Add PNG support

sys/unix/Makefile.src

@@ -261,12 +261,13 @@ WINX11SRC ?= ../win/X11/Window.c ../win/X11/dialogs.c ../win/X11/winX.c \
 	../win/X11/winmisc.c ../win/X11/winstat.c ../win/X11/wintext.c \
 	../win/X11/winval.c ../win/X11/winlabel.c \
 	../win/share/tileset.c ../win/share/bmptiles.c ../win/share/giftiles.c \
-    $(GENTILECFILE)
+	../win/share/pngtiles.c $(GENTILECFILE)
 WINX11OBJ ?= $(TARGETPFX)Window.o $(TARGETPFX)dialogs.o $(TARGETPFX)winX.o \
 	$(TARGETPFX)winmap.o $(TARGETPFX)winmenu.o $(TARGETPFX)winmesg.o \
 	$(TARGETPFX)winmisc.o $(TARGETPFX)winstat.o $(TARGETPFX)wintext.o \
 	$(TARGETPFX)winval.o $(TARGETPFX)winlabel.o \
-	$(TARGETPFX)tileset.o $(TARGETPFX)bmptiles.o $(TARGETPFX)giftiles.o
+	$(TARGETPFX)tileset.o $(TARGETPFX)bmptiles.o $(TARGETPFX)giftiles.o \
+	$(TARGETPFX)pngtiles.o
 #
 # Files for a Qt 3 interface (renamed since nethack 3.6.x)
 #
@@ -1113,6 +1114,9 @@ $(TARGETPFX)bmptiles.o: ../win/share/bmptiles.c $(CONFIG_H) \
 $(TARGETPFX)giftiles.o: ../win/share/giftiles.c $(CONFIG_H) \
 		../include/objclass.h ../include/tileset.h
 	$(TARGET_CC) $(TARGET_CFLAGS) $(X11CFLAGS) -c -o $@ ../win/share/giftiles.c
+$(TARGETPFX)pngtiles.o: ../win/share/pngtiles.c $(CONFIG_H) \
+		../include/objclass.h ../include/tileset.h
+	$(TARGET_CC) $(TARGET_CFLAGS) $(X11CFLAGS) -c -o $@ ../win/share/pngtiles.c
 $(TARGETPFX)wc_chainin.o: ../win/chain/wc_chainin.c $(HACK_H)
 	$(TARGET_CC) $(TARGET_CFLAGS) -c -o $@ ../win/chain/wc_chainin.c
 $(TARGETPFX)wc_chainout.o: ../win/chain/wc_chainout.c $(HACK_H)

sys/unix/hints/linux.500

@@ -398,6 +398,7 @@ endif   # MAKEFILE_SRC
 ifdef WANT_WIN_X11
 USE_XPM=1
 USE_XFT=1
+USE_PNG=1
 WINX11LIB = -lXaw -lXmu -lXext -lXt -lX11
 VARDATND0 += x11tiles NetHack.ad pet_mark.xbm pilemark.xbm
 ifndef CROSSCOMPILE
@@ -419,6 +420,10 @@ CFLAGS += -DUSE_XPM
 WINX11LIB += -lXpm
 VARDATND0 += rip.xpm
 endif
+ifdef USE_PNG
+CFLAGS += -DUSE_PNG
+WINX11LIB += -lpng
+endif
 WINLIB += $(WINX11LIB)
 LFLAGS+=-L/opt/X11/lib
 endif	# WANT_WIN_X11

sys/unix/hints/macOS.500

@@ -279,6 +279,7 @@ endif # WANT_WIN_CHAIN
 ifdef WANT_WIN_X11
 USE_XFT=1
 USE_XPM=1
+USE_PNG=1
 WINX11LIB = -lXaw -lXmu -lXext -lXt -lX11
 VARDATND0 += x11tiles NetHack.ad pet_mark.xbm pilemark.xbm
 GENTILEOFILE = $(SRCDIR)/tile.o
@@ -298,6 +299,10 @@ CFLAGS += -DUSE_XPM
 WINX11LIB += -lXpm
 VARDATND0 += rip.xpm
 endif
+ifdef USE_PNG
+CFLAGS += -DUSE_PNG
+WINX11LIB += -lpng
+endif
 WINLIB += $(WINX11LIB)
 LFLAGS += -L/opt/X11/lib
 endif	# WANT_WIN_X11