build: Install links listed in "backward" table.

1 files changed, 18 insertions, 0 deletions

diff --git a/build b/build
index 94eedbc..24d2f22 100755
--- a/build
+++ b/build
@@ -46,4 +46,22 @@ install: build
 				"tzdata-$${t}.data/usr/share/zoneinfo/$${src}"; \
 		done; \
 	done
+	grep '^Link' src/backward | while read type dest src etc; do \
+		t="$$(cd src &&  grep -l \
+			"^Zone[ 	][ 	]*$${dest}[ 	].*$$" \
+			$(tables))"; \
+		link="$${src}" up=''; \
+		while [ "$${link#*/}" != "$${link}" ] && \
+		      [ "$${link%%/*}" = "$${dest%%/*}" ]; do \
+			link="$${link#*/}"; \
+			dest="$${dest#*/}"; \
+		done; \
+		while [ "$${link#*/}" != "$${link}" ]; do \
+			link="$${link#*/}"; \
+			up="../$${up}"; \
+		done; \
+		src="tzdata-$${t}.data/usr/share/zoneinfo/$${src}"; \
+		mkdir -p "$${src%/*}"; \
+		ln -sf "$${up}$${dest}" "$${src}"; \
+	done
 	ln -sf . tzdata-common.data/usr/share/zoneinfo/posix