qt5base-lts/cmake/QtUnityBuildHelpers.cmake

# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause

# Check whether no unity build is requested where it is disabled by default.
function(_qt_internal_validate_no_unity_build prefix)
    if(${prefix}_NO_UNITY_BUILD OR ${prefix}_NO_UNITY_BUILD_SOURCES)
        message(WARNING
            "Unity build is disabled by default for this target, and its sources. "
            "You may remove the NO_UNITY_BUILD and/or NO_UNITY_BUILD_SOURCES arguments.")
    endif()
endfunction()

function(qt_update_ignore_unity_build_sources target sources)
    if (sources)
        set_source_files_properties(${sources} PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
    endif()
endfunction()
Add some utilities for UNITY_BUILD - The following commands accepts NO_UNITY_BUILD, and NO_UNITY_BUILD_SOURCES arguments to opt out of the unity build, and to exclude some source files from unity build, respectively. - qt_internal_add_executable - qt_internal_add_module - qt_internal_add_plugin - qt_internal_add_tool - qt_internal_extend_target - qt_internal_add_common_qt_library_helper - qt_internal_add_cmake_library - qt_internal_add_simd_part - Unity build is disabled by default in these: - qt_internal_add_test - qt_internal_add_test_helper - qt_internal_add_benchmark - qt_internal_add_3rdparty_library - qt_update_ignore_pch_source also excludes the files from unity_build Pick-to: 6.5 Task-number: QTBUG-109394 Change-Id: I5d0e7df633738310a015142a6c73fbb78b6c3467 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> 2023-01-31 13:05:16 +00:00			`# Copyright (C) 2023 The Qt Company Ltd.`
			`# SPDX-License-Identifier: BSD-3-Clause`

Improve the internal handling of unity build - Removed the NO_UNITY_BUILD argument from commands that disable it by default. - Add a warning in case NO_UNITY_BUILD or NO_UNITY_BUILD_SOURCES is being used where it is already disabled, e.g., qt_internal_add_test - Exclude all sources of a target from unity build if NO_UNITY_BUILD is set on the target. This sounds a bit harsh, but I have noticed that sometimes the same source file can be included somewhere else, and some unexpected collision may occur. - qt_examples_build_end excludes all its examples from the unity build. - qt_build_test now sets the CMAKE_UNITY_BUILD to OFF before configuring the tests, and restore its value when done. Pick-to: 6.5 Task-number: QTBUG-109394 Change-Id: Ia42e7dd5a5bfb151db241deb639325720fd91eec Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> 2023-03-09 13:53:14 +00:00			`# Check whether no unity build is requested where it is disabled by default.`
			`function(_qt_internal_validate_no_unity_build prefix)`
			`if(${prefix}_NO_UNITY_BUILD OR ${prefix}_NO_UNITY_BUILD_SOURCES)`
			`message(WARNING`
			`"Unity build is disabled by default for this target, and its sources. "`
			`"You may remove the NO_UNITY_BUILD and/or NO_UNITY_BUILD_SOURCES arguments.")`
			`endif()`
			`endfunction()`

Add some utilities for UNITY_BUILD - The following commands accepts NO_UNITY_BUILD, and NO_UNITY_BUILD_SOURCES arguments to opt out of the unity build, and to exclude some source files from unity build, respectively. - qt_internal_add_executable - qt_internal_add_module - qt_internal_add_plugin - qt_internal_add_tool - qt_internal_extend_target - qt_internal_add_common_qt_library_helper - qt_internal_add_cmake_library - qt_internal_add_simd_part - Unity build is disabled by default in these: - qt_internal_add_test - qt_internal_add_test_helper - qt_internal_add_benchmark - qt_internal_add_3rdparty_library - qt_update_ignore_pch_source also excludes the files from unity_build Pick-to: 6.5 Task-number: QTBUG-109394 Change-Id: I5d0e7df633738310a015142a6c73fbb78b6c3467 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> 2023-01-31 13:05:16 +00:00			`function(qt_update_ignore_unity_build_sources target sources)`
			`if (sources)`
			`set_source_files_properties(${sources} PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)`
			`endif()`
			`endfunction()`