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Error building library with indirect dependency on object file #10785

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Hsodergren opened this issue Jul 30, 2024 · 2 comments · Fixed by #10783 or ocaml/opam-repository#26975
Closed

Error building library with indirect dependency on object file #10785

Hsodergren opened this issue Jul 30, 2024 · 2 comments · Fixed by #10783 or ocaml/opam-repository#26975

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@Hsodergren
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There seems to be a problem when building libraries with indirect dependencies to object files. That is, when calc.ml depends on dep.c which in turn depends on add.o.

I get the following error:

/usr/bin/ld: lib/add.o: in function `add':
add.c:(.text+0x0): multiple definition of `add'; lib/libc_test_stubs.a(add.o):add.c:(.text+0x0): first defined here
collect2: error: ld returned 1 exit status

The issue is also discussed at discuss.ocaml.org.

Reproduction

Specifications

  • Version of dune: 3.16.0
  • Version of ocaml: 5.2.0

Additional information
@Hsodergren Hsodergren mentioned this issue Jul 30, 2024
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@nojb
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nojb commented Jul 30, 2024

Thanks, I believe #10783 should fix it. Can you give it a try and confirm?

@Hsodergren
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Your changes seems to work! Thanks a lot @nojb.

@nojb nojb mentioned this issue Jul 30, 2024
Merged
maiste added a commit to maiste/opam-repository that referenced this issue Nov 25, 2024
@maiste
[new release] dune (15 packages) (3.17.0~alpha0)
f1d49be 
CHANGES:

### Fixed

- Show the context name for errors happening in non-default contexts.
  (ocaml/dune#10414, fixes ocaml/dune#10378, @jchavarri)

- Correctly declare dependencies of indexes so that they are rebuilt when
  needed. (ocaml/dune#10623, @voodoos)

- Don't depend on coq-stdlib being installed when expanding variables
  of the `coq.version` family (ocaml/dune#10631, fixes ocaml/dune#10629, @gares)

- Error out if no files are found when using `copy_files`. (ocaml/dune#10649, @jchavarri)

- Re_export dune-section private library in the dune-site library stanza,
  in order to avoid failure when generating and building sites modules
  with implicit_transitive_deps = false. (ocaml/dune#10650, fixes ocaml/dune#9661, @MA0100)

- Expect test fixes: support multiple modes and fix dependencies when there is
  a custom runner (ocaml/dune#10671, @vouillon)

- In a `(library)` stanza with `(extra_objects)` and `(foreign_stubs)`, avoid
  double linking the extra object files in the final executable.
  (ocaml/dune#10783, fixes ocaml/dune#10785, @nojb)

- Map `(re_export)` library dependencies to the `exports` field in `META` files,
  and vice-versa. This field was proposed in to
  https://discuss.ocaml.org/t/proposal-a-new-exports-field-in-findlib-meta-files/13947.
  The field is included in Dune-generated `META` files only when the Dune lang
  version is >= 3.17.
  (ocaml/dune#10831, fixes ocaml/dune#10830, @nojb)

- Fix staged pps preprocessors on Windows (which were not working at all
  previously) (ocaml/dune#10869, fixes ocaml/dune#10867, @nojb)

- Fix `dune describe` when an executable is disabled with `enabled_if`.
  (ocaml/dune#10881, fixes ocaml/dune#10779, @moyodiallo)

- Fix an issue where C stubs would be rebuilt whenever the stderr of Dune was
  redirected. (ocaml/dune#10883, fixes ocaml/dune#10882, @nojb)

- Format long lists in s-expressions to fill the line instead of formatting
  them in a vertical way (ocaml/dune#10892, fixes ocaml/dune#10860, @nojb)

- Fix the URL opened by the command `dune ocaml doc`. (ocaml/dune#10897, @gridbugs)

- Fix the file referred to in the error/warning message displayed due to the
  dune configuration version not supporting a particular configuration
  stanza in use. (ocaml/dune#10923, @H-ANSEN)

- Fix `enabled_if` when it uses `env` variable. (ocaml/dune#10936, fixes ocaml/dune#10905, @moyodiallo)

