Some packages, including KDE, test for a sufficiently recent version of 
libXrandr for their purposes by testing the existence of 
XRRSetScreenConfigAndRate() which first appeared in XFree86 4.3. 

However in x11/Xrandr/builtin.mk there is no way to distinguish between the 
versions of Xrandr provided by XFree86 4.2, 4.3, 4.4 or anything newer. All 
of them are treated as equivalent to Xrandr 1.0.  In order to distinguish the 
4.2 version of Xrandr from more recent I'd like to make the following change 
to Xrandr/builtin.mk:

--- builtin.mk.orig 2004-07-28 00:28:55.000000000 +1200
+++ builtin.mk 2004-10-17 01:29:27.000000000 +1300
@@ -22,8 +22,9 @@
 # the software.  Match up Xrandr versions with XFree86 versions for an
 # approximate determination of the Xrandr version.
 #
-_XRANDR_VERSIONS= 1.0.2  1.0.1  1.0
-_XRANDR_1.0= 4.2 4.2.* 4.3 4.3.[0-9] 4.3.[0-9].* 4.3.[1-8][0-9]* 4.3.9[0-8]*
+_XRANDR_VERSIONS= 1.0.2  1.0.1  1.0 0.99
+_XRANDR_0.99= 4.2 4.2.*
+_XRANDR_1.0= 4.3 4.3.[0-9] 4.3.[0-9].* 4.3.[1-8][0-9]* 4.3.9[0-8]*
 _XRANDR_1.0+= 4.3.99.* 4.[4-9]* 4.[1-9][0-9]*
 .      if !defined(XF86_VERSION)
 XF86_VERSION= 3.3

Any objections?

Actually to maintain current behaviour should also change Xrandr/buildlink3.mk 
as follows:

--- buildlink3.mk.orig  2004-10-04 23:38:43.000000000 +1300
+++ buildlink3.mk       2004-10-17 01:53:51.000000000 +1300
@@ -11,7 +11,7 @@
 BUILDLINK_PACKAGES+=   Xrandr

 .if !empty(XRANDR_BUILDLINK3_MK:M+)
-BUILDLINK_DEPENDS.Xrandr+=     Xrandr>=1.0
+BUILDLINK_DEPENDS.Xrandr+=     Xrandr>=0.99
 BUILDLINK_RECOMMENDED.Xrandr+= Xrandr>=1.0.2nb1
 BUILDLINK_PKGSRCDIR.Xrandr?=   ../../x11/Xrandr
 .endif # XRANDR_BUILDLINK3_MK

Then the packages that care can explicitly add 
BUILDLINK_DEPENDS.Xrandr+=     Xrandr>=1.0

cheers
mark