CMake changes, libindi and KStrars

[Yuri Chornoivan]

Hi,

It seems that some recent changes in CMake lead to breakage of KStars compilation on Jenkins and recent Linux-based systems (like Mageia 7 with CMake 3.13.1).

https://build.kde.org/job/Extragear/job/kstars/

On the old systems (Mageia 6, gcc 5.5, CMake 3.10) everything works fine.

Examples:
FreeBSD on CI:
https://build.kde.org/job/Extragear/job/kstars/job/kf5-qt5%20FreeBSDQt5.11/173/consoleFull

08:13:27 -- Checking for module 'libindi'
08:13:29 --   Package 'libindi', required by 'virtual:world', not found
08:13:30  * INDI (required version >= 1.7.1), Astronomical instrumentation control, <http://www.indilib.org>
08:13:30    Support for controlling astronomical devices on Linux with KStars.

But

08:14:26 /usr/home/jenkins/workspace/Extragear/kstars/kf5-qt5 FreeBSDQt5.11/kstars/ekos/manager.h:15:10: fatal error: 'libindi/baseclient.h' file not found
08:14:26 #include <libindi/baseclient.h>

or in earlier build
/usr/home/jenkins/workspace/Extragear/kstars/kf5-qt5 FreeBSDQt5.11/kstars/ekos/manager.h:15:10: fatal error: 'baseclient.h' file not found

Mageia 7 (gcc 8.2.1, CMake 8.2.1, libindi 1.7.4):
-- Checking for module 'libindi'
--   Found libindi, version 1.7.4

But later
-- The following OPTIONAL packages have not been found:

 * INDI (required version >= 1.7.1), Astronomical instrumentation control, <http://www.indilib.org>
   Support for controlling astronomical devices on Linux with KStars.

then compiles file with #include <libindi/baseclient.h> and fails with
/kstars/kstars/ekos/manager.h:18:10: критична помилка: ui_manager.h: No such file or directory
 #include "ui_manager.h"
          ^~~~~~~~~~~~~~

because INDI was not found and CMake did not generate ui_manager.h.

Does anybody know how this can be fixed?

Thanks in advance for your advice.

Best regards,
Yuri