Can't compile PHP4 with OpenLDAP

Hi, I have been trying to compile PHP4.0.0 with OpenLDAP 1.2.11 but without any success. The configure options used are as follow: ./configure --with-apxs=/usr/local/apache/bin/apxs \ --with-mysql \ --with-ldap=/usr/local \ --enable-versioning \ --enable-track-vars Executing "make" gets the following error: /usr/local/lib/libgd.a(gd.o): In function `gdImageColorResolve': gd.o(.text+0x6a0): multiple definition of `gdImageColorResolve' ext/gd/.libs/libgd.al(gd.lo):/usr/local/src/php-4.0.0/ext/gd/gd.c:275: first defined here /usr/bin/ld: Warning: size of symbol `gdImageColorResolve' changed from 243 to 226 in gd.o collect2: ld returned 1 exit status make[1]: *** [libphp4.la] Error 1 make[1]: Leaving directory `/usr/local/src/php-4.0.0' make: *** [all-recursive] Error 1 For your info, I'm using apache 1.3.12. Any help is very much appreciated. regards, Kok Jeng, Loh