debian/changelog

+tzdata (2019c-3) UNRELEASED; urgency=medium
+
+  * Build the timezone data from tzdata.zi. 
+  * Install leapseconds file /usr/share/zoneinfo.
+
+ -- Aurelien Jarno <aurel32@debian.org>  Mon, 30 Sep 2019 21:56:49 +0200
+
 tzdata (2019c-2) unstable; urgency=medium
 
   [ Paul Eggert ]

debian/rules

@@ -3,20 +3,6 @@
 export LC_ALL=C
 
 TZGEN := $(CURDIR)/tzgen
-VERSION := $(shell dpkg-parsechangelog | sed -e '/^Version/!d;s/^Version: //g;s/.*://g;s/-.*//g')
-
-TIMEZONES := africa \
-             antarctica \
-             asia \
-             australasia \
-             europe \
-             northamerica \
-             southamerica \
-             etcetera \
-             factory \
-             backward \
-             systemv \
-	     pacificnew
 
 TEMPLATES_FILE := $(CURDIR)/debian/tzdata.templates
 TEMPLATES_AREAS := Africa \
@@ -37,19 +23,17 @@ TEMPLATES_AREAS := Africa \
 	dh $@
 
 override_dh_auto_build-indep:
-	# Build the "default" version
-	for zone in $(TIMEZONES); do \
-	  /usr/sbin/zic -d $(TZGEN) -L /dev/null $${zone} ; \
-	  /usr/sbin/zic -d $(TZGEN)/posix -L /dev/null $${zone} ; \
-	  /usr/sbin/zic -d $(TZGEN)/right -L leapseconds $${zone} ; \
-	done
-
-	# Generate a posixrules file
-	ln -s America/New_York $(TZGEN)/posixrules
-
 	# Generate a tzdata.zi file
 	$(MAKE) AWK=gawk BACKWARD="backward pacificnew" VERSION_DEPS= tzdata.zi
 
+	# Generate the leapseconds file
+	$(MAKE) AWK=gawk leapseconds
+
+	# Build the timezone data
+	/usr/sbin/zic -d $(TZGEN) -L /dev/null tzdata.zi ; \
+	/usr/sbin/zic -d $(TZGEN)/posix -L /dev/null tzdata.zi ; \
+	/usr/sbin/zic -d $(TZGEN)/right -L leapseconds tzdata.zi ; \
+
 	# Replace hardlinks by symlinks
 	grep '^L ' $(CURDIR)/tzdata.zi | while read L target name ; do \
 		ln -sf $(TZGEN)/$$target $(TZGEN)/$$name ; \
@@ -58,6 +42,9 @@ override_dh_auto_build-indep:
 	done
 	symlinks -r -s -c $(TZGEN)
 
+	# Generate a posixrules file
+	ln -s America/New_York $(TZGEN)/posixrules
+
 	# Generate the templates file
 	( echo "Template: tzdata/Areas" ; \
 	echo "Type: select" ; \

debian/tzdata.install

 debian/tzconfig /usr/sbin
-tzgen/* usr/share/zoneinfo/
 iso3166.tab usr/share/zoneinfo/
+leap-seconds.list usr/share/zoneinfo/
+leapseconds usr/share/zoneinfo/
 tzdata.zi usr/share/zoneinfo/
+tzgen/* usr/share/zoneinfo/
 zone.tab usr/share/zoneinfo/
 zone1970.tab usr/share/zoneinfo/
-leap-seconds.list usr/share/zoneinfo/