The pkgconfig file changes in xulrunner are mentioned in:
I got the pkg-config checks fixed up but I'm getting this compilation error with
xulrunner-devel-1.9-0.beta2.7.fc9.i386, which leads to other errors.
In file included from /usr/include/xulrunner-sdk-1.9pre/gfx/nsMargin.h:41,
/usr/include/xulrunner-sdk-1.9pre/gfx/nsCoord.h:42:25: error: nsMathUtils.h: No
such file or directory
Still fails to build. Reassigning this to xulrunner maintainers and raising
*** Bug 434316 has been marked as a duplicate of this bug. ***
Taking the bug.
fixed in yelp-2.21.90-4.fc9