--- a/make/devkit/Tools.gmk	Wed Oct 31 14:38:14 2018 -0400
+++ b/make/devkit/Tools.gmk	Wed Oct 31 13:14:52 2018 -0700
@@ -110,6 +110,7 @@
     libXext libXext-devel \
     libXtst libXtst-devel \
     libXrender libXrender-devel \
+    libXrandr libXrandr-devel \
     freetype freetype-devel \
     libXt libXt-devel \
     libSM libSM-devel \