not too sure about this:

the uw-imap lib is usually called libc-client.a - kde comes with a libimap.a
which (when used instead of libc-client.a) will break the build. so
i have reversed the detection for the imap-libs - 1st look for the variations
of libc-client and (if 'em are not found) try -limap. i hope this breaks
nobodies setup!

we should really add a AC_TRY_COMPILE for all extensions that get added thru
configure!

ext/imap/config.m4

@@ -122,7 +122,7 @@ if test "$PHP_IMAP" != "no"; then
       ln -s "$IMAP_DIR/lib/c-client.a" "$IMAP_DIR/lib/libc-client.a" >/dev/null 2>&1
     fi
 
-    for lib in imap c-client4 c-client; do
+    for lib in c-client4 c-client imap; do
       IMAP_LIB=$lib
       IMAP_LIB_CHK(lib)
       IMAP_LIB_CHK(c-client)