allow CFLAGS, LDFLAGS initial values from env

gstrauss · gstrauss · commit aeed2ba662a9 · 2016-10-27T22:13:20.000-04:00
e.g. $ CFLAGS="-fPIE" make github: closes kdlucas#44
diff --git a/UnixBench/Makefile b/UnixBench/Makefile
@@ -99,7 +99,7 @@ endif
 
 
 ## generic gcc CFLAGS.  -DTIME must be included.
-CFLAGS = -Wall -pedantic $(OPTON) -I $(SRCDIR) -DTIME
+CFLAGS += -Wall -pedantic $(OPTON) -I $(SRCDIR) -DTIME
 
 
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