Commit Graph

3 Commits

Author SHA1 Message Date
Alexandru Croitor
c9bea1ad62 Add initial support for CMake "Ninja Multi-Config" generator
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>
2020-01-27 11:47:57 +00:00
Alexandru Croitor
38640f745e Fix toolchain path when doing non-prefix builds
Previously the cmake install prefix was added twice during a non-prefix
build, which evaluated to an incorrect path.

Set another absolute dir variable, and use that instead.

Change-Id: I73099510dadc8f401d5a763f21840c9671686c10
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Reviewed-by: Qt CMake Build Bot
2019-07-03 16:09:55 +00:00
Simon Hausmann
2895f3ffaa Generate a toolchain and convenience cmake wrapper
This gets us a step into the direction of convenience that qmake
offered:

    * QtBase is configured with a long command line (especially when
      cross-compiling)
    * Afterwards application developers (or other module builds) can
      just use qmake && make

By generating a toolchain file we can capture vcpkg and toolchain
chain-loading and a shell script can take care of providing the prefix
path.

Change-Id: Ided81f5432cab862306f2bea86cfe8e56adf71b0
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2019-06-24 14:23:11 +00:00