https://bugs.kde.org/show_bug.cgi?id=402902
Bug ID: 402902
Summary: libxkbfile specified as optional, but CMake still
fails if it is not present
Product: ktouch
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: general
Assignee: sebastian.gottfr...@posteo.de
Reporter: spiolli...@googlemail.com
Target Milestone: ---
While packaging ktouch for NixOS, I found out that libxkbfile doesn't seem to
be as optional as described: Although the README [1] specifies libxkbfile as
optional, when libxkbfile is not provided to the build environment cmake fails:
```
builder for '/nix/store/ljm4ikyz4c785jf9qxk4q2lpbdqvarmh-ktouch-18.12.0.drv'
failed with exit code 1; last 10 log lines:
used as include directory in directory /build/ktouch-18.12.0/src
used as include directory in directory /build/ktouch-18.12.0/src
used as include directory in directory /build/ktouch-18.12.0/src
used as include directory in directory /build/ktouch-18.12.0/src
used as include directory in directory /build/ktouch-18.12.0/src
X11_Xkbfile_LIB (ADVANCED)
linked by target "ktouch" in directory /build/ktouch-18.12.0/src
-- Configuring incomplete, errors occurred!
```
I could narrow it down to the call `find_package(X11)` [2], which invokes the
CMake module `FindX11` and thus also searches for libxkbfile, failing if it is
not found.
Thus it'd be interesting whether the `find_package(X11)` could be marked
optional. Otherwise the README needs some adjustments.
[1] https://cgit.kde.org/ktouch.git/tree/README.md
[2] https://cgit.kde.org/ktouch.git/tree/src/CMakeLists.txt#n7
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