TO GET GD COMPILED, ADD THE FOLLOWING LINE TO Makefile.PL:

  @LIBS = ("-liconv", grep { $_ !~ /dylib/ } @LIBS);
  
Diff is:

*** Makefile.PL~        Mon Aug  8 18:24:32 2005
--- Makefile.PL Tue Aug 23 00:16:49 2005
***************
*** 30,35 ****
--- 30,37 ----
  @LIBPATH = qw(-L/usr/lib/X11 -L/usr/X11R6/lib -L/usr/X11/lib -L/usr/lib) unless @LIBPATH;
  @LIBS    = qw(-lgd -lpng -lz) unless @LIBS;
  
+ @LIBS = ("-liconv", grep { $_ !~ /dylib/ } @LIBS);
+ 
  # support for AMD64 libraries
  if (-d '/usr/lib64') {
    my @libs64 = map {my $a = $_; $a=~ s/lib$/lib64/; $a} @LIBPATH;