Can I install the memcached PHP extension with PECL?

Question

I'm having trouble installing the "memcached" PHP extension from PECL, though I can successfully installed the "memcache" extension. (They are separate PHP extensions.)

For example, these commands work okay:

$ sudo pecl install memcache
$ sudo pecl install APC
$ sudo pecl install oauth

However, attempting to install memcached causes errors:

$ sudo pecl install memcached
...
ld: library not found for -lmemcached
collect2: ld returned 1 exit status
make: *** [memcached.la] Error 1
ERROR: `make' failed

I'm using pecl, memcached, and libmemcached from Mac Ports (macports.org) on a recent Intel Mac. The libmemcached libraries can be found in /opt/local:

/opt/local/include/libmemcached
/opt/local/include/libmemcached/libmemcached_config.h
/opt/local/lib/libmemcached.2.0.0.dylib
/opt/local/lib/libmemcached.2.dylib
/opt/local/lib/libmemcached.a
/opt/local/lib/libmemcached.dylib
/opt/local/lib/libmemcached.la

Any idea what I may be doing wrong?

Answer 1

I don't think you've given quite enough context for anybody to figure out what's wrong. I'd at least need to see the entire gcc/ld command before the "library not found" error.

Also, the right place to ask about this is possibly on the MacPorts mailing list or IRC channel. Each MacPorts package has a maintainer, who is likely the most knowledgeable person about that package.

Answer 2

As you've seen, the new memcached extension, uses libmemcached to do the heavy lifting. If it were Linux, I'd say that it was possible that you don't have /opt/local/lib/ listed in ld.so.conf (and run 'ldconfig').

MaxOSX doesn't use that though. It is, however installable from 'ports' apparently. http://lsimons.wordpress.com/2008/05/01/serious-php-part-1/

Answer 3

Andrei Zmievski (developer of the memcached plugin) kindly answered my email request with the following instructions:

$ pecl download memcached
$ tar zxvf memcached-1.0.0.tgz (or whatever version downloads)
$ cd memcached-1.0.0
$ phpize
$ ./configure --with-libmemcached-dir=/opt/local
$ make
$ sudo make install

This worked perfectly.

Answer 4

same situation here. i had to do the above, but with explicit path names (i run my php etc. out of /opt/local)

• /opt/local/bin/pecl download memcached
• tar zxvf memcached-1.0.0.tgz
• cd memcached-1.0.0
• /opt/local/bin/phpize
• ./configure --prefix=/opt/local --with-php-config=/opt/local/bin/php-config --with-libmemcached-dir=/opt/local
• make
• make install

normally this kind of stuff is pretty simple on os x with macports, but there is no php5-memcached package yet (only one for the older, memcache (no "d") package). oh, an i also had to install an older version of libmemcached, since the latest version didn't compile on os x 10.5.8 for me. oy!