From: Urban Wallasch <urban.wallasch@freenet.de>
Date: Wed, 31 Mar 2021 09:55:56 +0000 (+0200)
Subject: * Use wget timestamping feature to decide, if download is necessary.
X-Git-Url: https://git.packet-gain.de/?a=commitdiff_plain;h=HEAD;p=gjedict.git

* Use wget timestamping feature to decide, if download is necessary.
---

diff --git a/Makefile b/Makefile
index da45a65..c520346 100644
--- a/Makefile
+++ b/Makefile
@@ -1,20 +1,24 @@
 
 TARGETS = edict enamdict kanjidic
-#URL = http://ftp.monash.edu.au/pub/nihongo
 URL = http://ftp.edrdg.org/pub/Nihongo
 INSTDIR = /usr/share/gjiten/dics
 
 .PRECIOUS: %.gz
 
-.PHONY: all clean distclean install
+.PHONY: all clean distclean install update
 
 all: $(TARGETS)
 
-%: %.gz
-	zcat $^ | recode EUC-JP..UTF-8 > $@
+.SECONDEXPANSION:
+
+$(TARGETS): $$@.gz
+	zcat $@.gz | recode EUC-JP..UTF-8 > $@
+
+%.gz: update
+	wget -N $(URL)/$@
+
+update:
 
-%.gz:
-	wget $(URL)/$@
 
 clean:
 	-rm -fv $(TARGETS)