php 5.2.3 configure/install problem

Hi, I configured php5.2.3 on Sparc Soalris 2.9 using gcc 3.4.6 and encountered the following problem: # ./configure --prefix=/usr/local/php.5.23 --with-apxs=/usr/apache2/bin/apxs \ > --with-gettext --with-dom \ > --with-iconv --enable-mbstring=all --enable-mbregex \ > --with-mysql=/usr/local/mysql creating cache ./config.cache checking for Cygwin environment... no checking for mingw32 environment... no checking for egrep... egrep checking for a sed that does not truncate output... /usr/local/bin/sed expr: syntax error ../configure: test: argument expected The php compiled will be used for the horde package on building webmail. I obtained similar problem when configured with php4.4.7 Please help/advise on solving the problem. Thank you. Regards Alan