Rotating logfiles for MAMP Pro is pretty simple. Under the “Extended” tab for the Hosts setup add this to “Additional parameters for <VirtualHost>”.
CustomLog "|/Applications/MAMP/bin/apache2/bin/rotatelogs /Users/Shared/example_com_www/logs/example_com_www_access_%Y-%m-%d.log 86400" combined ErrorLog "|/Applications/MAMP/bin/apache2/bin/rotatelogs /Users/Shared/example_com_www/logs/example_com_www_errors_%Y-%m-%d.log 86400"
Don’t forget to edit the path…