Problem for building with integers: /usr/bin/ld: Can't find -lintegers

[XVilka]

ocaml/opam-repository#13488

OCaml 4.07.0 system switch, opam 2.0.3,
after upgrading integers package from 0.2.2 version to 0.3.0 ztd.0.2 fails to build:

W: Cannot find source file matching module 'Zstd_generated' in library zstd.
W: Use InterfacePatterns or ImplementationPatterns to define this file with feature "source_patterns".
W: Cannot find source file matching module 'Zstd_generated' in library zstd.
W: Use InterfacePatterns or ImplementationPatterns to define this file with feature "source_patterns".
W: Cannot find source file matching module 'Zstd_generated' in library zstd.
W: Use InterfacePatterns or ImplementationPatterns to define this file with feature "source_patterns".
ocamlopt.opt unix.cmxa -I /home/akochkov/.opam/default/lib/ocamlbuild /home/akochkov/.opam/default/lib/ocamlbuild/ocamlbuildlib.cmxa myocamlbuild_config.ml myocamlbuild.ml /home/akochkov/.opam/default/lib/ocamlbuild/ocamlbuild.cmx -o myocamlbuild
File "_tags", line 31, characters 27-37:
Warning: the tag "pkg_extlib" is not used in any flag or dependency declaration, so it will have no effect; it may be a typo. Otherwise you can use `mark_tag_used` in your myocamlbuild.ml to disable this warning.
File "_tags", line 34, characters 19-29:
Warning: the tag "pkg_extlib" is not used in any flag or dependency declaration, so it will have no effect; it may be a typo. Otherwise you can use `mark_tag_used` in your myocamlbuild.ml to disable this warning.
/home/akochkov/.opam/default/bin/ocamlfind ocamldep -package ctypes.stubs -modules src/zstd_gen.ml > src/zstd_gen.ml.depends
/home/akochkov/.opam/default/bin/ocamlfind ocamldep -package ctypes.stubs -modules src/zstd_stubs.ml > src/zstd_stubs.ml.depends
/home/akochkov/.opam/default/bin/ocamlfind ocamlc -c -g -annot -bin-annot -package ctypes.stubs -I src -o src/zstd_stubs.cmo src/zstd_stubs.ml
/home/akochkov/.opam/default/bin/ocamlfind ocamlc -c -g -annot -bin-annot -package ctypes.stubs -I src -o src/zstd_gen.cmo src/zstd_gen.ml
/home/akochkov/.opam/default/bin/ocamlfind ocamlopt -c -g -annot -bin-annot -package ctypes.stubs -I src -o src/zstd_stubs.cmx src/zstd_stubs.ml
/home/akochkov/.opam/default/bin/ocamlfind ocamlopt -c -g -annot -bin-annot -package ctypes.stubs -I src -o src/zstd_gen.cmx src/zstd_gen.ml
/home/akochkov/.opam/default/bin/ocamlfind ocamlopt -g -linkpkg -package ctypes.stubs -I src src/zstd_stubs.cmx src/zstd_gen.cmx -o src/zstd_gen.native
+ /home/akochkov/.opam/default/bin/ocamlfind ocamlopt -g -linkpkg -package ctypes.stubs -I src src/zstd_stubs.cmx src/zstd_gen.cmx -o src/zstd_gen.native
/usr/bin/ld: 找不到 -lintegers
collect2: 错误：ld 返回 1
File "caml_startup", line 1:
Error: Error during linking
Command exited with code 2.
E: Failure("Command ''/home/akochkov/.opam/default/bin/ocamlbuild' src/libzstd_stubs.a src/dllzstd_stubs.so src/zstd.cma src/zstd.cmxa src/zstd.a src/zstd.cmxs src/zstd_gen.native -tag debug' terminated with error code 10")

[XVilka]

It disappears once I downgrade integers:

opam pin integers 0.2.2

[mseri]

This is likely related to #21

[yallop]

@XVilka: the various versions of ctypes in opam-repository should all be constrained to require integers < 0.3.0. Is it possible you're using a ctypes pin, or need to run opam update?

[XVilka]

@yallop yes, I pinned ctypes to the git repository.

[yallop]

@XVilka: yallop/ocaml-ctypes#594 should fix the problem.

[fare]

Note that integers 0.3.0 still has this bug. My application can't link with it, but works if I tell opam (now 2.0.5, from 2.0.2) to pin integers to 0.2.2. (NB: using ocaml 4.07.1 on Linux x64)

[yallop]

@fare: are you using integers with ctypes? If so, which version of ctypes are you using?

[fare]

I don't see ctypes installed with opam. I'm just trying to build an application with dune that links to integers. It works with 0.2.2 but not 0.3.0, due to a linker error similar to the one above. I can give a transcript if you believe that's a different error.

[yallop]

A reproducible test case would be helpful, if possible.

[fare]

Aha, indeed I found that the culprit was that my dune file had (link_flags -linkall -cclibs -linteger -I +threads) in its (executable section, which is required to link in 0.2.2, but that is breaking the linkage with integers 0.3.0, which works well without it.