diff --git a/scripts/makefile.ne12bsd b/scripts/makefile.ne12bsd
deleted file mode 100644
index 3dafb37..0000000
--- a/scripts/makefile.ne12bsd
+++ /dev/null
@@ -1,56 +0,0 @@
-# makefile for libpng for NetBSD for the standard
-# make obj && make depend && make && make test
-# make includes && make install
-# Copyright (C) 2002 Patrick R.L. Welche
-# Copyright (C) 2007, 2009, 2014 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# You should also run makefile.netbsd
-
-LOCALBASE?=/usr/local
-LIBDIR=	${LOCALBASE}/lib
-MANDIR= ${LOCALBASE}/man
-INCSDIR=${LOCALBASE}/include/libpng16
-
-LIB=	png16
-SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.6.37.git
-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
-INCS=	png.h pngconf.h pnglibconf.h
-MAN=	libpng.3 libpngpf.3 png.5
-
-CPPFLAGS+=-I${.CURDIR}
-
-# Pre-built configuration
-# See scripts/pnglibconf.mak for more options
-PNGLIBCONF_H_PREBUILT= scripts/pnglibconf.h.prebuilt
-
-# We should be able to do something like this instead of the manual
-# uncommenting, but it core dumps for me at the moment:
-# .if ${MACHINE_ARCH} == "i386"
-#   MKLINT= no
-# .endif
-
-CLEANFILES+=pngtest.o pngtest pnglibconf.h
-
-.c.o:
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
-
-pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
-	cp $(PNGLIBCONF_H_PREBUILT) $@
-
-pngtest.o:	pngtest.c
-	${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
-
-pngtest:	pngtest.o libpng.a
-	${CC} ${LDFLAGS} ${.ALLSRC} -o${.TARGET} -lz -lm
-
-test:	pngtest
-	cd ${.CURDIR} && ${.OBJDIR}/pngtest
-
-.include <bsd.lib.mk>
diff --git a/scripts/makefile.netbsd b/scripts/makefile.netbsd
index 471ef84..728abaf 100644
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -8,19 +8,18 @@
 # For conditions of distribution and use, see the disclaimer
 # and license in png.h
 
-# You should also run makefile.ne16bsd
-
 LOCALBASE?=/usr/local
 LIBDIR=	${LOCALBASE}/lib
 MANDIR= ${LOCALBASE}/man
 INCSDIR=${LOCALBASE}/include
 
-LIB=	png
 SHLIB_MAJOR=	16
 SHLIB_MINOR=	1.6.37.git
-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
+
+LIB=	png
+SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
+	pngread.c pngrio.c pngrtran.c pngrutil.c pngset.c pngtrans.c \
+	pngwio.c pngwrite.c pngwtran.c pngwutil.c
 INCS=	png.h pngconf.h pnglibconf.h
 MAN=	libpng.3 libpngpf.3 png.5
 
@@ -39,16 +38,16 @@
 CLEANFILES+=pngtest.o pngtest pnglibconf.h
 
 .c.o:
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
+	${CC} -c ${CPPFLAGS} ${CFLAGS} -o $@ $<
 
-pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
-	cp $(PNGLIBCONF_H_PREBUILT) $@
+pnglibconf.h: ${PNGLIBCONF_H_PREBUILT}
+	cp ${PNGLIBCONF_H_PREBUILT} $@
 
 pngtest.o:	pngtest.c
 	${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
 
 pngtest:	pngtest.o libpng.a
-	${CC} ${LDFLAGS} ${.ALLSRC} -o${.TARGET} -lz -lm
+	${CC} ${LDFLAGS} ${.ALLSRC} -o ${.TARGET} -lz -lm
 
 test:	pngtest
 	cd ${.CURDIR} && ${.OBJDIR}/pngtest
diff --git a/scripts/makefile.openbsd b/scripts/makefile.openbsd
index 95ac968..f492aee 100644
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -17,8 +17,10 @@
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
 	pngread.c pngrio.c pngrtran.c pngrutil.c pngset.c pngtrans.c \
 	pngwio.c pngwrite.c pngwtran.c pngwutil.c
-
 HDRS=	png.h pngconf.h pnglibconf.h
+MAN=	libpng.3 libpngpf.3 png.5
+DOCS=	ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO \
+	libpng-manual.txt
 
 CFLAGS+= -W -Wall
 CPPFLAGS+= -I${.CURDIR}
@@ -27,22 +29,18 @@
 
 CLEANFILES+= pngtest.o pngtest pnglibconf.h
 
-MAN=	libpng.3 libpngpf.3 png.5
-DOCS=	ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO \
-	libpng-manual.txt
-
 # Pre-built configuration
 # See scripts/pnglibconf.mak for more options
 PNGLIBCONF_H_PREBUILT= scripts/pnglibconf.h.prebuilt
 
 .c.o:
-	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
+	${CC} -c ${CPPFLAGS} ${CFLAGS} -o $@ $<
 
-pnglibconf.h: $(PNGLIBCONF_H_PREBUILT)
-	cp $(PNGLIBCONF_H_PREBUILT) $@
+pnglibconf.h: ${PNGLIBCONF_H_PREBUILT}
+	cp ${PNGLIBCONF_H_PREBUILT} $@
 
 pngtest.o:	pngtest.c
-	${CC} ${CPPFLAGS} ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
+	${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
 
 pngtest:	pngtest.o
 	${CC} ${LDFLAGS} ${.ALLSRC} -o ${.TARGET} -L${.OBJDIR} -lpng -lz -lm