VS OR TARGET "${header_unit_target}")
return()
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" OR CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
message(WARNING "${CMAKE_GENERATOR} with ${CMAKE_CXX_COMPILER_ID} is not supported currently.")
endif()
set(VCPKG_INCLUDE_PATH "${VCPKG_INSTALLED_DIR}/${VCPKG_TARGET_TRIPLET}/include")
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(PARAMS
"-std=c++${CMAKE_CXX_STANDARD}"
"-xc++-user-header"
"--compile" "${VCPKG_INCLUDE_PATH}/${header}"
"-I" "${VCPKG_INCLUDE_PATH}"
"-o" "${pcm_path}"
)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set(PARAMS
"-std=c++${CMAKE_CXX_STANDARD}"
"-fmodules"
"-xc++-user-header"
"--compile" "${header}"
)
endif()
add_custom_command(
DEPENDS "${VCPKG_INCLUDE_PATH}/${header}"
OUTPUT ${pcm_path}
COMMAND ${CMAKE_CXX_COMPILER} ${PARAMS}
COMMAND ${CMAKE_COMMAND} -E touch ${pcm_path}
VERBATIM
)
add_custom_target("${header_unit_target}" DEPENDS ${pcm_path})
endfunction()
function(__init_header_pcm header pcm)
set(${pcm} "${CMAKE_CURRENT_BINARY_DIR}/pcm_units/${header}.pcm" PARENT_SCOPE)
endfunction()
function(__init_target_name file_name target_name)
string(MD5 file_hash "${CMAKE_CURRENT_LIST_FILE}")
string(REGEX REPLACE "[^A-Za-z0-9_+\\-\\.]" "_" sanitised ${file_name})
set(${target_name} "${sanitised}_${file_hash}" PARENT_SCOPE)
endfunction()
function(__init_reference header pcm reference)
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(${reference} "-fmodule-file=${pcm}" PARENT_SCOPE)
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
#g++ -fmodules unit.hpp main.cpp
set(${reference} "-fmodules" "-include" "${header}" PARENT_SCOPE)
else()
message(WARNING "${CMAKE_GENERATOR} with ${CMAKE_CXX_COMPILER_ID} is not supported currently.")
endif()
endfunction()