Informações para instalar essa extensão PECL pode ser encontrada no capítulo Instalação de Extensões PECL. Informações adicionais como novas versões, downloads, arquivos fontes, manutenções e CHANGELOG podem ser encontrados aqui: » http://pecl.php.net/package/memcached.
If libmemcached is installed in a non-standard location, use --with-libmemcached-dir=DIR switch, where DIR is the libmemcached install prefix. This directory has to contain the include/libmemcached/memcached.h file.
Zlib is required for compression support. To specify non-standard installation of Zlib, use --with-zlib-dir=DIR switch, where DIR is the Zlib install prefix.
Session handler support is enabled by default. To disable it, use --disable-memcached-session switch.
SASL authentication support is disabled by default. To enable it, use --enable-memcached-sasl switch. This requires that libsasl2 has been installed and that libmemcached has been built with SASL support enabled.