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CMake: Allow specifying custom install dir for non-EP examples

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Originally, QT_INTERNAL_EXAMPLES_INSTALL_PREFIX was added to
control the installation of examples when they are built as
ExternalProjects, and was not considered for the non-EP case because
we hoped to switch entirely to EP-based building.

Due to some unsolved issues regarding using EP builds in CI, add the
ability to control the installation of non-EP examples.

This will be used in the CI to allow removing the hacky
INSTALL_EXAMPLEDIR and INSTALL_EXAMPLESDIR assignments in example
projects.

It is also likely that we will not deprecate the non-EP based
building, because it is useful for IDE integration (EP targets
are not as developer-friendly to work with in an IDE in regards
to rebuilding).

Amends 98c89c8cc1

Pick-to: 6.2 6.3
Task-number: QTBUG-90820
Task-number: QTBUG-96232
Change-Id: I02264aaa1daa2c80bb9ef3d02b1831b4ca5d2b84
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
This commit is contained in:
Alexandru Croitor 2022-03-25 16:08:26 +01:00
parent 33f631920f
commit 9a18facc66
1 changed files with 9 additions and 2 deletions
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11
cmake/QtBuildInternals/QtBuildInternalsConfig.cmake
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@ -896,8 +896,15 @@ unset(CMAKE_INSTALL_PREFIX)
# Override the install prefix in the subdir cmake_install.cmake, so that
# relative install(TARGETS DESTINATION) calls in example projects install where we tell them to.
set(CMAKE_INSTALL_PREFIX
"${CMAKE_INSTALL_PREFIX}/${INSTALL_EXAMPLESDIR}/${example_rel_path}")
# Allow customizing the installation path of the examples. Will be used in CI.
if(QT_INTERNAL_EXAMPLES_INSTALL_PREFIX)
set(qt_example_install_prefix "${QT_INTERNAL_EXAMPLES_INSTALL_PREFIX}")
else()
set(qt_example_install_prefix "${CMAKE_INSTALL_PREFIX}/${INSTALL_EXAMPLESDIR}")
endif()
file(TO_CMAKE_PATH "${qt_example_install_prefix}" qt_example_install_prefix)
set(CMAKE_INSTALL_PREFIX "${qt_example_install_prefix}/${example_rel_path}")
# Make sure unclean example projects have their INSTALL_EXAMPLEDIR set to "."
# Won't have any effect on example projects that don't use INSTALL_EXAMPLEDIR.