By default, when using the Qt6 CMake package to look for components,
the find_package() calls for the components use NO_DEFAULT_PATH to
ensure that CMake doesn't accidentally find system (distro) packages.
Instead we limit the paths to one level up from where the Qt6 package
is.
Unfortunately that doesn't quite work for finding Qt packages that
might have been installed into a different prefix than where the main
Qt prefix is.
This happens when Qt addons are built by Conan, and installed into
a separate prefix.
To allow calls like find_package(Qt6 COMPONENTS ConanAddon) to work
in a scenario as described above, introduce a new variable called
QT_ADDITIONAL_PACKAGES_PREFIX_PATH which can be used to specify
additional paths where Qt CMake packages should be found.
This is similar to previously introduced QT_EXAMPLES_CMAKE_PREFIX_PATH
variable which was meant for a similar case, but only for examples.
Additionally, allow disabling the NO_DEFAULT_PATH option by setting
the QT_DISABLE_NO_DEFAULT_PATH_IN_QT_PACKAGES cache variable to TRUE.
This would allow regular usage of CMAKE_PREFIX_PATH to work, at the
risk that system Qt CMake packages might be found.
Augments 5cd4001bf2
and ffe0889413.
Fixes: QTBUG-86882
Change-Id: Ia8e060cbba6d2a10c3d63d81892f2c71e4236a9a
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
This reverts commit b0c51f86f4.
The build failure caused by 58c1c6ee5c has
been fixed.
Change-Id: Ic7458d54c7a874588e8b1bfeca61df1842763656
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This reverts commit 6e1a570dc8.
The build failure caused by 58c1c6ee5c has
been fixed.
Change-Id: I67acaa2d1dd5fc88c205b054252be2e6e26898c7
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
...and fix the build errors the original change caused.
This reverts commit 127fb8bb55.
Change-Id: I4006b32734a51c5d101dd73c957f81d2a0f84ba1
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This reverts commit 58c1c6ee5c.
This lead to configuration errors on some machines, blocking
development.
Change-Id: I744f6cc95fbaa273519ab8fc8fb492b87f5729b8
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This reverts commit a3cb002511.
This lead to configuration errors on some machines, blocking
development.
Change-Id: Ibb785c96c7d85692a6e22a73e086119eb571df71
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This reverts commit 3685483c4b.
This lead to configuration errors on some machines, blocking
development.
Change-Id: I309cdd55a8ef64899afcbeca54458d1c6d686951
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Every public dependency of a Qt module results in a find_package call in
the consuming project. But not all public dependencies are mandatory.
For example, vulkan is only needed if the user project actually uses Qt
classes that pull in vulkan headers.
This patch adds the option MARK_OPTIONAL to qt_find_package.
Dependencies that are marked as optional will not produce an error on
find failure.
Task-number: QTBUG-86421
Change-Id: Ia767e7f36991e236582c7509cbd37ea3487bb695
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
...in code. The actual number of calls at runtime does not change.
The reason for this stunt is that we want to replace find_dependency
with find_package at runtime for optional dependencies, and this will
reduce the diff size of the next commit.
Change-Id: I304fdf09c69fea7b6d4adabf515712eb097f8c86
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
The find_dependency() macro calls return() on failure, meaning any code
after it will be ignored, thus checking any XXX_FOUND variables after
find_dependency() is pointless.
Fix the places where we use find_dependency() and set the "failed" state
before the call and the "success" state afterwards.
Change-Id: Ia5239c704f02a9bec972210374ffed7808b14055
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Our initial approach to looking for host Qt tools when cross-compiling
to a platform with a different architecture bitness compared to the
host one was to unset CMAKE_SIZEOF_VOID_P before calling
find_package(Qt6FooTools) and then restoring the value.
That works to bypass the architecture bitness test in the
ConfigVersion files, but it also influences the paths that
find_package() searches in, specifically the lib<arch> paths like
/usr/lib64 will not be searched in.
Fortunately since CMake 3.14, write_basic_package_version_file() can
take an additional ARCH_INDEPENDENT parameter. This disables the
architecture bitness test when looking for the package, while allowing
to still search in the /usr/lib64 like paths.
Use it when creating the QtFooToolConfigVersion.cmake files.
One could argue we should actually check if the tool executables could
run on the host system where find_package is called for
cross-compilation.
We could do that in another change if the problem ever arises.
Amends 03aa74e40d
Amends 914b367c7f
Change-Id: I1181ff637ac80064a6a8538170b28a41743fc90c
Fixes: QTBUG-81672
Reviewed-by: Christophe Giboudeaux <christophe@krop.fr>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
While trying to implement the 'host artifact reuse' Coin instructions
change, a bug surfaced where the qemu configurations didn't find
the host tools and instead tried to use the cross-compiled tools
while building qtbase, which failed due to not finding the
runtime linker (another unsolved issue).
Before the host artifact reuse change, the host tools were found
successfully.
