My 'configure' command is:
./configure --with-gd-inc=/usr/local/include --with-gd-lib=/usr/local/lib
The relevant output from this is as follows:
checking for gdImagePng in -lgd (order 1)... no
checking for gdImagePng in -lgd (order 2)... no
checking for gdImagePng in -lgd (order 3)... no
checking for gdImagePng in -lgd (order 4)... no
*** GD, PNG, and/or JPEG libraries could not be located... *********
Boutell's GD library is required to compile the statusmap, trends
and histogram CGIs. Get it from boutell.com/gd/, compile
it, and use the --with-gd-lib and --with-gd-inc arguments to specify
the locations of the GD library and include files.
NOTE: In addition to the gd-devel library, you'll also need to make
sure you have the png-devel and jpeg-devel libraries installed
on your system.
NOTE: After you install the necessary libraries on your system:
1. Make sure /etc/ld.so.conf has an entry for the directory in
which the GD, PNG, and JPEG libraries are installed.
2. Run 'ldconfig' to update the run-time linker options.
3. Run 'make clean' in the Nagios distribution to clean out
any old references to your previous compile.
4. Rerun the configure script.
NOTE: If you can't get the configure script to recognize the GD libs
on your system, get over it and move on to other things. The
CGIs that use the GD libs are just a small part of the entire
Nagios package. Get everything else working first and then
revisit the problem. Make sure to check the nagios-users
mailing list archives for possible solutions to GD library
problems when you resume your troubleshooting.
There is a header file at /usr/local/include/gd.h and libraries at /usr/local/lib/libgd.a and /usr/local/lib/libgd.so.20.33 that 'configure' should see, but it doesn't. It was implied but not stated, this works fine on OpenBSD 3.8 with gd-1.8. This is on OpenBSD with gd-2.0. The rest of Nagios compiles and installs just fine. I'm only now going back to get the status map and trend graphs working.