From 7e704d7ac997387341e920e1757c24cac0efe5e9 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Mon, 8 Feb 2016 16:36:45 -0500
Subject: Refactor the build system. Avoid recursive make.

This looks like a lot, but more things should "just work".

We have `make dist` now!
---
 write-ifchanged | 11 +++++++++++
 1 file changed, 11 insertions(+)
 create mode 100755 write-ifchanged

(limited to 'write-ifchanged')

diff --git a/write-ifchanged b/write-ifchanged
new file mode 100755
index 0000000..c65fa16
--- /dev/null
+++ b/write-ifchanged
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+outfile=$1
+tmpfile="$(dirname "$outfile")/.tmp${outfile##*/}"
+
+cat > "$tmpfile" || exit $?
+if cmp -s "$tmpfile" "$outfile"; then
+        rm -f "$tmpfile" || :
+else
+        mv -f "$tmpfile" "$outfile"
+fi
-- 
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