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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
function(qt_update_precompiled_header target precompiled_header)
if (precompiled_header AND BUILD_WITH_PCH)
set_property(TARGET "${target}" APPEND PROPERTY "PRECOMPILE_HEADERS" "$<$<COMPILE_LANGUAGE:CXX,OBJCXX>:${precompiled_header}>")
endif()
endfunction()
function(qt_update_precompiled_header_with_library target library)
if(NOT TARGET "${library}")
return()
endif()
get_target_property(target_type "${library}" TYPE)
if(target_type STREQUAL "INTERFACE_LIBRARY")
return()
endif()
get_target_property(header_file_path "${library}" MODULE_HEADER)
if(NOT header_file_path)
# The Qt module is imported from the Qt installation prefix.
# Calculate the module header location.
get_target_property(include_name "${library}" _qt_module_include_name)
if(NOT include_name)
message(DEBUG "Property _qt_module_include_name is not set on ${library}.")
return()
endif()
get_target_property(relative_include_dir "${library}" _qt_module_relative_include_dir)
if(NOT relative_include_dir)
message(DEBUG "Property _qt_module_relative_include_dir is not set on ${library}.")
return()
endif()
get_target_property(package_name ${library} _qt_package_name)
if(NOT package_name)
message(DEBUG "No package name found for ${library}.")
return()
endif()
set(package_location "${${package_name}_DIR}")
get_filename_component(absolute_include_dir
"${package_location}/${relative_include_dir}"
ABSOLUTE
)
set(header_file_path "${absolute_include_dir}/${include_name}")
if(NOT EXISTS "${header_file_path}")
message(DEBUG "Module header '${header_file_path}' does not exist.")
return()
endif()
endif()
qt_update_precompiled_header("${target}" "${header_file_path}")
endfunction()
function(qt_update_ignore_pch_source target sources)
if (sources)
set_source_files_properties(${sources} PROPERTIES
SKIP_PRECOMPILE_HEADERS ON
SKIP_UNITY_BUILD_INCLUSION ON)
endif()
endfunction()
function(qt_ignore_pch_obj_c_sources target sources)
# No obj-cxx PCH support for versions lower than 3.16.
if(CMAKE_VERSION VERSION_LESS 3.16.0)
list(FILTER sources INCLUDE REGEX "\\.mm$")
qt_update_ignore_pch_source("${target}" "${sources}")
endif()
endfunction()
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