linking issue - what am I doing wrong?

[Swift Griggs <swiftgriggs%gmail.com@localhost>]

I'm doing some tutorials on Motif. I'm really just getting started. I'm 
doing something ignorant while linking and I'm not sure what it is. What 
happens is that I'm able to get Motif and Xtoolkit linked to my little 
test program, but the program won't run unless LD_LIBRARY_PATH is set. Yet 
other programs linked to Motif run fine without even setting that env 
variable. Here's what it looks like (let me know if you care what's in my 
silly little program, I believe this to be my own problem with linking):

So, my fundamental question is: Why does ldd see that 'plan' is linked to 
Motif versus my silly hello program that can't. Understand that if I set 
LD_LIBRARY_PATH to include /usr/pkg/lib, everything works fine.

sgriggs@m83 ~/code/motif $ gcc -g -Wall -I/usr/pkg/include -I/usr/X11R7/include -lXm -L/usr/pkg/lib -o hello hello.c
sgriggs@m83 ~/code/motif $ unset LD_LIBRARY_PATH
sgriggs@m83 ~/code/motif $ ./hello
Shared object "libXm.so.4" not found
sgriggs@m83 ~/code/motif $ ldd hello
hello:
        -lXm.4 => not found
        -lgcc_s.1 => /usr/lib/libgcc_s.so.1
        -lc.12 => /usr/lib/libc.so.12
        -lXt.7 => not found
sgriggs@m83 ~/code/motif $ ldd /usr/pkg/bin/plan
/usr/pkg/bin/plan:
        -lXm.4 => /usr/pkg/lib/libXm.so.4
        -lXmu.7 => /usr/X11R7/lib/libXmu.so.7
        -lXt.7 => /usr/X11R7/lib/libXt.so.7
        -lX11.7 => /usr/X11R7/lib/libX11.so.7
        -lxcb.2 => /usr/X11R7/lib/libxcb.so.2
        -lXau.7 => /usr/X11R7/lib/libXau.so.7
        -lgcc_s.1 => /usr/lib/libgcc_s.so.1
        -lc.12 => /usr/lib/libc.so.12
        -lXdmcp.7 => /usr/X11R7/lib/libXdmcp.so.7
        -lSM.7 => /usr/X11R7/lib/libSM.so.7
        -lICE.7 => /usr/X11R7/lib/libICE.so.7
        -lXext.7 => /usr/X11R7/lib/libXext.so.7
        -lXrender.2 => /usr/X11R7/lib/libXrender.so.2
        -lXft.3 => /usr/X11R7/lib/libXft.so.3
        -lfontconfig.2 => /usr/X11R7/lib/libfontconfig.so.2
        -lexpat.2 => /usr/lib/libexpat.so.2
        -lfreetype.17 => /usr/X11R7/lib/libfreetype.so.17
        -lz.1 => /usr/lib/libz.so.1
        -lbz2.1 => /usr/lib/libbz2.so.1
        -lXrandr.3 => /usr/X11R7/lib/libXrandr.so.3
        -ljpeg.9 => /usr/pkg/lib/libjpeg.so.9
        -lpng16.16 => /usr/pkg/lib/libpng16.so.16
        -lm.0 => /usr/lib/libm.so.0

Any ideas?

-Swift