update the homebrew docs

MacInstallation_Homebrew.md

@@ -1,91 +1,33 @@
-<!-- Name: MacInstallation/Homebrew -->
-<!-- Version: 6 -->
-<!-- Last-Modified: 2011/05/20 14:50:02 -->
-<!-- Author: springmeyer -->
-
 # Installing Mapnik on OS X with Homebrew
 
-
 ## Install Homebrew
-Install homebrew as per: http://github.com/mxcl/homebrew/wiki/installation
 
-Basically do:
+First, make sure you have homebrew [installed](http://github.com/mxcl/homebrew/wiki/installation]
 
-```sh
-    curl -Lsf http://github.com/mxcl/homebrew/tarball/master | tar xz --strip 1 -C/usr/local
-    brew install git
-    git clone http://github.com/mxcl/homebrew.git /tmp/homebrew
-    mv /tmp/homebrew/.git /usr/local/
-    rm -rf /tmp/homebrew
-```
+## Install Options
 
-Yes, feel free to chmod /usr/local like:
-
-    sudo chown -R $USER /usr/local
-
-*But be aware:* running chmod on /usr/local will break things like postgres installed via Kyngchaos in `/usr/local/pgsql`. You will see:
-
-    psql: could not connect to server: Connection refused
-    	Is the server running locally and accepting
-    	connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
-
-This can be fixed by simply re-installing postgres (which will fix permissions) from: http://www.kyngchaos.com/software/postgres
-
-## Installing Mapnik 0.7.x via Homebrew
-
-Simply type:
+Now you can either 1) install Mapnik itself with homebrew (which will automatically install all dependencies at the same time) or 2) install all Mapnik dependencies via homebrew and then Mapnik from source.
 
+### To install the latest Mapnik release do:
 
 ```sh
     brew install mapnik
 ```
 
-Be aware that this will take a long time - hours maybe. The main reason is that homebrew installs *many* boost libraries that mapnik does not need and mapnik will not start building until boost is done.
-
-## Installing Mapnik 2.0 via Homebrew
-
-Homebrew only provides mapnik 0.7.x currently, so to install mapnik2 we need to create a new "formula".
-
-Assuming that your homebrew installation is standard and in `/usr/local/Library' then just do this:
+### To install Mapnik from source using homebrew for dependencies do:
 
 ```sh
-    wget https://gist.github.com/raw/983887/mapnik2.rb -O /usr/local/Library/Formula/mapnik2.rb
-```
-
-Then do:
-
-```sh
-    brew install mapnik2
-```
-
-Or you could copy the mapnik2.rb formula and apply a simple patch to it:
-
-
-```diff
-    diff --git a/Library/Formula/mapnik.rb b/Library/Formula/mapnik.rb
-    index 04be7b7..e160920 100644
-    --- a/Library/Formula/mapnik.rb
-    +++ b/Library/Formula/mapnik.rb
-    @@ -1,7 +1,7 @@
-     require 'formula'
-     
-    -class Mapnik < Formula
-    -  url 'http://download.berlios.de/mapnik/mapnik-0.7.1.tar.gz'
-    +class Mapnik2 < Formula
-    +  head 'http://svn.mapnik.org/trunk/', :using => :svn
-       homepage 'http://www.mapnik.org/'
-       md5 '3a070fdd7c6a3367ad78d95c2387b03b'
-     
-    @@ -17,11 +17,6 @@ class Mapnik < Formula
-       def install
-         ENV.x11 # for freetype-config
-     
-    -    # Allow compilation against boost 1.46
-    -    inreplace ["src/datasource_cache.cpp", "src/libxml2_loader.cpp", "src/load_map.cpp", "
-    -      "#include <boost/filesystem/operations.hpp>",
-    -      "#define BOOST_FILESYSTEM_VERSION 2\n#include <boost/filesystem/operations.hpp>"
-    -
-         icu = Formula.factory("icu4c")
-         system "scons",
-             "PREFIX=#{prefix}",
+brew install icu4c
+brew link icu4c
+brew install boost
+brew install proj
+brew install jpeg
+brew install libtiff
+brew install gdal --with-libtiff=/usr/local/lib
+brew install postgis
+brew install cairo
+git clone https://github.com/mapnik/mapnik.git
+cd mapnik
+./configure CXX="clang++" JOBS=`sysctl -n hw.ncpu`
+make install
 ```