Go 1.8 do not require env GOPATH to be set and make will fail if it isn't set.

diff --git a/Makefile b/Makefile
index 10a6cbf513d14d88e5916c91fc545d03e6486bbb..e48243c6dfe6963bb9421cee3e586ab5760a38f9 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@
 # limitations under the License.
 
 GO     := GO15VENDOREXPERIMENT=1 go
-GOPATH := $(firstword $(subst :, ,$(GOPATH)))
+GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))
 PROMU  ?= $(GOPATH)/bin/promu
 pkgs    = $(shell $(GO) list ./... | grep -v /vendor/)