compiler errors in gd.c: In function `php_minit_gd'

I got the following compile error trying to build 4.0.6 on a Cobalt RAQ 3. Any ideas why or how to fix it? /bin/sh /home/sites/home/users/admin/working/php-4.0.6/libtool --silent --mode=compi le gcc -I. -I/home/sites/home/users/admin/working/php-4.0.6/ext/gd -I/home/sit es/home/users/admin/working/php-4.0.6/main -I/home/sites/home/users/admin/wo rking/php-4.0.6 -I/usr/include/apache -I/home/sites/home/users/admin/working /php-4.0.6/Zend -I/usr/include/imap -I/usr/interbase/include -I/home/sites/h ome/users/admin/working/php-4.0.6/ext/mysql/libmysql -I/home/sites/home/user s/admin/working/php-4.0.6/ext/xml/expat/xmltok -I/home/sites/home/users/admi n/working/php-4.0.6/ext/xml/expat/xmlparse -I/home/sites/home/users/admin/wo rking/php-4.0.6/TSRM -DLINUX=2 -DNO_DBM_REWRITEMAP -DMOD_SSL=202108 -DMOD_P ERL -DUSE_PERL_SSI -Dbool=char -DHAS_BOOL -DEAPI -DBIG_SECURITY_HOLE -DCOBAL T_RAQ_LED -DSUPPORT_UTF8 -DXML_BYTE_ORDER=12 -g -O2 -c gd.c gd.c: In function `php_minit_gd': gd.c:296: `gdPie' undeclared (first use in this function) gd.c:296: (Each undeclared identifier is reported only once gd.c:296: for each function it appears in.) gd.c:297: `gdChord' undeclared (first use in this function) gd.c:298: `gdNoFill' undeclared (first use in this function) gd.c:299: `gdEdged' undeclared (first use in this function) gd.c: In function `php_if_imagecreatetruecolor': gd.c:577: warning: assignment makes pointer from integer without a cast make[3]: *** [gd.lo] Error 1 Thanks