From 605dcd5a87e5203fcbb9997f6304dc541e692634 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Tue, 17 May 2016 18:58:18 -0400
Subject: Makefile: track variable dependencies

---
 Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index bbe0725..26a1f3d 100644
--- a/Makefile
+++ b/Makefile
@@ -49,9 +49,12 @@ am_sys_files =                      $(targets)  $(pkgconffile)
 
 # Pattern rules
 
-%: %.in
+%: %.in .var.sbindir .var.pkgconffile
 	sed -e 's|@sbindir@|$(sbindir)|' -e 's|@pkgconffile@|$(pkgconffile)|' < $< > $@
 
+.var.%: FORCE
+	@printf '%s' '$($*)' | ./write-ifchanged $@
+
 $(DESTDIR)$(sbindir)/%: %
 	install -Dm755 $< $@
 
-- 
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