diff --git a/scripts/makefile.beos b/scripts/makefile.beos
index 4963f95..439dc97 100644
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -1,18 +1,23 @@
 # makefile for libpng on BeOS x86 ELF with gcc
 # modified from makefile.linux by Sander Stoks
-# Copyright (C) 2002 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1999 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
 
 CC=gcc
+AR_RC=ar rc
+MKDIR_P=mkdir
+LN_SF=ln -sf
+RANLIB=ranlib
+RM_F=/bin/rm -f
 
 # Where the zlib library and include files are located
 ZLIBLIB=/usr/local/lib
 ZLIBINC=/usr/local/include
 
 PNGMAJ = 0
-PNGMIN = 1.2.9beta6
+PNGMIN = 1.2.9beta7
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 ALIGN=
@@ -30,15 +35,13 @@
 # LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz -lm
 LDFLAGS=-L. -Wl,-soname=$(LIBNAME).so.$(PNGMAJ) -L$(ZLIBLIB) -lz -lm
 
-RANLIB=ranlib
-#RANLIB=echo
-
 # where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
+exec_prefix=$prefix
 INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
+LIBPATH=$(exec_prefix)/lib
 MANPATH=$(prefix)/man
-BINPATH=$(prefix)/bin
+BINPATH=$(exec_prefix)/bin
 
 # override DESTDIR= on the make install command line to easily support
 # installing into a temporary location.  Example:
@@ -68,7 +71,7 @@
 all: libpng.a $(LIBNAME).so pngtest libpng.pc libpng-config
 
 libpng.a: $(OBJS)
-	ar rc $@ $(OBJS)
+	$(AR_RC) $@ $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
@@ -83,11 +86,11 @@
 	chmod +x libpng-config
 
 $(LIBNAME).so: $(LIBNAME).so.$(PNGMAJ)
-	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
+	$(LN_SF) $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so
 	cp $(LIBNAME).so* /boot/home/config/lib
 
 $(LIBNAME).so.$(PNGMAJ): $(LIBNAME).so.$(PNGVER)
-	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ)
+	$(LN_SF) $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ)
 
 $(LIBNAME).so.$(PNGVER): $(OBJSDLL)
 	$(CC) -nostart -Wl,-soname,$(LIBNAME).so.$(PNGMAJ) -o \
@@ -104,63 +107,63 @@
 	./pngtest
 
 install-headers: png.h pngconf.h
-	-@if [ ! -d $(DI) ]; then mkdir $(DI); fi
-	-@if [ ! -d $(DI)/$(LIBNAME) ]; then mkdir $(DI)/$(LIBNAME); fi
+	-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
 	cp png.h pngconf.h $(DI)/$(LIBNAME)
 	chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h
-	-@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h
-	-@/bin/rm -f $(DI)/libpng
-	(cd $(DI); ln -sf $(LIBNAME) libpng; ln -sf $(LIBNAME)/* .)
+	-@$(RM_F) $(DI)/png.h $(DI)/pngconf.h
+	-@$(RM_F) $(DI)/libpng
+	(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
 
 install-static: install-headers libpng.a
-	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
+	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
 	cp libpng.a $(DL)/$(LIBNAME).a
 	chmod 644 $(DL)/$(LIBNAME).a
-	-@/bin/rm -f $(DL)/libpng.a
-	(cd $(DL); ln -sf $(LIBNAME).a libpng.a)
+	-@$(RM_F) $(DL)/libpng.a
+	(cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
 
