./src/discover/determine_as_needed_flags.sh >> asneeded.config
ocamlfind  ocamlc -o discover -package str -strict-sequence -linkpkg src/discover/commands.mli src/discover/commands.ml src/discover/discover.ml -I src/discover
File "src/discover/commands.ml", line 62, characters 20-33:
62 |        let stdout = file_contents stdout_filename in
                         ^^^^^^^^^^^^^
Warning 6 [labels-omitted]: label filename was omitted in the application of this function.
File "src/discover/commands.ml", line 63, characters 20-33:
63 |        let stderr = file_contents stderr_filename in
                         ^^^^^^^^^^^^^
Warning 6 [labels-omitted]: label filename was omitted in the application of this function.
./discover -ocamlc "ocamlfind  ocamlc" > libffi.config || (rm libffi.config && false)
testing for brew: .............................. unavailable
testing for MacPorts: .......................... unavailable
testing for pkg-config: ........................ available
testing for libffi: ............................ available
ocamlfind  ocamlc -o gen_c_primitives -package str -strict-sequence -linkpkg src/configure/extract_from_c.ml src/configure/gen_c_primitives.ml -I src/configure
./gen_c_primitives > src/ctypes/ctypes_primitives.ml 2> gen_c_primitives.log || (rm src/ctypes/ctypes_primitives.ml && cat gen_c_primitives.log || false)
ocamlfind  ocamlc -o gen_libffi_abi -package str -strict-sequence -linkpkg src/configure/extract_from_c.ml src/configure/gen_libffi_abi.ml -I src/configure
./gen_libffi_abi > src/ctypes-foreign/libffi_abi.ml 2> gen_c_primitives.log || (rm src/ctypes-foreign/libffi_abi.ml && cat gen_c_primitives.log || false)
cp src/ctypes-foreign/dl.ml.unix src/ctypes-foreign/dl.ml
cp src/ctypes-foreign/dl_stubs.c.unix src/ctypes-foreign/dl_stubs.c
ocamlfind  ocamlc -package bigarray-compat -package integers   -principal -short-paths -strict-sequence -g -ccopt "-I/usr/lib/ocaml/integers"   -c -o _build/src/ctypes/ctypes_ptr.cmo -I _build/src/ctypes  src/ctypes/ctypes_ptr.ml
ocamlfind  ocamlc -package bigarray-compat -package integers   -principal -short-paths -strict-sequence -g -ccopt "-I/usr/lib/ocaml/integers"   -c -o _build/src/ctypes/ctypes_roots_stubs.cmo -I _build/src/ctypes  src/ctypes/ctypes_roots_stubs.ml
ocamlfind  ocamlopt -bin-annot -c -o _build/src/ctypes/lDouble.cmi -package bigarray-compat -package integers    -principal -short-paths -strict-sequence -g -ccopt "-I/usr/lib/ocaml/integers" -I _build/src/ctypes  src/ctypes/lDouble.mli
ocamlfind  ocamlc -package bigarray-compat -package integers   -principal -short-paths -strict-sequence -g -ccopt "-I/usr/lib/ocaml/integers"   -c -o _build/src/ctypes/lDouble.cmo -I _build/src/ctypes  src/ctypes/lDouble.ml
ocamlfind  ocamlc -package bigarray-compat -package integers   -principal -short-paths -strict-sequence -g -ccopt "-I/usr/lib/ocaml/integers"   -c -o _build/src/ctypes/ctypes_bigarray_stubs.cmo -I _build/src/ctypes  src/ctypes/ctypes_bigarray_stubs.ml
ocamlfind  ocamlopt -bin-annot -c -o _build/src/ctypes/complexL.cmi -package bigarray-compat -package integers    -principal -short-paths -strict-sequence -g -ccopt "-I/usr/lib/ocaml/integers" -I _build/src/ctypes  src/ctypes/complexL.mli
ocamlfind  ocamlc -package bigarray-compat -package integers   -principal -short-paths -strict-sequence -g -ccopt "-I/usr/lib/ocaml/integers"   -c -o _build/src/ctypes/complexL.cmo -I _build/src/ctypes  src/ctypes/complexL.ml
ocamlfind  ocamlopt -bin-annot -c -o _build/src/ctypes/ctypes_primitive_types.cmi -package bigarray-compat -package integers    -principal -short-paths -strict-sequence -g -ccopt "-I/usr/lib/ocaml/integers" -I _build/src/ctypes  src/ctypes/ctypes_primitive_types.mli
File "src/ctypes/ctypes_primitive_types.mli", line 1:
Error: /usr/lib/ocaml/integers/unsigned.cmi
       is not a compiled interface for this version of OCaml.
It seems to be for an older version of OCaml.
make: *** [Makefile.rules:126: _build/src/ctypes/ctypes_primitive_types.cmi] Error 2
==> ERROR: A failure occurred in build().
    Aborting...