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-rw-r--r--ext/date/prereq.mk19
1 files changed, 19 insertions, 0 deletions
diff --git a/ext/date/prereq.mk b/ext/date/prereq.mk
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index 0000000000..b5d271a32c
--- /dev/null
+++ b/ext/date/prereq.mk
@@ -0,0 +1,19 @@
+.SUFFIXES: .list
+
+.list.h:
+ gperf --ignore-case -L ANSI-C -C -c -P -p -j1 -i 1 -g -o -t -N $(*F) $< \
+ | sed -f $(top_srcdir)/tool/gperf.sed \
+ > $(@F)
+
+zonetab.h: zonetab.list
+
+.PHONY: update-zonetab
+update-zonetab:
+ $(RUBY) -C $(srcdir) update-abbr
+
+.PHONY: update-nothing
+update-nothing:
+
+update = nothing
+
+zonetab.list: update-$(update)