 install-shared: install-headers $(LIBNAME).so.$(PNGVER) libpng.pc \
 	libpng.so.0.$(PNGMIN)
-	-@if [ ! -d $(DL) ]; then mkdir $(DL); fi
-	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGVER)* $(DL)/$(LIBNAME).so
-	-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)
-	-@/bin/rm -f $(DL)/libpng.so
-	-@/bin/rm -f $(DL)/libpng.so.0
-	-@/bin/rm -f $(DL)/libpng.so.0.$(PNGMIN)*
+	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+	-@$(RM_F) $(DL)/$(LIBNAME).so.$(PNGVER)* $(DL)/$(LIBNAME).so
+	-@$(RM_F) $(DL)/$(LIBNAME).so.$(PNGMAJ)
+	-@$(RM_F) $(DL)/libpng.so
+	-@$(RM_F) $(DL)/libpng.so.0
+	-@$(RM_F) $(DL)/libpng.so.0.$(PNGMIN)*
 	cp $(LIBNAME).so.$(PNGVER) $(DL)
 	cp libpng.so.0.$(PNGMIN) $(DL)
 	chmod 755 $(DL)/$(LIBNAME).so.$(PNGVER)
 	chmod 755 $(DL)/libpng.so.0.$(PNGMIN)
 	(cd $(DL); \
-	ln -sf libpng.so.0.$(PNGMIN) libpng.so.0; \
-	ln -sf libpng.so.0 libpng.so; \
-	ln -sf $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
-	ln -sf $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
-	-@if [ ! -d $(DL)/pkgconfig ]; then mkdir $(DL)/pkgconfig; fi
-	-@/bin/rm -f $(DL)/pkgconfig/$(LIBNAME).pc
-	-@/bin/rm -f $(DL)/pkgconfig/libpng.pc
+	$(LN_SF) libpng.so.0.$(PNGMIN) libpng.so.0; \
+	$(LN_SF) libpng.so.0 libpng.so; \
+	$(LN_SF) $(LIBNAME).so.$(PNGVER) $(LIBNAME).so.$(PNGMAJ); \
+	$(LN_SF) $(LIBNAME).so.$(PNGMAJ) $(LIBNAME).so)
+	-@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+	-@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+	-@$(RM_F) $(DL)/pkgconfig/libpng.pc
 	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
 	chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
-	(cd $(DL)/pkgconfig; ln -sf $(LIBNAME).pc libpng.pc)
+	(cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
 
 install-man: libpng.3 libpngpf.3 png.5
-	-@if [ ! -d $(DM) ]; then mkdir $(DM); fi
-	-@if [ ! -d $(DM)/man3 ]; then mkdir $(DM)/man3; fi
-	-@/bin/rm -f $(DM)/man3/libpng.3
-	-@/bin/rm -f $(DM)/man3/libpngpf.3
+	-@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+	-@$(RM_F) $(DM)/man3/libpng.3
+	-@$(RM_F) $(DM)/man3/libpngpf.3
 	cp libpng.3 $(DM)/man3
 	cp libpngpf.3 $(DM)/man3
-	-@if [ ! -d $(DM)/man5 ]; then mkdir $(DM)/man5; fi
-	-@/bin/rm -f $(DM)/man5/png.5
+	-@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+	-@$(RM_F) $(DM)/man5/png.5
 	cp png.5 $(DM)/man5
 
 install-config: libpng-config
-	-@if [ ! -d $(DB) ]; then mkdir $(DB); fi
-	-@/bin/rm -f $(DB)/libpng-config
-	-@/bin/rm -f $(DB)/$(LIBNAME)-config
+	-@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+	-@$(RM_F) $(DB)/libpng-config
+	-@$(RM_F) $(DB)/$(LIBNAME)-config
 	cp libpng-config $(DB)/$(LIBNAME)-config
 	chmod 755 $(DB)/$(LIBNAME)-config
-	(cd $(DB); ln -sf $(LIBNAME)-config libpng-config)
+	(cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
 
 install: install-static install-shared install-man install-config
 
@@ -172,20 +175,20 @@
 	echo
 	echo Testing installed dynamic shared library in $(DL).
 	$(CC) -I$(DI) $(CFLAGS) \
-	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
+	   `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
 	   -L$(DL) -L$(ZLIBLIB) -W1,-rpath $(ZLIBLIB):$(DL) \
-	   -o pngtestd `$(BINPATH)/libpng12-config --ldflags`
+	   -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
 	./pngtestd pngtest.png
 
 test-installed:
 	$(CC) $(CFLAGS) \
-	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
+	   `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
 	   -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
-	   -o pngtesti `$(BINPATH)/libpng12-config --ldflags`
+	   -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
 	./pngtesti pngtest.png
 
 clean:
-	/bin/rm -f *.o libpng.a pngtest pngout.png libpng-config \
+	$(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
 	$(LIBNAME).so $(LIBNAME).so.$(PNGMAJ)* pngtesti \
 	libpng.so.0.$(PNGMIN) \
 	libpng.pc