Aka handle CMAKE_INSTALL_PREFIX in a more relocatable way.
The following story inspired this change.
If a user wants to build a Qt repo into a different install prefix
than the usual Qt one, this will fail configuration because we
look for various things like syncqt, qdoc, etc relative to
CMAKE_INSTALL_PREFIX, which will now point to a different location
where none of the above tools are located.
The intent for such a use case is to support building Qt packages with
Conan, which sets a random install prefix when configuring a repo.
The idea is to derive the qt prefix dynamically from the
QtBuildInternals package location. Essentially it's a reverse relative
path from the QtBuildInternalsConfig.cmake file to the install prefix
that was specified when initially configuring qtbase.
Once the dynamic prefix is computed (so we know where the possibly
relocated Qt is), we can find tools like syncqt and qdoc.
This is an initial attempt to support a use case like that.
More design work will probably needed in case if tools / libs need to
be found in a location different than the Qt install prefix (so
support for multiple install prefixes / search paths).
An example of such a case would be when building qtdeclarative and
qtquickcontrols2 as Conan packages in one go. Most likely the
qmltyperegistrar tool will be located in the random install prefix
set by Conan, so building qtquickcontrols2 might fail due to not
finding the tool in the original Qt install prefix.
As to the implementation details, the change does the following:
- Dynamically computes and sets the
QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX variable when
find_package()'ing QtBuildInternals. It's an absolute path
pointing to where the relocated Qt is.
- When building qtbase this variable is not yet available (due
to QtBuildInternalsExtra not existing), in that case we set
the variable to the absolute path of CMAKE_INSTALL_PREFIX
(but only for the initial qtbase configuration).
- Remove QT_BUILD_INTERNALS_ORIGINAL_INSTALL_PREFIX which was used
for standalone tests purposes. It's not needed now that we compute
the location of the Qt prefix dynamically.
- The Unixy qt-cmake and qt-cmake-private shell scripts now
use a relative path to find the toolchain file we created.
- The toolchain file also dynamically computes the location of the Qt
packages, and adds them to CMAKE_PREFIX_PATH.
- A lot of existing CMAKE_INSTALL_PREFIX uses are replaced with
QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX. This includes finding
tool locations, mkspecs dir, path environment setup for tools, etc.
- Some places still use CMAKE_PREFIX_PATH in the following cases
- When determining paths while configuring qtbase (valid cases)
- When I wasn't sure what the behavior should be, so I left them
as-is (an example is documentation generation, do we want to
install it into the random Conan prefix, or into the main prefix?
Currently it installs in the random prefix).
Note that relocating a Qt installation does not work for non-prefix /
non-installed builds, due to hardcoded paths to include directories
and libraries in generated FooTargets.cmake files.
Task-number: QTBUG-83999
Change-Id: I87d6558729db93121b1715771034b03ce3295923
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Due to the install prefix being changed for standalone tests,
the correct $qt_prefix/bin folder was not added to the PATH
environment variable when running tests.
Make sure to always include the the original qt install prefix,
even if a different install prefix is specified when configuring
standalone tests.
Amends 39090ea15c
Change-Id: I22aab732bb2bb679074a811d28d8209e1d535df3
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
This allows doing debug_and_release builds with Ninja on all
platforms.
The "Ninja Multi-Config generator" is available starting with CMake
3.17.
Desired configurations can be set via CMAKE_CONFIGURATION_TYPES.
Possible values: "Release, Debug, RelWithDebInfo, MinRelSize".
For example -DCMAKE_CONFIGURATION_TYPES="Release;Debug".
The first configuration is the 'default' configuration which is
built when calling ninja with no arguments.
To build all targets of a certain configuration use "ninja all:Release"
or "ninja all:Debug".
To build all targets in all configurations use "ninja all:all".
Note that the first configuration influences which configuration of
tools will be used when building the libraries for all configurations.
In simple terms, when configured with
-DCMAKE_CONFIGURATION_TYPES="Release;Debug" the release version of moc
is used by AUTOMOC.
