Check libpng directly into third_party/

third_party/libpng/scripts/makefile.freebsd

Index: third_party/libpng/scripts/makefile.freebsd
diff --git a/third_party/libpng/scripts/makefile.freebsd b/third_party/libpng/scripts/makefile.freebsd
new file mode 100644
index 0000000000000000000000000000000000000000..cad1a5aa873c66ffbd9645ba81c854f002153f2e
--- /dev/null
+++ b/third_party/libpng/scripts/makefile.freebsd
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+# makefile for libpng under FreeBSD
+# Copyright (C) 2014 Glenn Randers-Pehrson and Andrey A. Chernov
+# Copyright (C) 2002, 2007, 2009 Glenn Randers-Pehrson and Andrey A. Chernov
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+PREFIX?=        /usr/local
+SHLIB_VER?=     16
+
+LIB=		png
+SHLIB_MAJOR=	${SHLIB_VER}
+SHLIB_MINOR=	0
+NO_PROFILE=	YES
+NO_OBJ=		YES
+
+# where make install puts libpng.a and png.h
+DESTDIR=	${PREFIX}
+LIBDIR=		/lib
+INCS=		png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+INCSDIR=	/include/libpng
+INCDIR=		${INCSDIR}		# for 4.x bsd.lib.mk
+MAN=		libpng.3 libpngpf.3 png.5
+MANDIR=		/man/man
+SYMLINKS=       libpng/png.h ${INCSDIR}/../png.h \
+		libpng/pngconf.h ${INCSDIR}/../pngconf.h \
+		libpng/pnglibconf.h ${INCSDIR}/../pnglibconf.h
+
+# where make install finds libz.a and zlib.h
+ZLIBLIB=	/usr/lib
+ZLIBINC=	/usr/include
+
+LDADD+=		-lm -lz
+#LDADD+=	-lm -lz -lssp_nonshared   # for OSVERSION < 800000 ?
+
+DPADD+=		${LIBM} ${LIBZ}
+
+CPPFLAGS+=	-I. -I${ZLIBINC}
+CFLAGS+=	-W -Wall
+
+# Pre-built configuration
+# See scripts/pnglibconf.mak for more options
+PNGLIBCONF_H_PREBUILT= scripts/pnglibconf.h.prebuilt
+
+SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
+	pngwtran.c pngmem.c pngerror.c pngpread.c
+
+.c.o:
+	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
+
+pngtest: pngtest.o libpng.a
+	${CC} ${CFLAGS} -L. -static -o pngtest pngtest.o -L${ZLIBLIB} \
+	-lpng ${LDADD}
+
+CLEANFILES= pngtest pngtest.o pngout.png
+
+test: pngtest
+	./pngtest
+
+pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
+	cp $(PNGLIBCONF_H_PREBUILT) $@
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+	chmod a-w *.[ch35] $(DOCS) scripts/*
+
+.include <bsd.lib.mk>