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| author | Alexandru Croitor <alexandru.croitor@qt.io> | 2021-10-18 17:08:27 +0200 |
|---|---|---|
| committer | Alexandru Croitor <alexandru.croitor@qt.io> | 2021-10-20 11:24:03 +0200 |
| commit | 87215c70c0ff0bdc52dfa463f050d2aa049cdd91 (patch) | |
| tree | 524aca6f61c0d1eb36ae7805606f763302bf3d0d /cmake | |
| parent | 91534587314791f0d6ad7866308e0d22e2794fc9 (diff) | |
CMake: Fix rpath-link dependencies when cross-compiling
Private Qt module dependencies of a Qt module are recorded
in the IMPORTED_LINK_DEPENDENT_LIBRARIES property of a Qt module.
This property is used to compute the runtime dependency dir path
to be passed to the linker via the -rpath-link option.
If the referenced target does not exist in the scope where it's
used, no -rpath-link will be generated (or at least that specific
dir path won't be passed).
The linking operation will either fail saying the library is not found,
or a different version of the library might be silently picked up in
the sysroot or other implicit lib dir.
Make sure that QtFooModuleDependencies.cmake calls find_package() for
all Qt module private dependencies (or other Qt provided 3rd party
libs in the Qt6:: namespace) so that the targets are in scope and
IMPORTED_LINK_DEPENDENT_LIBRARIES does its job.
qmake also records the INTERFACE_LINK_LIBRARIES of a private Qt module
as the runtime dependencies of the module.
It's not clear why it does that. A private Qt module is an
INTERFACE_LIBRARY so it shouldn't add any new runtime dependencies.
Nevertheless, the find_package part of that has been recently addressed
in 2b6500cd15c0a41cf3e5eea8178e2044012dbd97 for a different reason.
This change is basically the CMake equivalent of
326b91ea788b013512ae911c51cc19497d88916d
Pick-to: 6.2
Fixes: QTBUG-86533
Change-Id: Iaf514a14acaded4e8752149cca0c159a271be188
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
Diffstat (limited to 'cmake')
| -rw-r--r-- | cmake/QtFindPackageHelpers.cmake | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/cmake/QtFindPackageHelpers.cmake b/cmake/QtFindPackageHelpers.cmake index 8519922f85..7d8e9420e2 100644 --- a/cmake/QtFindPackageHelpers.cmake +++ b/cmake/QtFindPackageHelpers.cmake @@ -308,10 +308,18 @@ function(qt_register_target_dependencies target public_libs private_libs) set(target_deps "") endif() - # Only process private dependencies if target is a static library get_target_property(target_type ${target} TYPE) set(lib_list ${public_libs}) - if (target_type STREQUAL "STATIC_LIBRARY") + # Record Qt target private dependencies information which will be used to generate + # find_dependency() calls. + # + # Private static library dependencies become $<LINK_ONLY:> dependencies in + # INTERFACE_LINK_LIBRARIES. + # + # Private shared library dependencies are listed in the target's + # IMPORTED_LINK_DEPENDENT_LIBRARIES and used in rpath-link calculation. + # See QTBUG-86533 for some details. + if (target_type STREQUAL "STATIC_LIBRARY" OR target_type STREQUAL "SHARED_LIBRARY") list(APPEND lib_list ${private_libs}) endif() |