There is a little problem with the configure script, when configuring with DSO support through apache.

configure options:  ./configure     --prefix=/usr/local/php \
                        --with-apxs=/usr/local/apache/bin/apxs \
                        --with-mysql  \
                        --with-imap=../imap-4.7c \
                        --with-ldap=/usr/local/openldap

You get the error:

Configuring SAPI modules
checking for AOLserver support... no
checking for Apache module support via DSO through APXS... ./configure: !: not found

I fixed the problem by changing line 2692:


dsafian:php-4.0.0> diff configure configure.new
2692c2692
<     if ! $APXS -q CFLAGS >/dev/null 2>&1; then
---
>     if !$APXS -q CFLAGS >/dev/null 2>&1; then