From: Aurelien Jarno <aurel32@debian.org>
    
mesa fails to build on GNU/kFreeBSD, since some parts are not enabled.
    
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=524690

--- mesa-7.4.orig/configure.ac
+++ mesa-7.4/configure.ac
@@ -680,7 +680,7 @@
             ;;
         esac
         ;;
-    freebsd* | dragonfly*)
+    freebsd* | dragonfly* | kfreebsd*-gnu*)
         DEFINES="$DEFINES -DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1"
         DEFINES="$DEFINES -DIN_DRI_DRIVER -DHAVE_ALIAS"