From 8a47f8a44d98b93c540ea0cf9516fa2ea154b5fa Mon Sep 17 00:00:00 2001
From: Alexander Staubo <alex@bengler.no>
Date: Sun, 22 Feb 2015 22:30:10 -0500
Subject: [PATCH] Makefile: Calculate $(GOROOT), etc. relative to Makefile
 instead of using $(PWD), which is not always available (eg., in debuild).

---
 Makefile         | 4 ++--
 Makefile.INCLUDE | 4 +++-
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/Makefile b/Makefile
index 677804543..f17aad623 100644
--- a/Makefile
+++ b/Makefile
@@ -66,10 +66,10 @@ config:
 	$(MAKE) -C config
 
 $(SELFLINK): $(GOPATH)
-	ln -s $(CURDIR) $@
+	ln -s $(MAKEFILE_DIR) $@
 
 $(GOPATH):
-	cp -a $(CURDIR)/Godeps/_workspace $(GOPATH)
+	cp -a $(MAKEFILE_DIR)/Godeps/_workspace $(GOPATH)
 
 dependencies: $(GOCC) | $(SELFLINK)
 
diff --git a/Makefile.INCLUDE b/Makefile.INCLUDE
index 44d00b49b..742d755f7 100644
--- a/Makefile.INCLUDE
+++ b/Makefile.INCLUDE
@@ -24,7 +24,9 @@ ARCH=$(shell uname -m)
 # Mac OS X release family.
 MAC_OS_X_VERSION ?= 10.8
 
-BUILD_PATH = $(PWD)/.build
+MAKEFILE_DIR ?= $(realpath $(dir $(lastword $(MAKEFILE_LIST))))
+
+BUILD_PATH = $(MAKEFILE_DIR)/.build
 
 GO_VERSION := 1.4
 GOOS = $(subst Darwin,darwin,$(subst Linux,linux,$(subst FreeBSD,freebsd,$(OS))))