Enable silent builds for custom rules.

puremd_rc_1003/PG-PuReMD/cuda.am

@@ -7,13 +7,12 @@
 
 # these are default values for the maximun register count parameter
 # passed to nvcc compiler (you might need to change it sometimes; all you need
-# is to set is as an environment variable).
-MAX_REG_COUNT_SINGLE ?=48
-MAX_REG_COUNT_DOUBLE ?=48
+# is to set it as an environment variable).
+MAX_REG_COUNT ?=48
 
 .cu.o:
-	$(NVCC) $(NVCCFLAGS) -maxrregcount=$(MAX_REG_COUNT_SINGLE) -o $@ -c $<
+	$(AM_V_GEN)$(NVCC) $(NVCCFLAGS) -maxrregcount=$(MAX_REG_COUNT) -o $@ -c $<
 .cu.lo:
-	$(top_srcdir)/am/cudalt.py $@ $(NVCC) $(NVCCFLAGS) -maxrregcount=$(MAX_REG_COUNT_SINGLE) -c $<
+	$(AM_V_GEN)$(top_srcdir)/am/cudalt.py $@ $(NVCC) $(NVCCFLAGS) -maxrregcount=$(MAX_REG_COUNT) -c $<
 .cu.c:
-	cp $< $@
+	$(AM_V_GEN)cp $< $@