qt5base-lts/config.tests/static_link_order/CMakeLists.txt

# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause

# The test represents the order-related issue that we have with the ld linker.
#
# CMake versions < 3.21.0 produce the following linker line:
# <binary_name> main.cpp -o static_link_order_test libstaticLib.a objlib.cpp.o
# Since 'static_link_order_test' doesn't have direct use of 'staticlib2.cpp.o' symbols
# the translation unit is not linked. When we link objlib.cpp.o it cannot resolve symbols from
# staticlib2.cpp.o.
#
# For now it's only applicable for ld-like linkers. 'lld' has no such issue.
cmake_minimum_required(VERSION 3.16)

project(static_link_order_test LANGUAGES CXX)

add_library(objLib OBJECT objlib.cpp)
add_library(staticLib STATIC staticlib1.cpp staticlib2.cpp)

target_link_libraries(staticLib
    INTERFACE objLib "$<TARGET_OBJECTS:objLib>"
)

add_executable(static_link_order_test main.cpp)
target_link_libraries(static_link_order_test PRIVATE staticLib)
Add license headers to cmake files CMakeLists.txt and .cmake files of significant size (more than 2 lines according to our check in tst_license.pl) now have the copyright and license header. Existing copyright statements remain intact Task-number: QTBUG-88621 Change-Id: I3b98cdc55ead806ec81ce09af9271f9b95af97fa Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io> 2022-07-05 11:26:52 +00:00			`# Copyright (C) 2022 The Qt Company Ltd.`
Change the license of all CMakeLists.txt and *.cmake files to BSD Task-number: QTBUG-105718 Change-Id: I5d3ef70a31235868b9be6cb479b7621bf2a8ba39 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io> 2022-08-19 13:21:34 +00:00			`# SPDX-License-Identifier: BSD-3-Clause`
Add license headers to cmake files CMakeLists.txt and .cmake files of significant size (more than 2 lines according to our check in tst_license.pl) now have the copyright and license header. Existing copyright statements remain intact Task-number: QTBUG-88621 Change-Id: I3b98cdc55ead806ec81ce09af9271f9b95af97fa Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io> 2022-07-05 11:26:52 +00:00
Add the check for linker capabilities to resolve circular dependencies 'ld' only capable to resolve circular dependencies by wrapping the suspected static libraries and objects using --start/end-group arguments. We want to detect if linker is 'ld' at configure time to decide how to link the resource objects if finalizers are not enabled. The qt_config_compile_test function is extended with an extra argument since it's required to pass custom cmake flags to the ld-related test. Pick-to: 6.2 Change-Id: I484fcc99e2886952d8b0232f37e4e6a35d072931 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> 2021-06-03 11:51:48 +00:00			`# The test represents the order-related issue that we have with the ld linker.`
			`#`
			`# CMake versions < 3.21.0 produce the following linker line:`
			`# <binary_name> main.cpp -o static_link_order_test libstaticLib.a objlib.cpp.o`
			`# Since 'static_link_order_test' doesn't have direct use of 'staticlib2.cpp.o' symbols`
			`# the translation unit is not linked. When we link objlib.cpp.o it cannot resolve symbols from`
			`# staticlib2.cpp.o.`
			`#`
			`# For now it's only applicable for ld-like linkers. 'lld' has no such issue.`
CMake: Bump almost all cmake_minimum_required calls to 3.16 Needed for subsequent change that will check and error out if the version is lower than 3.16. We do that to ensure all policies introduced by CMake up to version 3.16 have their behavior set to NEW. Pick-to: 6.2 Task-number: QTBUG-95018 Change-Id: Ieaf82c10987dd797d86a3fd4a986a67e72de486a Reviewed-by: Kai Koehne <kai.koehne@qt.io> 2021-09-22 13:11:47 +00:00			`cmake_minimum_required(VERSION 3.16)`
Add the check for linker capabilities to resolve circular dependencies 'ld' only capable to resolve circular dependencies by wrapping the suspected static libraries and objects using --start/end-group arguments. We want to detect if linker is 'ld' at configure time to decide how to link the resource objects if finalizers are not enabled. The qt_config_compile_test function is extended with an extra argument since it's required to pass custom cmake flags to the ld-related test. Pick-to: 6.2 Change-Id: I484fcc99e2886952d8b0232f37e4e6a35d072931 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io> 2021-06-03 11:51:48 +00:00
			`project(static_link_order_test LANGUAGES CXX)`

			`add_library(objLib OBJECT objlib.cpp)`
			`add_library(staticLib STATIC staticlib1.cpp staticlib2.cpp)`

			`target_link_libraries(staticLib`
			`INTERFACE objLib "$<TARGET_OBJECTS:objLib>"`
			`)`

			`add_executable(static_link_order_test main.cpp)`
			`target_link_libraries(static_link_order_test PRIVATE staticLib)`