IMAP Support on PHP 5.2.3

I have been reconfiguring PHP on our servers (FC6/7) here in order to support PHP’s IMAP extension. I ran the usual ./configure command with –with-imap=shared –with-imap-ssl tagged on the end. At some point the configure failed, sI checked out what happened in the configure log.

$sudo cat config.log

It seems that the c-client development library was not installed - I had spotted these lines at the end of the log:

configure:46571:19: error: /mail.h: No such file or directory
configure:46590: checking for utf8_mime2text signature
configure:46608: gcc -c -I  conftest.c 1>&5
gcc: no input files
configure: failed program was:
#line 46595 "configure"
#include "confdefs.h"

#include 
#include 

int main() {

        SIZEDTEXT *src, *dst;
        utf8_mime2text(src, dst);

; return 0; }
configure:46637: checking for U8T_CANONICAL
configure:46653: gcc -c -I  conftest.c 1>&5
gcc: no input files
configure: failed program was:
#line 46642 "configure"
#include "confdefs.h"

#include 

int main() {

         int i = U8T_CANONICAL;

; return 0; }

The instructions about installing the library on the PHP site point people to the ftp repository in Washington - ftp://ftp.cac.washington.edu/imap/. I decided to try my luck and install it with Yum…

$sudo yum install libc-client-devel

It worked! So I re-ran the configure command. This time I got another error (albeit a minor one):

configure: error: This c-client library is built with Kerberos support. 

      Add --with-kerberos to your configure line. Check config.log for details.

How helpful was that! My final step was therefore to add –with-kerberos to the end of the configure command. Success!