I'm trying to install memcache on MAMP but I get the warning below, and when I continue it seems to complete properly. I add the line extension=memcache.so to the php.ini and restart MAMP but phpinfo() doesn't list the memcache extension.

$ ./pecl install memcache
downloading memcache-2.2.5.tgz ...
Starting to download memcache-2.2.5.tgz (35,981 bytes)
..........done: 35,981 bytes
11 source files, building
WARNING: php_bin /Applications/MAMP/bin/php5/bin/php appears to have a suffix 5/bin/php, but config variable php_suffix does not match
running: phpize
Configuring for:
PHP Api Version:         20041225
Zend Module Api No:      20060613
Zend Extension Api No:   220060519
Enable memcache session handler support? [yes] : yes

...

Build process completed successfully
Installing '/Applications/MAMP/bin/php5/lib/php/extensions/no-debug-non-zts-20060613/memcache.so'
install ok: channel://pecl.php.net/memcache-2.2.5
configuration option "php_ini" is not set to php.ini location
You should add "extension=memcache.so" to php.ini