clean.bash: fix standalone runs
R=rsc
CC=golang-dev
https://golang.org/cl/1933043
diff --git a/src/clean.bash b/src/clean.bash
index 53fddd6..a62f339 100755
--- a/src/clean.bash
+++ b/src/clean.bash
@@ -5,20 +5,15 @@
set -e
-if [ -z "$GOROOT" ] ; then
- echo '$GOROOT not set'
+if [ ! -f env.bash ]; then
+ echo 'clean.bash must be run from $GOROOT/src' 1>&2
exit 1
fi
-if [ -z "$GOOS" ] ; then
- echo '$GOOS not set'
- exit 1
+. ./env.bash
+if [ ! -f Make.inc ] ; then
+ GOROOT_FINAL=${GOROOT_FINAL:-$GOROOT}
+ sed 's!@@GOROOT@@!'"$GOROOT_FINAL"'!' Make.inc.in >Make.inc
fi
-if [ -z "$GOARCH" ] ; then
- echo '$GOARCH not set'
- exit 1
-fi
-
-GOBIN="${GOBIN:-$HOME/bin}"
if [ "$1" != "--nopkg" ]; then
rm -rf "$GOROOT"/pkg/${GOOS}_$GOARCH
