I tinkered around on weekend and I got it working. So I think I will answer myself and to everyone who is interested.
"Can I use it when I have no DVB-C Hardware in the Proxmox Host?"
Yes. It works without a DVB Adapter. For the Proxmox /QEMU Guest we can use the OpenGL Driver with XINE-LIB version: 1.2.13-hg
Segmentation fault.
Root cause: Wrong graphics driver selected.
5_build_openpliPC.sh compilation error and libtuxtxt32bpp.* not created When executing the shell script "5_build_openpliPC.sh" I got a compilation error. /usr/bin/ld: -ltuxtxt32bpp kann nicht gefunden werden: Datei oder Verzeichnis nicht gefunden collect2: error: ld returned 1 exit status make[2]: *** [Makefile:801: enigma2] Fehler 1
Little error in the shell-script "3_build_own_libs.sh" in line 166
166 mkdir $INSTALL_E2DIR/lib/enigma2/python/Plugins/Extensions/$DIR
directories won't get created!!!
mkdir -p $INSTALL_E2DIR/lib/enigma2/python/Plugins/Extensions/$DIR
The -p parameter is needed for creating the whole (sub)directories.
Fixing this tuxtxt builds and installs correctly! (libtuxtxt32bpp.* will be created and linked correctly)
Enigma2-OpenPLi9-PC compiles and is working as shown in the attachments.