When developing on my system I like to use only one version of the core files. If I update the core files from svn it gets updated for all apps I'm working on.
The way I'm using this is explained below:
In my web-root I do an svn export of cake latest:
cd /Users/mwesten/Sites
svn export https://svn.cakephp.org/repo/branches/1.2.x.x/ cake1.2.x.x
Now we have the latest core files on our system.
If I like to create an app I'll do the following:
cp -R /Users/mwesten/Sites/cake1.2.x.x/app /Users/mwesten/Sites/dev/myapp
Then I change the following file to point to the correct core files:
mate /Users/mwesten/Sites/dev/myapp/webroot/index.php
Then add the line
define('CAKE_CORE_INCLUDE_PATH', '/Users/mwesten/Sites/cake1.2.x.x');
before the part saying:
/**
* Do not change
*/
If you go to the page http://localhost/dev/myapp/ it then shows the cakephp welcome page.