GraphicsMagickWand-config --version (return code: 0)
1.3.26
GraphicsMagickWand-config --help (return code: 1)
Usage: GraphicsMagickWand-config [--cflags] [--cppflags] [--exec-prefix] [--ldflags] [--libs] [--prefix] [--version]
For example, "example.c" may be compiled to produce "example" as follows:
"gcc -o example example.c `GraphicsMagickWand-config --cppflags --cflags --ldflags --libs`"