The difference that caused the issue is that the target install prefix
was a direct subfolder of the host prefix.
host - /home/qt/work/qt/install
target - /home/qt/work/qt/install/target
Before the host reuse change the install prefixes were as follows
host - /home/qt/work/qt/install/host
target - /home/qt/work/qt/install/target
While looking for the Qt6CoreTools package, we temporarily set
CMAKE_FIND_ROOT_PATH and CMAKE_PREFIX_PATH to contain first
'/home/qt/work/qt/install' and then '/home/qt/work/qt/install/target'.
CMake then reroots the CMAKE_PREFIX_PATH values onto values in
CMAKE_FIND_ROOT_PATH, making an MxN list of prefixes to search.
Rerooting essentially means concatenating 2 paths, unless the
considered prefix is a subfolder of the root path.
What happened was that the first considered value was
'/home/qt/work/qt/install/home/qt/work/qt/install', a non-existent
location that gets discarded.
The second considered value was '/home/qt/work/qt/install/target.
The second value is the result of seeing that
'/home/qt/work/qt/install/target' is a subfolder of
'/home/qt/work/qt/install' and thus the root path is stripped.
All of this is done in cmFindPackageCommand::FindConfig() ->
cmFindCommon::RerootPaths.
The behavior above caused the target tools be found instead of the
host ones.
Before the host reuse change, both of the initial constructed prefixes
were discared due to them not existing, e.g.
'/home/qt/work/qt/install/target/home/qt/work/qt/install/target'
and '/home/qt/work/qt/install/host/home/qt/work/qt/install/host'
One of the later prefixes combined CMAKE_FIND_ROOT_PATH ==
'/home/qt/work/qt/install/host' + CMAKE_PREFIX_PATH == '/' resulting
in '/home/qt/work/qt/install/host/' and this accidentally found the
host tools package.
We actually stumbled upon this issue a while ago when implementing Qt
5.14 Android CMake support in 52c799ed44
That commit message mentions the fix is to add a "lib/cmake"
suffix to the PATHS option of find_package().
This would cause the subfolder => strip root behavior mentioned
above.
So finally the fix.
First, make sure not to append QT_HOST_PATH in the toolchain file,
there shouldn't be any need to do that, give that we temporarily set
it when looking for Tools packages.
Second, recreate the subdir scenario in the Qt toolchain file by
setting CMAKE_FIND_ROOT_PATH to the current (relocated) install
prefix as usual, but also setting CMAKE_PREFIX_PATH to a new value
poining to the CMake directory.
Aka '/home/alex/qt' and '/home/alex/qt/lib/cmake'.
Third, when a QT_HOST_PATH is given, save 2 paths in the generated Qt
toolchain: QT_HOST_PATH and QT_HOST_PATH_CMAKE_DIR. There are the host
equivalents of the target ones above. Use these values when looking
for host tools in Qt6CoreModuleDependencies.cmake, again facilitaing
the subdir behavior.
Note these are currently absolute paths and are not relocatable.
We'll have to figure out if it's even possible to make the host path
relocatable.
Finally as a cleanup, look for the Qt6HostInfo package in QtSetup
strictly in the given QT_HOST_PATH, so CMake doesn't accidentally find
a system Qt package.
Change-Id: Iefbcfbbcedd35f1c33417ab7e9f44eaf35ff6337
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
This change provides the following per-module variables
Qt6Widgets_LIBRARIES, Qt6Widgets_INCLUDE_DIRS, Qt6Widgets_DEFINITIONS,
Qt6Widgets_COMPILE_DEFINITIONS, Qt6Widgets_PRIVATE_INCLUDE_DIRS.
These are deprecated and are only intended for easier porting from
Qt5 to Qt6. Qt consumers should instead rely on the Qt module targets
e.g target_link_libraries(app PRIVATE Qt6::Widgets)
Note that the variable contents includes transitive values for
everything except the _LIBRARIES variant. So Qt6Widgets_INCLUDE_DIRS
will contain values for Widgets, Gui and Core.
Qt6Widgets_LIBRARIES only contains a value like Qt6::Widgets, and when
that is used in target_link_libraries(), CMake will take care of the
transitivity.
Change-Id: I625e25aab7ba5eaf14de1dc76ba2a1a0c85e6226
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Each module package needs to first find the Qt6 package to ensure
that all the necessary info is setup for further depedencies to be
found.
Task-number: QTBUG-81672
Change-Id: I3ee608d24c1efbb63a063261fb36341bf52fb78d
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
This patch allows tools to be built for the target platform when the
QT_BUILD_TOOLS_WHEN_CROSSCOMPILING parameter is set at configuration
time.
To avoid naming conflicts, the target tools are suffixed with "_native".
The qt_get_tool_target_name() function can be used to get the tool name
for both scenarios (cross and non-cross compilation).
Extend pro2cmake to refer to the right target name for tools.
The relevant write_XXX functions have a new target_ref parameter that
will be "${target_name}" for tools and literally the target name for
everything else.
Fixes: QTBUG-81901
Change-Id: If4efbc1fae07a4a3a044dd09c9c06be6d517825e
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
During a static build we need to use the find modules
in 3rdparty/extra-cmake-modules/find-modules when generating a
ModuleDependencies file, so that the generated find_dependency()
calls succeed. This means that the files have to be shipped with
Qt6 package, making them pseudo public API.
