Problems installing gd-2.0.34 on Red Hat

Hi

My problems started when I tried to install the perl GD module (version
GD-2.35), which requires libgd 2.0.28.

So I try to install gd-2.0.34.  I run the configure with both --with-png
and --with-jpeg and get:

   Support for PNG library:          no
   Support for JPEG library:         no
   Support for Freetype 2.x library: no
   Support for Fontconfig library:   no
   Support for Xpm library:          no
   Support for pthreads:             yes

So, I looked at the config output and saw:

checking for deflate in -lz... yes
checking for libpng12-config... no
checking for libpng-config... no
checking png.h usability... no
checking png.h presence... no
checking for png.h... no
checking libpng/png.h usability... no
checking libpng/png.h presence... no
checking for libpng/png.h... No

Hmmm, it looks like I don't have libpng.  BUT...

%> rpm -q -a | grep png
libpng-1.2.2-25
libpng10-1.0.13-15

It looks like I do.... This seems to confirm it:

%> ls /usr/lib/libpng*
/usr/lib/libpng12.so.0        /usr/lib/libpng.so.2
/usr/lib/libpng.so.3
/usr/lib/libpng12.so.0.1.2.2  /usr/lib/libpng.so.2.1.0.13
/usr/lib/libpng.so.3.1.2.2

So looking at the config output, I find that png.h seems to be a major
worry.  I wonder where it is on my SuSe system that has libpng, libgd
and GD installed.  I find that my SuSe system has:

%> find /usr/include -name png.h
/usr/include/png.h
/usr/include/libpng12/png.h

Great, so my SuSe system has png.h and my Red Hat system doesn't.  Whats
the difference?

%redhat> rpm -q -a | grep png
libpng-1.2.2-25
libpng10-1.0.13-15

%suse> rpm -q -a | grep png
libpng-1.2.5-25
libpng-devel-1.2.5-25

So both have libpng installed, but Red Hat doesn't have png.h yet SuSe
does.  The major difference seems to be that SuSe has libpng-devel
installed.

So I looked for an rpm for libpng-devel for Red Hat and I couldn't find
one - none on rpmfind.net, or rpmseek.com....

I realise this is a GD help list, but I bet you all have libpng
installed too, and I bet some of you use Red Hat... So can anyone help
me figure out why my libgd installation is failing on Red Hat, and where
I can get png.h from?  Do I need to install libpng-devel?  If so, where
can I get it for Red Hat?

Many, many thanks

Mick