When php-4.2.0 is first unpacked there is no lib directory.

This directory is created (and populated) when make is run (after running configure).

This directory (and contents) are not removed by either make clean or make distclean - they should be.

For what it's worth I use the following options to configure:

'./configure' \
'--with-mysql=/usr/local/mysql' \
'--with-apxs2=/usr/local/apache2/bin/apxs' \
'--with-gd=/usr/local' \
'--with-zlib-dir=/usr/local' \
'--with-png-dir=/usr/local' \
'--with-jpeg-dir=/usr/local' \
'--with-ttf=/usr/local' \
'--with-pgsql=/usr/local/pgsql' \
'--with-tsrm-pth' \