I’ve just installed Yosemite and I managed to change the DocumentRoot without any problems. First I modified the following lines in /private/etc/apache2/httpd.conf:
DocumentRoot "/Library/WebServer/Documents"
<Directory "/Library/WebServer/Documents">
Options FollowSymLinks Multiviews
AllowOverride None
</Directory>
to:
DocumentRoot "<CUSTOM_PATH>"
<Directory "<CUSTOM_PATH>">
Options Indexes FollowSymLinks Multiviews
AllowOverride All
</Directory>
The above will set a custom DocumentRoot, enable directory listing and allow configurations to be overridden by .htaccess files.
Then I restarted apache by executing sudo apachectl restart.
Another approach would be to set up a virtual host. First make sure so that the following line is uncommented in your /private/etc/apache2/httpd.conf file:
# Virtual hosts
#Include /private/etc/apache2/extra/httpd-vhosts.conf
Then you can add the following in the httpd-vhosts.conf file:
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot "/Library/WebServer/Documents"
ServerName example.local
ErrorLog "/private/var/log/apache2/example.local-error_log"
CustomLog "/private/var/log/apache2/example.local-access_log" common
<Directory "/Library/WebServer/Documents">
Options Indexes FollowSymLinks Multiviews
AllowOverride All
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
The above will setup a document root for a new virtual host named example.local and enable directory listing and allow configurations to be overridden by .htaccess files. Of course your also will need to restart apache for the changes to take effect:
sudo apachectl restart