From 65519a0367c333c50b8808ed57504b3aad17b6f5 Mon Sep 17 00:00:00 2001
From: Jeromy <jeromyj@gmail.com>
Date: Tue, 23 Feb 2016 22:26:37 -0800
Subject: [PATCH] move gopath check to separate script and use realpath for
 symlink handling

License: MIT
Signed-off-by: Jeromy <jeromyj@gmail.com>
---
 Makefile          |  2 +-
 bin/check_go_path | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100755 bin/check_go_path

diff --git a/Makefile b/Makefile
index f346e595a..d2f1bc5ca 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,7 @@ gxgo_upgrade:
 	go get -u github.com/whyrusleeping/gx-go
 
 path_check:
-	test "$(shell pwd)" = "$(GOPATH)/src/github.com/ipfs/go-ipfs" || (echo "go-ipfs must be built from within your \$$GOPATH directory." && false)
+	@bin/check_go_path
 
 gx_check:
 	@bin/check_gx_program "gx" "0.3" 'Upgrade or install gx using your package manager or run `make gx_upgrade`'
diff --git a/bin/check_go_path b/bin/check_go_path
new file mode 100755
index 000000000..eb157e29b
--- /dev/null
+++ b/bin/check_go_path
@@ -0,0 +1,20 @@
+#!/bin/sh
+
+if [ -z "$GOPATH" ]; then
+	echo "GOPATH not set, you must have go configured properly to install ipfs"
+	exit 1
+fi
+
+if ! type -f realpath > /dev/null; then
+	echo "program 'realpath' not found, it is required for this check"
+	exit 1
+fi
+
+PWD=$(pwd)
+REALPWD=$(realpath "$PWD")
+EXPECTED="$GOPATH/src/github.com/ipfs/go-ipfs"
+
+if [ "$REALPWD" != "$EXPECTED" ]; then
+	echo "go-ipfs must be built from within your \$GOPATH directory."
+	exit 1
+fi