PHP 4.1.2 & Gd2

Hi, I'm trying to install GD2 in PHP, and can't get it compiled. It keeps saying: In file included from gd.c:36: php_gd.h:69: warning: static declaration for `gdImageColorResolve' follows non-static gd.c:92: conflicting types for `gdIOCtx' /usr/include/gd_io.h:18: previous declaration of `gdIOCtx' make[3]: *** [gd.lo] Error 1 ./configure --with-apxs=/usr/local/apache/bin/apxs --with-curl=/usr/local/lib --with-mysql=/usr/local/mysql -- with-zlib --enable-track-vars --with-config-file-path=/usr/local/apache/php --with-gd=/usr --with-ldap --with- interbase=/opt/interbase --with-ttf GD 1.8.x works great, this only happens with GD2. Any suggestions? Thanks, Jeroen