Trouble installing PECL module

[Michael Newton]

I've installed PHP 5.4.19 using MacPorts, as well as the php54-sockets
package, and installed PEAR manually (if there's a way to do this with
MacPorts, please let me know!)

I was able to download and compile the events module <
http://pecl.php.net/package/event/1.7.5> without any errors, but when I try
using it in a certain way, I get an error. Digging through the code (I know
just enough to know that I'm in over my head) I found the problem is here
in common.h <
https://bitbucket.org/osmanov/pecl-event/src/74adb2980f6da7c70a00b801aa8e4865ac2f3acc/src/common.h#cl-37
>:

#if PHP_VERSION_ID >= 50301 && (HAVE_SOCKETS || defined(COMPILE_DL_SOCKETS))
# include <ext/sockets/php_sockets.h>
# define PHP_EVENT_SOCKETS_SUPPORT
#endif

HAVE_SOCKETS and COMPILE_DL_SOCKETS are both undefined. Is this a part of
the standard PHP install that's missing?

Forcing either of those flags to be defined causes other problems:
/private/tmp/pear/install/event/src/util.c:30:2: error: unknown type name
'php_socket'; did you mean 'php_socket_t'?
        php_socket   *php_sock;
        ^~~~~~~~~~
        php_socket_t
/opt/local/include/php54/php/main/php_network.h:93:13: note: 'php_socket_t'
declared here
typedef int php_socket_t;
            ^

Thanks for any pointers anyone can provide!
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