DO NOT MERGE Update libpng to 1.6.20
BUG:23265085
Change-Id: I85199805636d771f3597b691b63bc0bf46084833
(cherry picked from commit bbe98b40cda082024b669fa508931042eed18f82)
diff --git a/scripts/makefile.sgi b/scripts/makefile.sgi
index 96c61b0..7df0902 100644
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -22,6 +22,7 @@
MKDIR_P=mkdir -p
LN_SF=ln -sf
RANLIB=echo
+CP=cp
RM_F=/bin/rm -f
# Where make install puts libpng.a, libpng16.so, and libpng16/png.h
@@ -74,6 +75,10 @@
DL=$(DESTDIR)$(LIBPATH)
DM=$(DESTDIR)$(MANPATH)
+# Pre-built configuration
+# See scripts/pnglibconf.mak for more options
+PNGLIBCONF_H_PREBUILT = scripts/pnglibconf.h.prebuilt
+
OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
pngwtran.o pngmem.o pngerror.o pngpread.o
@@ -83,9 +88,8 @@
all: libpng.a pngtest shared libpng.pc libpng-config
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
+pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
+ $(CP) $(PNGLIBCONF_H_PREBUILT) $@
libpng.a: $(OBJS)
$(AR_RC) $@ $(OBJS)