Merge pull request #2808 from karalabe/multi-component-gopath

Makefile, bin: Support multiple GOPATH components

Makefile

@@ -41,7 +41,7 @@ bin/gx-go-v%:
 gx_check: ${gx_bin} ${gx-go_bin}
 
 path_check:
-	@bin/check_go_path $(realpath $(shell pwd)) $(realpath $(GOPATH)/src/github.com/ipfs/go-ipfs)
+	@bin/check_go_path $(realpath $(shell pwd)) $(realpath $(addsuffix /src/github.com/ipfs/go-ipfs,$(subst :, ,$(GOPATH))))
 
 deps: go_check gx_check path_check
 	${gx_bin} --verbose install --global

bin/check_go_path

@@ -1,7 +1,6 @@
 #!/bin/sh
 
 PWD=$1
-EXPECTED=$2
 
 if [ -z "$PWD" ]; then
 	echo "must pass in your current working directory"
@@ -13,8 +12,13 @@ if [ -z "$GOPATH" ]; then
 	exit 1
 fi
 
-if [ "$PWD" != "$EXPECTED" ]; then
-	echo "go-ipfs must be built from within your \$GOPATH directory."
-	echo "expected '$EXPECTED' but got '$PWD'"
-	exit 1
-fi
+while [ ${#} -gt 1 ]; do
+	if [ "$PWD" = "$2" ]; then
+		exit 0
+	fi
+	shift
+done
+
+echo "go-ipfs must be built from within your \$GOPATH directory."
+echo "expected within '$GOPATH' but got '$PWD'"
+exit 1