build: Replace install commands with $(INSTALL) function

install is non-standard and awkward at best.  Without the -t option, the
destination is assumed to be a non-directory file, even when it isn't
(e.g. when a trailing "/" is used).  BusyBox install didn't get a -t
option until version 1.23.0.

1 files changed, 17 insertions, 8 deletions

diff --git a/build b/build
index 55f53cf..631f2ee 100755
--- a/build
+++ b/build
@@ -10,6 +10,15 @@ tables = \
 	southamerica \
 	etcetera
 
+INSTALL = set -e; \
+	INSTALL() { \
+		i=0; for d in "$${@}"; do : $$((i += 1)); done; \
+		mkdir -pv "$${d}"; \
+		for s in "$${@}"; do [ $$((i -= 1)) -eq 0 ] && break; \
+			cp -v "$${s}" "$${d}"; \
+		done; \
+	}; INSTALL
+
 nop:
 	@:
 
@@ -18,15 +27,15 @@ build:
 	touch $@
 
 install: build
-	install -D src/tzselect     tzselect.data/usr/bin
-	install -D src/zdump           zdump.data/usr/bin
-	install -D src/zic               zic.data/usr/sbin
-	install -D src/tzfile.5   tzdata-doc.data/usr/share/man/man5
-	install -D src/tzselect.8 tzdata-doc.data/usr/share/man/man8
-	install -D src/zdump.8    tzdata-doc.data/usr/share/man/man8
-	install -D src/zic.8      tzdata-doc.data/usr/share/man/man8
+	$(INSTALL) src/tzselect     tzselect.data/usr/bin
+	$(INSTALL) src/zdump           zdump.data/usr/bin
+	$(INSTALL) src/zic               zic.data/usr/sbin
+	$(INSTALL) src/tzfile.5   tzdata-doc.data/usr/share/man/man5
+	$(INSTALL) src/tzselect.8 tzdata-doc.data/usr/share/man/man8
+	$(INSTALL) src/zdump.8    tzdata-doc.data/usr/share/man/man8
+	$(INSTALL) src/zic.8      tzdata-doc.data/usr/share/man/man8
 	# Install country and zone tables used by tzselect.
-	install -D src/*.tab tzdata.data/usr/share/zoneinfo
+	$(INSTALL) src/*.tab tzdata.data/usr/share/zoneinfo
 	# Install the Factory zone and make it the default localtime.
 	src/zic -d tzdata.data/usr/share/zoneinfo src/factory
 	mkdir -p tzdata.data/etc