Error on PHP4 install

Hi, Just tried to install PHP4 and received the following errors at the end of the make - can anyone clue me in on how I can sort this out gd.c: In function `php_if_imagecreatefromgif': gd.c:552: `gdImageCreateFromGif' undeclared (first use in this function) gd.c:552: (Each undeclared identifier is reported only once gd.c:552: for each function it appears in.) gd.c: In function `php_if_imagegif': gd.c:709: `gdImageGif' undeclared (first use in this function) make[3]: *** [gd.lo] Error 1 make[3]: Leaving directory `/home/sites/home/users/admin/php-4.0.3pl1/ext/gd' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/home/sites/home/users/admin/php-4.0.3pl1/ext/gd' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/sites/home/users/admin/php-4.0.3pl1/ext' make: *** [all-recursive] Error 1 do I need to do something to fix the gd libs ? Jim Carey