https://bugs.kde.org/show_bug.cgi?id=492753
Bug ID: 492753
Summary: KDE_INSTALL_DATAROOTDIR points to share on Windows
Classification: Frameworks and Libraries
Product: extra-cmake-modules
Version: 6.5.0
Platform: Microsoft Windows
OS: Microsoft Windows
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: ecm-bugs-n...@kde.org
Reporter: genalo...@gmail.com
Target Milestone: ---
SUMMARY
In KDEInstallDirs `DATAROOTDIR` points to `share` on Windows. But it should be
`<BINDIR>/data`. This is where Qt will look on Windows (See
`GenericDataLocation` in https://doc.qt.io/qt-6/qstandardpaths.html). Docs
(https://api.kde.org/ecm/kde-module/KDEInstallDirs5.html) also say that
`DATAROOTDIR` on Windows points to `<BINDIR>/data`.
The code also looks like it should also use `<BINDIR>/data`:
https://invent.kde.org/frameworks/extra-cmake-modules/-/blob/master/kde-modules/KDEInstallDirsCommon.cmake#L271
But the `_define_relative` tries to take this variable from GNUInstallDirs
module if `KDE_INSTALL_DIRS_NO_CMAKE_VARIABLES` is not set (by default):
https://invent.kde.org/frameworks/extra-cmake-modules/-/blob/master/kde-modules/KDEInstallDirsCommon.cmake#L93
But In GNUInstallDirs the `DATAROOTDIR` is defined as `share` which leads to
the bug.
STEPS TO REPRODUCE
1. `include(KDEInstallDirs)`
2. `message(${KDE_INSTALL_DATAROOTDIR})
OBSERVED RESULT
Prints `share`.
EXPECTED RESULT
Prints `bin/data`.
SOFTWARE/OS VERSIONS
Windows: 10
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