isolinux.mk: Now automatically using latest version

make/isolinux.mk

@@ -1,19 +1,24 @@
 # == defs
 
-URL = http://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-3.11.tar.bz2
-DLOAD_DIR = /home/samba/dat/share/exe/linux/syslinux
-DLOAD_PKG = $(DLOAD_DIR)/$(notdir $(URL))
-BUILD_DIR = cd_root
-DIRS = $(DLOAD_DIR) $(BUILD_DIR)
-UNPACK_DIR = $(notdir $(shell echo $(DLOAD_PKG) | sed 's/.tar.bz2$$//'))
-ISO_IMAGE = image.iso
+URL_BASE     = http://www.kernel.org/pub/linux/utils/boot/syslinux
+URL_FILE     = SYSLINUX_URL
+URL          = $(shell cat $(URL_FILE))
+DLOAD_DIR    = /home/samba/dat/share/exe/linux/syslinux
+BUILD_DIR    = cd_root
+DIRS         = $(DLOAD_DIR) $(BUILD_DIR)
+UNPACK_DIR   = isolinux
+ISO_IMAGE    = image.iso
 ISOLINUX_BIN = $(UNPACK_DIR)/isolinux.bin
-INITRD = /boot/initrd
+INITRD       = /boot/initrd
 
 CD_FILES = \
 	$(UNPACK_DIR)/com32/modules/menu.c32 \
 	$(ISOLINUX_BIN)
 	
+define SYSLINUX_BASE
+	$(notdir $(shell sed 's/.tar.bz2$$//' $(URL_FILE)))
+endef
+
 # == targets
 
 all: $(ISO_IMAGE)
@@ -21,7 +26,7 @@ install:
 clean:
 	rm -rf *.done
 	rm -rf $(BUILD_DIR) $(UNPACK_DIR)
-	rm -f $(ISO_IMAGE)
+	rm -f $(ISO_IMAGE) $(URL_FILE) $(URL_FILE).tmp
 
 distclean: clean
 
@@ -31,16 +36,21 @@ dirs.done:
 	mkdir -p $(DIRS)
 	touch $@
 
-$(DLOAD_PKG):
-	wget -c $(URL) -P $(DLOAD_DIR)
+$(URL_FILE):
+	lynx -dump $(URL_BASE) | \
+		sed '/syslinux-.*\.tar\.bz2$$/ !d; s/ .*http:/http:/' |\
+		tail -1 > $@.tmp
+	mv $@.tmp $@
+
+dload.done: $(URL_FILE)
+	wget -c $(shell cat $<) -P $(DLOAD_DIR)
+	touch $@
 
 $(UNPACK_DIR)/com32/modules/menu.c32: unpack.done
 
-dload.done: $(DLOAD_PKG)
-	touch $@
-
-unpack.done: dload.done
-	tar -xjf $(DLOAD_PKG)
+unpack.done: $(URL_FILE) dload.done
+	tar -xjf $(shell echo $(DLOAD_DIR)/$(SYSLINUX_BASE).tar.bz2 | sed 's/ //g')
+	mv $(SYSLINUX_BASE) $(UNPACK_DIR)
 	touch $@
 
 GENERATE = sh $(MODDIR)/devutil/scripts/generate_boot_medium.sh