(Problem also exists with 3.0.16)

I installed gd 1.8.2, libpng 1.0.9, zlib 1.1.3, jpeg 6b, compiled and installed into the default locations.

However, everytime I run PHP configure, it fails to find :

gdImageColorResolve 
gdImageCreateFromPng
gdImageCreateFromJpeg 

I stumbled across this yesterday when building PHP 3.0.16 and found duplicate symbols that were defined
both in PHP and GD.  Downloading PHP 4.0.0 today, I still find the problem.

My work around was to modify config.h and define explicitly by hand :

#define HAVE_GD_PNG  1
#define HAVE_GD_JPG 1
#define HAVE_GD_COLORRESOLVE 1

And modify the Makefile macro APXS_LDFLAGS to add : -ljpeg -lpng