problem #1

when ./configure-ing with --with-imap, it claims it cannot
find the IMAP library:
checking for IMAP support... configure: error: Cannot find imap library. Please check your IMAP installation

...but indeed there it is (standard RH 6.2 install WITH imap-devel installed, too.)

PHP3 ./configure --with-imap runs OK.

problem might be in the configure script itself:
(~line 14950)
if test -r "$IMAP_DIR/c-client/c-client.a"; then

this implies that if the imap includes (rfc822.h etc) are in, say, /usr/include/imap (as they are in RH6.2), then the lib must be in /usr/include/imap/c-client/c-client.a . however, quite righteously, c-client.a is in /usr/lib! PHP3 has no problems with finding it.

problem #2
this is more cryptic, and happens in both 4.0 RC2 and PHP3.0.16. (yes, php4 is tested, too, i got around with a few tweaks and managed to get the ./configure script run just fine.) after make and make install, when i restart the web server with apachectl, i get the following message:

Cannot load /usr/local/apache/libexec/libphp3.so into server: /usr/local/apache/libexec/libphp3.so: undefined symbol: gss_mech_krb5

(same with libphp4.so.)

this RH6.2 install uses shadow passwords and MD5 passwords under PAM.

hyeeelp meee!

/etc/ld.so.conf:
---------------------
/usr/X11R6/lib
/usr/kerberos/lib
/usr/i486-linux-libc5/lib
/usr/lib
/usr/local/lib
---------------------