From 21339843186a3aecd5f9e06fae12a5b255dfbc12 Mon Sep 17 00:00:00 2001
From: Adam Ierymenko <adam.ierymenko@gmail.com>
Date: Tue, 3 Dec 2013 13:47:13 -0800
Subject: [PATCH] Build instructions for tap-mac.

---
 .gitignore                          |  1 +
 BUILDING.txt                        | 12 ++++++++++++
 ext/tap-mac/tuntap/src/tap/Makefile |  4 ++--
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index 9e21458ac..2fb0a651e 100755
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 /ext/llvm-g++-Xcode4.6.2
+/ext/llvm-g++-Xcode4.6.2.tar.bz2
 /zerotier-*
 /build-ZeroTierUI-*
 /ZeroTierUI/*.user
diff --git a/BUILDING.txt b/BUILDING.txt
index 761a50de3..53c9d1a0c 100644
--- a/BUILDING.txt
+++ b/BUILDING.txt
@@ -18,6 +18,18 @@ make -f Makefile.linux
 
 Edit Makefile.linux if you want to change between debug or release build.
 
+If you are building ext/tap-mac you will need a different version of the
+OSX gcc compiler chain than what currently ships (clang). We've got a copy
+available here:
+
+http://download.zerotier.com/dev/llvm-g++-Xcode4.6.2.tar.bz2
+
+Un-tar this into ext/ (it's excluded in .gitignore) and then 'make' in
+ext/tap-mac/tuntap/src/tap.
+
+Most users should not need to build tap-mac, since a binary is included
+in ext/bin.
+
 -- Windows
 
 Here be dragons.
diff --git a/ext/tap-mac/tuntap/src/tap/Makefile b/ext/tap-mac/tuntap/src/tap/Makefile
index 58e582da0..ee1f5457f 100644
--- a/ext/tap-mac/tuntap/src/tap/Makefile
+++ b/ext/tap-mac/tuntap/src/tap/Makefile
@@ -29,8 +29,8 @@ LDFLAGS = -Wall -mkernel -nostdlib -r -lcc_kext -arch i386 -arch x86_64 -Xlinker
 
 #CCP = g++
 #CC = gcc
-CCP = $(HOME)/Code/llvm-g++-Xcode4.6.2/bin/llvm-g++
-CC = $(HOME)/Code/llvm-g++-Xcode4.6.2/bin/llvm-gcc
+CCP = ../../../../llvm-g++-Xcode4.6.2/bin/llvm-g++
+CC = ../../../../llvm-g++-Xcode4.6.2/bin/llvm-gcc
 
 all: $(KMOD_BIN) bundle