When configured with -DCMAKE_CONFIGURATION_TYPES="Debug;Release"
the debug version of moc is used by AUTOMOC.
Framework builds and Ninja Multi-Config don't currently work together
due to multiple bugs in CMake, which ends up generating an invalid ninja
file with duplicate rules. There are also issues with placement of the
debug artifacts.
This will be handled in a follow up patch after CMake is fixed.
Task-number: QTBUG-76899
Change-Id: If224adc0b71b7d1d6606738101536146aa866cd7
Reviewed-by: Qt CMake Build Bot
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
A developer can pass either -DQT_NO_MAKE_TESTS=ON or
-DQT_NO_MAKE_EXAMPLES=ON to exclude tests or examples from being built
as part the default make target (when you write just make or ninja).
With ninja, tests and examples can be built separately one by one,
by typing
$ ninja tst_foo
or
$ ninja example_bar
Same can be done with the Makefile generator.
$ make tst_foo
All tests / examples can be built in one go by typing
$ ninja tests/all
or
$ ninja examples/all
With the Makefile generator unfortunately it's not as nice and is most
likely an implementation detail, but it can still be done by running
something like
$ make -f CMakeFiles/Makefile2 tests/all
or
$ make -f CMakeFiles/Makefile2 examples/all
Change-Id: I34f168b3ab41e952a21d3ace5634e25a9f41922e
Reviewed-by: Qt CMake Build Bot
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
As with qmake, you configure with or without -nomake tests -nomake
examples, and the choice is propagated to other repositories.
Do the same for CMake. It's still possible to opt out to build one
or the other by passing -DBUILD_TESTING=OFF -DBUILD_EXAMPLES=OFF
on the command line, which takes precedence over the value saved to
QtBuildInternalsExtra.
Change-Id: If0fbfa938d88309e7969c9bacc8d0bf86548bf5e
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Qt CMake Build Bot
Export the architecture configuration variables from QtBase. There are
other modules that require access to this information in order to
enable certain features (e.g: qml_jit in QtDeclarative).
Change-Id: If2c7f29ccb1c0b0a0db3d78ad133a2a6be12b5ad
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
QT_SOURCE_TREE is a variable that is set in qtbase/.qmake.conf.
In qtbase, it's used throughout various
projects to find cpp sources when building standalone tests (among
other things).
Everything works fine with qmake, because even if qmake is invoked
on the tests subfolder, qmake searches up the source directory tree
until it finds a .qmake.conf file, and uses that.
When building qttools with qmake, the qdoc project expects
to have a QT_SOURCE_TREE value, but it's not actually set in the
qttools/.qmake.conf file, so the generated include paths that use
that value are incorrect. Curiously the build still succeeds.
Now in CMake land we replaced QT_SOURCE_TREE with
CMAKE_SOURCE_DIR, but that does not work properly when doing a
standalone tests build, because the project in that case is the
tests one, and not the qtbase one, so configuration fails in a
developer build when trying to configure some private tests.
So far I've found that only qtbase actively uses this value.
A temporary fix is to save the qtbase source directory into a
QT_SOURCE_TREE variable inside the generated
BuildInternalsExtra.cmake file.
The pro2cmake script is changed to handle presence of QT_SOURCE_TREE
in a qrc file path. This is handled by finding the location of a
.qmake.conf file starting from the project file absolute path.
This is needed to stop the script from crashing when handling
the mimedatabase test projects for example.
The change also regenerates the relevant failing test projects, and
thus standalone tests (when doing developer builds aka private_tests
enabled) now configure and build successfully.
Change-Id: I15adc6f4ab6e3056c43ed850196204e2229c4d98
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
QT_WILL_INSTALL was previously always set to ON when doing a
qtdeclarative build, because
CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT evaluated to false due to
always having to set CMAKE_INSTALL_PREFIX to point to the qtbase build
directory.
Instead of recomputing the value of QT_WILL_INSTALL, compute it once
while configuring qtbase, and add it to the generated
QtBuildInternalsExtra.cmake file, so it propagates to all other repos
that will be built.
Change-Id: If8bf63e7501b5758fe7aa0f799cb0746704f4811
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
