qt5base-lts/CMakeLists.txt
Alexandru Croitor 42d3b21c92 Export tool config and target files for each relevant module
CMake will now generate config and target files for each module that
provides tools. As a result, namespaced global targets such as
Qt5::moc or Qt5::rcc can be made available.

Third party projects that require just these tools, and not the Qt
modules themselves,  should specify CMAKE_PREFIX_PATH pointing to the
installed Qt location, and call find_package(Qt5CoreTools),
find_package(Qt5GuiTools), etc.

It is also possible to call
find_package(Qt5Tools REQUIRED Core Widgets) where the last option
is a list of modules whose tools should be imported.

Note that all the tools are in the Qt5::
namespace and not in the Qt5CoreTools:: or Qt5WidgetsTools::
namespace.

This commit also changes the behavior regarding when to build tools
while building Qt itself.

When cross compiling Qt (checked via CMAKE_CROSSCOMPILING) or when
-DQT_FORCE_FIND_TOOLS=TRUE is passed, tools added by add_qt_tool will
always be searched for and not built.
In this case the user has to specify the CMake variable QT_HOST_PATH
pointing to an installed host Qt location.

When not cross compiling, tools added by add_qt_tool are built from
source.

When building leaf modules (like qtsvg) that require some tool that was
built in qtbase (like moc), the module project should contain a
find_package(Qt5ToolsCore) call and specify an appropriate
CMAKE_PREFIX_PATH so that the tool package is found.

Note that because HOST_QT_TOOLS_DIRECTORY was replaced by QT_HOST_PATH,
the ensure syncqt code was changed to make it work properly with
both qtbase and qtsvg.

Here's a list of tools and their module associations:
qmake, moc, rcc, tracegen, qfloat16-tables, qlalr  -> CoreTools
qvkgen -> GuiTools
uic -> WidgetTools
dbus related tools -> DBusTools

Task-number: QTBUG-74134
Change-Id: Ie67d1e2f8de46102b48eca008f0b50caf4fbe3ed
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>
2019-05-02 07:30:30 +00:00

65 lines
1.6 KiB
CMake

cmake_minimum_required(VERSION 3.14.0)
project(QtBase
VERSION 5.12.0
DESCRIPTION "Qt Base Libraries"
HOMEPAGE_URL "https://qt.io/"
LANGUAGES CXX C ASM
)
## Add some paths to check for cmake modules:
list(APPEND CMAKE_MODULE_PATH
"${CMAKE_CURRENT_SOURCE_DIR}/cmake"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/3rdparty/extra-cmake-modules/find-modules"
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/3rdparty/kwin"
)
## Qt specific setup common for all modules:
include(QtSetup)
## Enable feature summary at the end of the configure run:
include(FeatureSummary)
## QtBase specific configure tests:
include(QtBaseConfigureTests)
## Build System tests:
include(QtBaseCMakeTesting)
## Targets for global features, etc.:
include(QtBaseGlobalTargets)
## Should this Qt be static or dynamically linked?
option(BUILD_SHARED_LIBS "Build Qt statically or dynamically" ON)
set(QT_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
## Decide whether tools will be built.
qt_check_if_tools_will_be_built()
## Visit all the directories:
add_subdirectory(src)
if (BUILD_TESTING)
add_subdirectory(tests)
endif()
if (QT_WILL_BUILD_TOOLS)
add_subdirectory(qmake)
endif()
option(BUILD_EXAMPLES "Build Qt examples" ON)
if (BUILD_EXAMPLES)
add_subdirectory(examples)
endif()
## Delayed actions on some of the Qt targets:
include(QtPostProcess)
## Print a feature summary:
feature_summary(WHAT PACKAGES_FOUND
REQUIRED_PACKAGES_NOT_FOUND
RECOMMENDED_PACKAGES_NOT_FOUND
OPTIONAL_PACKAGES_NOT_FOUND
RUNTIME_PACKAGES_NOT_FOUND
FATAL_ON_MISSING_REQUIRED_PACKAGES)