allow for testing go:tip

build.sh

@@ -14,12 +14,16 @@ if [ "$PROTECTED_MODE" == "no" ]; then
 	LDFLAGS="$LDFLAGS -X github.com/tidwall/tile38/core.ProtectedMode=no"
 fi
 
+# Check go install
 if [ "$(which go)" == "" ]; then
 	echo "error: Go is not installed. Please download and follow installation instructions at https://golang.org/dl to continue."
 	exit 1
 fi
 
-vercomp () {
+# Check go version
+GOVERS="$(go version | cut -d " " -f 3)"
+if [ "$GOVERS" != "devel" ]; then
+	vercomp () {
 		if [[ $1 == $2 ]]
 		then
 			echo "0"
@@ -52,11 +56,8 @@ vercomp () {
 		done
 		echo "0"
 		return
-}
-
-GOVERS="$(go version | cut -d " " -f 3)"
-GOVERS="${GOVERS:2}"
-if [ "$GOVERS" != "devel" ]; then
+	}
+	GOVERS="${GOVERS:2}"
 	EQRES=$(vercomp "$GOVERS" "1.5")  
 	if [ "$EQRES" == "-1" ]; then
 		  echo "error: Go '1.5' or greater is required and '$GOVERS' is currently installed. Please upgrade Go at https://golang.org/dl to continue."