File pngcrush-makefile-add-optflags.diff of Package pngcrush

diff -ur pngcrush-1.7.78/Makefile pngcrush-1.7.78_fix/Makefile
--- pngcrush-1.7.78/Makefile	2013-04-09 15:42:05.000000000 +0200
+++ pngcrush-1.7.78_fix/Makefile	2014-10-25 21:56:40.488667563 +0200
@@ -32,7 +32,8 @@
 #CFLAGS = -O2
 #CFLAGS = -O2 -fomit-frame-pointer -Wall
 #CFLAGS = -Os -fomit-frame-pointer -Wall
-CFLAGS = -O3 -funroll-loops -fomit-frame-pointer -Wall -Wshadow
+OPTFLAGS = -O3 -funroll-loops -fomit-frame-pointer
+CFLAGS = $(OPTFLAGS) -Wall -Wshadow
 # [note that -Wall is a gcc-specific compilation flag ("all warnings on")]
 
 LDFLAGS =