Index: trunk/psphot/src/Makefile.am
===================================================================
--- trunk/psphot/src/Makefile.am	(revision 24586)
+++ trunk/psphot/src/Makefile.am	(revision 25383)
@@ -128,5 +128,6 @@
 	psphotCheckStarDistribution.c  \
 	psphotThreadTools.c  	       \
-	psphotAddNoise.c
+	psphotAddNoise.c               \
+	psphotEfficiency.c
 
 # dropped? psphotGrowthCurve.c