build: unset GOBIN during build

Fixes #14340

Change-Id: I43e1624fafc972fb868708c3857fc8acf1bfbbd7
Reviewed-on: https://go-review.googlesource.com/23255
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Rob Pike <r@golang.org>

src/make.bash

@@ -50,6 +50,9 @@
 # GO_DISTFLAGS: extra flags to provide to "dist bootstrap".
 
 set -e
+
+unset GOBIN # Issue 14340
+
 if [ ! -f run.bash ]; then
 	echo 'make.bash must be run from $GOROOT/src' 1>&2
 	exit 1

src/make.bat

@@ -68,6 +68,7 @@ setlocal
 set GOROOT=%GOROOT_BOOTSTRAP%
 set GOOS=
 set GOARCH=
+set GOBIN=
 "%GOROOT_BOOTSTRAP%\bin\go" build -o cmd\dist\dist.exe .\cmd\dist
 endlocal
 if errorlevel 1 goto fail

src/make.rc

@@ -80,7 +80,7 @@ if(~ $sysname vx32)
 
 if(! ~ $GOHOSTARCH $GOARCH || ! ~ $GOHOSTOS $GOOS){
 	echo '##### Building packages and commands for host,' $GOHOSTOS/$GOHOSTARCH^.
-	GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH \
+	GOOS=$GOHOSTOS GOARCH=$GOHOSTARCH GOBIN= \
 		$GOTOOLDIR/go_bootstrap install -gcflags $"GO_GCFLAGS -ldflags $"GO_LDFLAGS -v $pflag std cmd
 	echo
 }

src/run.bash

@@ -11,6 +11,7 @@ export GOROOT   # the api test requires GOROOT to be set.
 unset CDPATH	# in case user has it set
 unset GOPATH    # we disallow local import for non-local packages, if $GOROOT happens
                 # to be under $GOPATH, then some tests below will fail
+unset GOBIN     # Issue 14340
 
 export GOHOSTOS
 export CC

src/run.bat

@@ -15,6 +15,8 @@ set GOBUILDFAIL=0
 :: we disallow local import for non-local packages, if %GOROOT% happens
 :: to be under %GOPATH%, then some tests below will fail
 set GOPATH=
+:: Issue 14340: ignore GOBIN during all.bat.
+set GOBIN=
 
 rem TODO avoid rebuild if possible
 

src/run.rc

@@ -9,5 +9,6 @@ eval `{go env}
 
 GOPATH = () # we disallow local import for non-local packages, if $GOROOT happens
             # to be under $GOPATH, then some tests below will fail
+GOBIN = () # Issue 14340
 
 exec go tool dist test -rebuild $*