Ok, I got hold of two Windows systems... one to build the executable, the other with no Strawberry (such things exist!) to run it. Here's the pp invocation in my .bat file:

pp --verbose ^
   --link=libgd-3__.dll ^
   --link=libbz2-1__.dll ^
   --link=libgraphite2__.dll ^
   --link=libharfbuzz-0__.dll ^
   --link=libfreetype-6__.dll ^
   --link=libiconv-2__.dll ^
   --link=libjpeg-9__.dll ^
   --link=liblzma-5__.dll ^
   --link=libpng16-16__.dll ^
   --link=libtiff-5__.dll ^
   --link=libXpm__.dll ^
   --link=zlib1__.dll ^
   --module=GD ^
   --output=gdpacked.exe ^
   pack_gd.pl
[download]

The program pack_gd.pl is just the synopsis from GD on metacpan. Running pp produces no error, and running the executable prints a PNG image. So when you run it, remember to redirect the output to a .png file.

In my first reply, I mixed up some dashes with underscores and missed a few dependencies. Sorry.