diff --git a/ANNOUNCE b/ANNOUNCE
index d3f81229..80a9da0e 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,5 +1,5 @@
 
-Libpng 1.2.47beta01 - July 10, 2011
+Libpng 1.2.47beta01 - July 11, 2011
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -42,7 +42,8 @@ Other information:
 
 Changes since the last public release (1.2.46):
 
-version 1.2.47beta01 [July 10, 2011]
+version 1.2.47beta01 [July 11, 2011]
+  Updated contrib/pngminus/makefile.std
 
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
diff --git a/CHANGES b/CHANGES
index 64034df5..43d21691 100644
--- a/CHANGES
+++ b/CHANGES
@@ -2736,7 +2736,8 @@ version 1.2.46rc02 and 1.0.56rc02 [July 8, 2011]
 version 1.2.46 and 1.0.56 [July 9, 2011]
   Udated copyright year to 2011.
 
-version 1.2.47beta01 [July 10, 2011]
+version 1.2.47beta01 [July 11, 2011]
+  Updated contrib/pngminus/makefile.std
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
diff --git a/contrib/pngminus/makefile.std b/contrib/pngminus/makefile.std
index 2fb061bb..1c283051 100644
--- a/contrib/pngminus/makefile.std
+++ b/contrib/pngminus/makefile.std
@@ -1,9 +1,9 @@
 # Makefile for PngMinus (png2pnm and pnm2png)
 # Linux / Unix
 
-#CC=cc
-CC=gcc
-LD=$(CC)
+#CC?=cc
+CC?=gcc
+LD?=$(CC)
 
 RM=rm -f
 
@@ -23,9 +23,9 @@ ZINC = -I../../../zlib
 ZLIB = -L../../../zlib -lz
 ZLIBS = ../../../zlib/libz.a
 
-CFLAGS=-O3 $(PNGINC) $(ZINC)
-LDFLAGS=$(PNGLIB) $(ZLIB)
-LDFLAGSS=$(PNGLIBS) $(ZLIBS)
+CFLAGS+=$(PNGINC) $(ZINC)
+LDLIBS=$(PNGLIB) $(ZLIB)
+LDLIBSS=$(PNGLIBS) $(ZLIBS)
 C=.c
 O=.o
 L=.a
@@ -40,19 +40,19 @@ png2pnm$(O): png2pnm$(C)
 	$(CC) -c $(CFLAGS) png2pnm$(C)
 
 png2pnm$(E): png2pnm$(O)
-	$(LD) -o png2pnm$(E) png2pnm$(O) $(LDFLAGS) -lm
+	$(LD) $(LDFLAGS) -o png2pnm$(E) png2pnm$(O) $(LDLIBS) -lm
 
 png2pnm-static$(E): png2pnm$(O)
-	$(LD) -o png2pnm-static$(E) png2pnm$(O) $(LDFLAGSS) -lm
+	$(LD) $(LDFLAGS) -o png2pnm-static$(E) png2pnm$(O) $(LDLIBSS) -lm
 
 pnm2png$(O): pnm2png$(C)
 	$(CC) -c $(CFLAGS) pnm2png$(C)
 
 pnm2png$(E): pnm2png$(O)
-	$(LD) -o pnm2png$(E) pnm2png$(O) $(LDFLAGS) -lm
+	$(LD) $(LDFLAGS) -o pnm2png$(E) pnm2png$(O) $(LDLIBS) -lm
 
 pnm2png-static$(E): pnm2png$(O)
-	$(LD) -o pnm2png-static$(E) pnm2png$(O) $(LDFLAGSS) -lm
+	$(LD) $(LDFLAGS) -o pnm2png-static$(E) pnm2png$(O) $(LDLIBSS) -lm
 
 clean:
 	$(RM) png2pnm$(O)