From 875b6ba897cddb1a70c99327b50921de802d3f39 Mon Sep 17 00:00:00 2001
From: Kartik Agaram <vc@akkartik.com>
Date: Mon, 30 Jul 2018 11:31:09 -0700
Subject: 4457

Port recent changes to build_and_test_until to subx/
---
 subx/build_and_test_until | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'subx/build_and_test_until')

diff --git a/subx/build_and_test_until b/subx/build_and_test_until
index 398dcbcb..710e1d55 100755
--- a/subx/build_and_test_until
+++ b/subx/build_and_test_until
@@ -1,5 +1,18 @@
 #!/bin/sh
+# Run tests for just a subset of layers.
+#
+# Usage:
+#   build_and_test_until [file prefix] [test name]
+# Provide the second arg to run just a single test.
 set -e
 
-./clean top-level  # ignore subsidiary tools like tangle and cleave
+# clean previous builds if they were building until a different layer
+touch .until
+PREV_UNTIL=`cat .until`
+if [ "$PREV_UNTIL" != $1 ]
+then
+  ./clean top-level
+  echo $1 > .until
+fi
+
 ./build --until $1  &&  ./subx_bin test $2
-- 
cgit 1.4.1-2-gfad0