From 0290d51b4ada1615853b2dc368902b2a310392f3 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Wed, 5 Aug 2015 13:39:07 -0400
Subject: [PATCH] build: clean current tree in clean.bash

Otherwise clean.bash cleans $GOROOT, which might be something else entirely.

Fixes #12003.

Change-Id: I2ad5369017dde6db25f0c0514bc27c33d0a8bf54
Reviewed-on: https://go-review.googlesource.com/13251
Reviewed-by: David Crawshaw <crawshaw@golang.org>
---
 src/clean.bash | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/src/clean.bash b/src/clean.bash
index 8c23e010e89..39fe36d46df 100755
--- a/src/clean.bash
+++ b/src/clean.bash
@@ -5,13 +5,18 @@
 
 set -e
 
-eval $(go tool dist env)
+if [ ! -f run.bash ]; then
+	echo 'clean.bash must be run from $GOROOT/src' 1>&2
+	exit 1
+fi
+export GOROOT="$(cd .. && pwd)"
 
-if [ ! -x $GOTOOLDIR/dist ]; then
-	echo 'cannot find $GOTOOLDIR/dist; nothing to clean' >&2
+gobin="${GOBIN:-../bin}"
+if ! "$gobin"/go help >/dev/null 2>&1; then
+	echo 'cannot find go command; nothing to clean' >&2
 	exit 1
 fi
 
-"$GOBIN/go" clean -i std
-"$GOBIN/go" tool dist clean
-"$GOBIN/go" clean -i cmd
+"$gobin/go" clean -i std
+"$gobin/go" tool dist clean
+"$gobin/go" clean -i cmd