The idldir variable in the various .pc files installed by xulrunner-1.9 point to /usr/include/xulrunner-1.9/idl when the .idl files are actually in /usr/include/xulrunner-1.9/idl/{stable|unstable}. As such, some applications that support xulrunner-1.9 (i.e. gecko-mediaplayer) fails to compile due to $(pkg-config --variable idldir libxul) not returning the correct directory; it can be derived by appending $(pkg-config --variable includetype libxul). Unsure if this is intended behaviour by xulrunner upstream. If it is, please resolve as NOTABUG, and I will file a bug against gecko-mediaplayer. If not, please fix. Thanks.
The xulrunner-1.9 breakage is a known problem being worked on, and there is a tracker bug #213296. This bug will add gecko-mediaplayer to the list of affected packages.
You're right, i'll see what i can do
Okay, i doubt gecko-mediaplayer works with 1.9. And if it could use xulrunner-1.9, it should append includetype as you said...like all other apps do :)
The code is there to use it, and I did get it to compile with 1.9. In any case, I'll send this upstream.