[libpng16] Added "-Wall" to CFLAGS in contrib/pngminim/*/makefile

ANNOUNCE

@@ -32,6 +32,7 @@ Version 1.6.8beta01 [November 18, 2013]
     what is in pngpriv.h.
   Moved prototype for png_handle_unknown() in pngpriv.h outside of
     the #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED/#endif block.
+  Added "-Wall" to CFLAGS in contrib/pngminim/*/makefile
 
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CHANGES

@@ -4719,6 +4719,7 @@ Version 1.6.8beta01 [November 18, 2013]
     what is in pngpriv.h.
   Moved prototype for png_handle_unknown() in pngpriv.h outside of
     the #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED/#endif block.
+  Added "-Wall" to CFLAGS in contrib/pngminim/*/makefile
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit

contrib/pngminim/decoder/makefile

@@ -15,7 +15,7 @@ RM=rm -f
 COPY=cp
 
 CPPFLAGS=-I. -DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP
-CFLAGS=-O1
+CFLAGS=-O1 -Wall
 
 C=.c
 O=.o

contrib/pngminim/encoder/makefile

@@ -15,7 +15,7 @@ RM=rm -f
 COPY=cp
 
 CPPFLAGS=-I. -DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP
-CFLAGS=-O1
+CFLAGS=-O1 -Wall
 
 C=.c
 O=.o

contrib/pngminim/preader/makefile

@@ -31,7 +31,7 @@ XLIB = -L/usr/X11R6/lib -lX11
 LIBS = $(XLIB) -lm                      #platforms that need libm
 
 CPPFLAGS=-I. $(XINC) -DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP
-CFLAGS=-O1
+CFLAGS=-O1 -Wall
 
 C=.c
 O=.o