OSX/CI: kdesdk-thumbnailers fails to build on branch master

[Marko Käning]

Hi devs,

I fail to build kdesdk-thumbnailers on OSX/CI due to this:
---
po_thumbnailer/pocreator.cpp:24:10: fatal error: 'gettext-po.h' file not found
#include <gettext-po.h>
         ^
1 error generated.
make[2]: *** [po_thumbnailer/CMakeFiles/pothumbnail.dir/pocreator.cpp.o] Error 1
make[1]: *** [po_thumbnailer/CMakeFiles/pothumbnail.dir/all] Error 2
make: *** [all] Error 2

KDE Continuous Integration Build
== Building Project: kdesdk-thumbnailers - Branch frameworks
---


This file exists installed through MacPorts below the /opt/local prefix:
---
$ port contents gettext | grep gettext-po.h
  /opt/local/include/gettext-po.h
---

Simply using "configureExtraArgs=-DCMAKE_PREFIX_PATH=/opt/local” does not do
the job.

I think the project needs to locate gettext properly before taking off into
building...

Greets,
Marko