Stefan Fiedler via Rene Rebe:

package/rene/avifile/avifile.conf

@@ -20,4 +20,12 @@
 # 
 # --- ROCK-COPYRIGHT-NOTE-END ---
 
-confopt="$confopt --enable-release --enable-libmad"
+# detect features the configure does not attempt to detect
+[ $arch == x86 ] && var_append extraconfopt " " "--enable-x86opt"
+pkginstalled divx4linux && var_append extraconfopt " " "--with-divx4-prefix=/usr"
+pkginstalled mad && var_append extraconfopt " " "--enable-libmad"
+
+# avifile 0.7.38 currently tries to but is not able to use the stand-alone 
+# freetype package (2.1.5) so we use the one included in XFree86.
+pkginstalled freetype && var_append extraconfopt " " "--with-ft-prefix=/usr/X11"
+