There is also a need to use these files when building QtWayland.
Instead of setting / unsetting CMAKE_MODULE_PATH only in module
and plugin Dependencies cmake files, just set them once when finding
Qt6.
This will allow QtWayland and QtX11Extras to easily find the required
third party packages, without having to hardcode the paths in multiple
repos.
Change-Id: I750d0421a269e5632afa1bb62498c2501d73cdb1
Reviewed-by: Qt CMake Build Bot
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
To build examples as part of a non-installed Qt prefix build,
not-yet-installed Config files need to be found by find_package()
calls inside example projects.
Facilitate that by propagating the CMAKE_PREFIX_PATH and
QT_EXAMPLES_CMAKE_PREFIX_PATH paths in all relevant find_package()
calls where NO_DEFAULT_PATH is used.
Also adjust the inclusion of the QtFeature.cmake file to be relative
to the qt6 directory, rather than the current list directory.
This is needed to successfully find the file when parsing a Config
file from a non-installed build directory.
Change-Id: I36031279628f1f7741d8f4d7571484a6545227f7
Reviewed-by: Qt CMake Build Bot
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
For ICU we have multiple components, and ICU becomes a public dependency
to QtCore.
When storing the INTERFACE_QT_PACKAGE_COMPONENTS property, make sure to
store the entire list of components, not just the first component -- by
turning the semi-colon separated list into a space separated list.
When processing the components at find_dependency time, we need to
reverse that and pass COMPONENTS directly to ensure a correct parameter
expansion.
Change-Id: I24a0708520e7d5fba039395a151034aee4d4c0e2
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
When the host system uses 64-bits for pointers and the target 32-bits,
then locating the tools dependencies would fail due to the mismatch.
Since the tools dependencies don't create linkable targets but merely
import executables, we can skip this check like in commit
914b367c7f.
Change-Id: I1ebd0867e4cce34f42df21dc8e8d9176a83a9cac
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This changes many different CMake places to mention Qt6 instead of
Qt5.
Note that some old qt5 cmake config files in corelib are probably not
needed anymore, but I still renamed and kept them for now.
Change-Id: Ie69e81540386a5af153f76c0242e18d48211bec4
In particular, Qt targets extended with other qt targets
(eg. Qt::VulkanSupport or Qt::LinuxAccessibilitySupport)
after the first add_qt_module were not taken into account when generating
Depends files.
Note that this patch updates the minimum required version
to CMake 3.15
Change-Id: I747deedd4d59e385876bc1a834ef9bdb6078911b
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This commit introduces infrastructure work to allow static builds of Qt
to handle importing of plug-ins.
Change-Id: Ife0ca3ca7276ea8ec96fe0eb6adf934fad7620ec
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This is needed because dependencies added after add_qt_module with extend_target
are currently not taken into account.
Task-number: QTBUG-75538
Change-Id: I2c72207fb88b2480e41a2c8550978fb194275617
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
Also make the tool package depend on all tool packages that correspond
to the qt module dependencies.
So find_package(Qt5Widgets) implicitly calls find_package(Qt5WidgetTools).
And find_package(Qt5WidgetsTools) will call find_package for
Qt5GuiTools, and Qt5CoreTools.
This enhances the user experience, so that in modules like qtsvg, you
don't have to specify both find_package(Qt5Widgets) and
find_package(Qt5WidgetsTools), but only the former.
Or when cross building, you only need to specify Qt5WidgetTools, to get
both Core and Gui tools.
Change-Id: Ib1c5173a5b97584a52e144c22e38e90a712f727a
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
This change introduces a new function called qt_find_package()
which can take an extra option called PROVIDED_TARGETS, which
associates targets with the package that defines those targets.
This is done by setting the INTERFACE_QT_PACKAGE_NAME and
INTERFACE_QT_PACKAGE_VERSION properties on the imported targets.
This information allows us to generate appropriate find_dependency()
calls in a module's Config file for third party libraries.
For example when an application links against QtCore, it should also
link against zlib and atomic libraries. In order to do that, the
library locations first have to be found by CMake. This is achieved by
embedding find_dependency(ZLIB) and find_dependency(Atomic) in
Qt5CoreDependencies.cmake which is included by Qt5CoreConfig.cmake.
The latter is picked up when an application project contains
find_package(Qt5Core), and thus all linking dependencies are resolved.
The information 'which package provides which targets' is contained
in the python json2cmake conversion script. The generated output of
the script contains qt_find_package() calls that represent that
information.
The Qt5CoreDependencies.cmake file and which which dependencies it
contains is generated at the QtPostProcess stop.
Note that for non-static Qt builds, we only need to propagate public
3rd party libraries. For static builds, we need all third party
libraries.
In order for the INTERFACE_QT_PACKAGE_NAME property to be read in any
scope, the targets on which the property is set, have to be GLOBAL.
Also for applications and other modules to find all required third
party libraries, we have to install all our custom Find modules, and
make sure they define INTERFACE IMPORTED libraries, and not just
IMPORTED libraries.
Change-Id: I694d6e32d05b96d5e241df0156fc79d0029426aa
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
