> What am I doing wrong here???
> 
> itz:~# ocamlc -linkall -custom toplevellib.cma /usr/lib/ocaml/libgraphics.a \
>         topmain.cmo -o ocaml.graphics
> itz:~# ./ocaml.graphics
>         Objective Caml version 3.01
> 
> # #load "/usr/lib/ocaml/graphics.cma";;
> The external function `gr_set_text_size' is not available
> # 
> itz:~# ocamlc -v
> The Objective Caml compiler, version 3.01
> Standard library directory: /usr/lib/ocaml
> itz:~# nm /usr/lib/ocaml/libgraphics.a | grep gr_set_text_size 
> 000000bc T gr_set_text_size

With -custom, only C primitives actually referenced from Caml code get
linked in.  At the very least, you need to link a Caml object file that
just declares "external" all the C primitives you're interested in.

All the best,

- Xavier Leroy
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