gd with php

When I configured php I didn't know exactly where to point to gd, ttf and others so I did the following. './configure' '--prefix=/export/u7' '--libdir=/export/u7/lib' '--includedir=/export/u7/include' '--includedir=/export/u7/include/freetype' '--with-apache=../apache_1.3.12' '--enable-ftp' '--with-gd=/export/u7' '--with-jpeg-dir=/export/u7' '--with-ttf=/export/u7' '--with-mysql=/export/u7/mysql' '--enable-yp' '--with-zlib=/export/u7' '--with-config-file-path=/export/u7/lib' However, when the configure was running I saw that it didn't find ImageCreate and a few other things. Does it mean it hasn't built it or it just didn't find the right directory ? I installed the gd files, jpeg files and ttf files all in /export/u7 by doing a prefix=/export/u7 to all those including zlib. Is this the right way to do it ? Thank You Sunil