pkgsrc/x11/Xfixes fails to build

[Georg Schwarz <georg.schwarz%freenet.de@localhost>]

pkgsrc/x11/Xfixes fails to build on my FreeBSD 7 system:

...
checking for fixesext >= 2.0... Package fixesext was not found in the  
pkg-config search path. Perhaps you should add the directory  
containing `fixesext.pc' to the PKG_CONFIG_PATH environment variable  
No package 'fixesext' found
configure: error: Library requirements (fixesext >= 2.0) not met;  
consider adjusting the PKG_CONFIG_PATH environment variable if your  
libraries are in a nonstandard prefix so pkg-config can find them.
*** Error code 1


X11_TYPE is native.
Does this imply that fixesext.pc is supposed to be supplied by  
FreeBSD, not by pkgsrc?


Looking at pkg/31086, I could work around the issue setting  
PREFER.fixesproto=pkgsrc. Nevertheless I wonder why this seems to be  
necessary.


--
Georg Schwarz    http://home.pages.de/~schwarz/
georg.schwarz%freenet.de@localhost  +49 151 11559652