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Type: Task
Resolution: Done
Priority: P2: Important
Fix Version/s: None
Affects Version/s: None
Component/s: Build System: CMake
Labels:
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Doing a find_package(Qt6 COMPONENTS Core) call can fail in various ways, and the error messages are not always clear.

This can happen due to various reasons, missing 3rd party deps, can't find tools, not using the qt generated toolchain file, not setting CMAKE_PREFIX_PATH, not setting CMAKE_FIND_ROOT_PATH, not setting QT_HOST_PATH, only setting Qt6_DIR, etc.

Improving the error messages so that users can more clearly understand what went wrong and how to fix it would be useful.

relates to

QTBUG-97615 CMake cannot find packages when only Qt6_DIR and not CMAKE_PREFIX_PATH is set

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Assignee:: Alexandru Croitor

Reporter:: Alexandru Croitor

Votes:: 0 Vote for this issue

Watchers:: 1 Start watching this issue

Created:: 15 Jul '22 09:42

Updated:: 27 Jul '22 14:45

Resolved:: 27 Jul '22 14:45

There are no open Gerrit changes

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CMake: Remove dead code: Gerrit Review:

CMake: Extract package dependency finding into functions: Gerrit Review:

CMake: Remove custom Qt6 3rd party dependency implementation: Gerrit Review:

CMake: Don't search for next Qt component if a required one is missing: Gerrit Review:

CMake: Don't propagate REQUIRED to find_dependency / find_package: Gerrit Review:

CMake: Display reason when a Qt*Tools package is not found: Gerrit Review:

CMake: Rename _qt_internal_find_dependencies to something less generic: Gerrit Review:

CMake: Clarify if an optional or required Qt component is not found: Gerrit Review:

CMake: Suggest hints on how to debug missing packages: Gerrit Review:

CMake: Introduce QT_DEBUG_FIND_PACKAGE for troubleshooting: Gerrit Review:

CMake: Move Qt6HostInfo lookup into a function: Gerrit Review:

CMake: Improve Qt6HostInfo package lookup condition: Gerrit Review:

CMake: Move QT_HOST_PATH check and computation into Qt6 package: Gerrit Review:

CMake: Don't repeatedly look for the Qt6 dependency: Gerrit Review:

CMake: Remove dead code: Gerrit Review:

CMake: Rename _qt_internal_find_dependencies to something less generic: Gerrit Review:

CMake: Clarify if an optional or required Qt component is not found: Gerrit Review:

CMake: Display reason when a Qt*Tools package is not found: Gerrit Review:

CMake: Introduce QT_DEBUG_FIND_PACKAGE for troubleshooting: Gerrit Review:

CMake: Extract package dependency finding into functions: Gerrit Review:

CMake: Don't propagate REQUIRED to find_dependency / find_package: Gerrit Review:

CMake: Suggest hints on how to debug missing packages: Gerrit Review:

CMake: Remove custom Qt6 3rd party dependency implementation: Gerrit Review:

CMake: Don't search for next Qt component if a required one is missing: Gerrit Review:

CMake: Export a few useful Qt module target properties: Gerrit Review:

CMake: Record the precise package name where Private modules live: Gerrit Review:

CMake: Don't unset Qt6Qml_FOUND when including Qml plugins: Gerrit Review:

CMake: Don't look for Qt6 components that are already found: Gerrit Review:

CMake: Change __qt_internal_include_plugin_packages to be a macro: Gerrit Review:

CMake: Create aliases for Internal targets using common function: Gerrit Review:

CMake: Split 3rd party libs to be built before and after corelib: Gerrit Review:

CMake: Move Qt6HostInfo lookup into a function: Gerrit Review:

CMake: Improve Qt6HostInfo package lookup condition: Gerrit Review:

CMake: Move QT_HOST_PATH check and computation into Qt6 package: Gerrit Review:

CMake: Don't repeatedly look for the Qt6 dependency: Gerrit Review:

CMake: Export a few useful Qt module target properties: Gerrit Review:

CMake: Split 3rd party libs to be built before and after corelib: Gerrit Review:

CMake: Record the precise package name where Private modules live: Gerrit Review:

CMake: Create aliases for Internal targets using common function: Gerrit Review:

CMake: Don't unset Qt6Qml_FOUND when including Qml plugins: Gerrit Review:

CMake: Don't look for Qt6 components that are already found: Gerrit Review:

CMake: Change __qt_internal_include_plugin_packages to be a macro: Gerrit Review:

CMake: Mark PlatformCommonInternal as a Qt6 package: Gerrit Review:

CMake: Mark PlatformCommonInternal as a Qt6 package: Gerrit Review:

CMake: Export package name and 3rdparty flag for 3rd party libraries: Gerrit Review:

CMake: Export package name and 3rdparty flag for 3rd party libraries: Gerrit Review:

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