ctypes upgrade from 0.9.0 to 0.9.1 broke some stuff on osx

[dbuenzli]

ocephes no longer compiles. Not sure exactly who's at fault.

- ocamlbuild -use-ocamlfind -package "ctypes,ctypes.foreign,ctypes.stubs" -I src/lib src/lib/libcephes_stubs.a
- ocamlfind ocamlopt unix.cmxa -I /Users/dbuenzli/.opam/4.03.0/lib/ocamlbuild /Users/dbuenzli/.opam/4.03.0/lib/ocamlbuild/ocamlbuildlib.cmxa -linkpkg myocamlbuild.ml /Users/dbuenzli/.opam/4.03.0/lib/ocamlbuild/ocamlbuild.cmx -o myocamlbuild
- ocamlfind ocamldep -package ctypes,ctypes.foreign,ctypes.stubs -modules src/lib_gen/cephes_bindgen.ml > src/lib_gen/cephes_bindgen.ml.depends
- ocamlfind ocamldep -package ctypes,ctypes.foreign,ctypes.stubs -modules src/lib_gen/cephes_bindings.ml > src/lib_gen/cephes_bindings.ml.depends
- ocamlfind ocamlc -c -g -annot -bin-annot -package ctypes,ctypes.foreign,ctypes.stubs -I src/lib_gen -I src/lib -o src/lib_gen/cephes_bindings.cmo src/lib_gen/cephes_bindings.ml
- ocamlfind ocamlc -c -g -annot -bin-annot -package ctypes,ctypes.foreign,ctypes.stubs -I src/lib_gen -I src/lib -o src/lib_gen/cephes_bindgen.cmo src/lib_gen/cephes_bindgen.ml
- ocamlfind ocamlc -linkpkg -g -package ctypes,ctypes.foreign,ctypes.stubs src/lib_gen/cephes_bindings.cmo src/lib_gen/cephes_bindgen.cmo -o src/lib_gen/cephes_bindgen.byte
- + ocamlfind ocamlc -linkpkg -g -package ctypes,ctypes.foreign,ctypes.stubs src/lib_gen/cephes_bindings.cmo src/lib_gen/cephes_bindgen.cmo -o src/lib_gen/cephes_bindgen.byte
- File "_none_", line 1:
- Error: Error on dynamically loaded library: /Users/dbuenzli/.opam/4.03.0/lib/stublibs/dllctypes-foreign-base_stubs.so: dlopen(/Users/dbuenzli/.opam/4.03.0/lib/stublibs/dllctypes-foreign-base_stubs.so, 138): Symbol not found: _ffi_type_double
-   Referenced from: /Users/dbuenzli/.opam/4.03.0/lib/stublibs/dllctypes-foreign-base_stubs.so
-   Expected in: flat namespace
-  in /Users/dbuenzli/.opam/4.03.0/lib/stublibs/dllctypes-foreign-base_stubs.so
- Command exited with code 2.
- make: *** [libcephes_stubs] Error 10

/cc @yallop @rleonid

[yallop]

Thanks for the report. The problem appears to be due to this commit:

yallop/ocaml-ctypes@8c39be8

[dbuenzli]

It's a bit odd I tested the bytecode examples of tgls and they work.