apache2.0.48 and php 4.3.4 problem.

Having some issues installing php after i've installed apache. The problem is make install
fails due to error initializing something in apxs. Apache installs fine.

linux 2.4.xx
gcc 3.3.3
apache 2.0.48 ( built with ./configure --enable-dav --with-ssl --enable-tls
--enable-usertrack --enable-zlib --disable-cgi --enable-so --disable-cgid)
php 4.3.4 (built with ./configure --prefix=/usr/local --with-mysql=/usr/local
--with-apxs2=/usr/local/bin/apxs)

here are the errors with building php;

---------- snip ------------------
### during ./configure ###
checking for Apache 2.0 handler-module support via DSO through APXS... Use of
uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
yes

### during make install ###
Installing PHP CLI binary: /usr/local/bin/
Installing PHP CLI man page: /usr/local/man/man1/
Installing PHP SAPI module: apache2handler
Use of uninitialized value in concatenation (.) or string at /usr/local/bin/apxs line 275.
apxs:Error: no config variable LIBEXECDIR
Usage: apxs -g [-S <var>=<val>] -n <modname>
apxs -q [-S <var>=<val>] <query> ...
apxs -c [-S <var>=<val>] [-o <dsofile>] [-D <name>[=<value>]]
[-I <incdir>] [-L <libdir>] [-l <libname>] [-Wc,<flags>]
[-Wl,<flags>] [-p] <files> ...
apxs -i [-S <var>=<val>] [-a] [-A] [-n <modname>] <dsofile> ...
apxs -e [-S <var>=<val>] [-a] [-A] [-n <modname>] <dsofile> ...
make: *** [install-sapi] Error 1
---------- end of snip ------------------


Anyone know what i'm doing wrong here, i've seen people with apache 2.0.48 and php 3.4.3
working.