- Fix exec -w for relative paths with --root argument (ocaml/dune#10982, @gridbugs)

- Do not ignore the `(locks ..)` field in the `test` and `tests` stanza
  (ocaml/dune#11081, @rgrinberg)

- Tolerate files without extension when generating merlin rules.
  (ocaml/dune#11128, @anmonteiro)

### Added

- Make Merlin/OCaml-LSP aware of "hidden" dependencies used by
  `(implicit_transitive_deps false)` via the `-H` compiler flag. (ocaml/dune#10535, @voodoos)

- Add support for the -H flag (introduced in OCaml compiler 5.2) in dune
  (requires lang versions 3.17). This adaptation gives
  the correct semantics for `(implicit_transitive_deps false)`.
  (ocaml/dune#10644, fixes ocaml/dune#9333, ocsigen/tyxml#274, ocaml/dune#2733, ocaml/dune#4963, @MA0100)

- Add support for specifying Gitlab organization repositories in `source`
  stanzas (ocaml/dune#10766, fixes ocaml/dune#6723, @H-ANSEN)

- New option to control jsoo sourcemap generation in env and executable stanza
  (ocaml/dune#10777, fixes ocaml/dune#10673, @hhugo)

- One can now control jsoo compilation_mode inside an executable stanza
  (ocaml/dune#10777, fixes ocaml/dune#10673, @hhugo)

- Add support for specifying default values of the `authors`, `maintainers`, and
  `license` stanzas of the `dune-project` file via the dune config file. Default
  values are set using the `(project_defaults)` stanza (ocaml/dune#10835, @H-ANSEN)

- Add names to source tree events in performance traces (ocaml/dune#10884, @jchavarri)

- Add `codeberg` as an option for defining project sources in dune-project
  files. For example, `(source (codeberg user/repo))`. (ocaml/dune#10904, @nlordell)

- `dune runtest` can now run individual tests with `dune runtest mytest.t`
  (ocaml/dune#11041, @Alizter).

- Wasm_of_ocaml support (ocaml/dune#11093, @vouillon)

- Add a `coqdep_flags` field to the `coq` field of the `env` stanza, and to the `coq.theory` stanza, allowing to configure `coqdep` flags.
  (ocaml/dune#11094, @rlepigre)

### Changed

- Remove all remnants of the experimental `patch-back-source-tree`. (ocaml/dune#10771,
  @rgrinberg)

- Change the preset value for author and maintainer fields in the
  `dune-project` file to encourage including emails. (ocaml/dune#10848, @punchagan)

- Tweak the preset value for tags in the `dune-project` file to hint at topics
  not having a special meaning. (ocaml/dune#10849, @punchagan)

- Change some colors to improve readability in light-mode terminals
  (ocaml/dune#10890, @gridbugs)

- Forward the linkall flag to jsoo in whole program compilation as well (ocaml/dune#10935, @hhugo)

- Configurator uses `pkgconf` as pkg-config implementation when available
  and forwards it the `target` of `ocamlc -config`. (ocaml/dune#10937, @pirbo)

- Enable Dune cache by default. Add a new Dune cache setting
  `enabled-except-user-rules`, which enables the Dune cache, but excludes
  user-written rules from it. This is a conservative choice that can avoid
  breaking rules whose dependencies are not correctly specified. This is the
  current default. (ocaml/dune#10944, ocaml/dune#10710, @nojb, @ElectreAAS)

- Do not add `dune` dependency in `dune-project` when creating projects with
  `dune init proj`. The Dune dependency is implicitely added when generating
  opam files (ocaml/dune#11129, @Leonidas-from-XIV)
@maiste maiste mentioned this issue Nov 25, 2024
Closed
maiste added a commit to maiste/opam-repository that referenced this issue Nov 27, 2024
@maiste
[new release] dune (15 packages) (3.17.0)
ca0426d 
CHANGES:

### Fixed

- Show the context name for errors happening in non-default contexts.
  (ocaml/dune#10414, fixes ocaml/dune#10378, @jchavarri)

- Correctly declare dependencies of indexes so that they are rebuilt when
  needed. (ocaml/dune#10623, @voodoos)

- Don't depend on coq-stdlib being installed when expanding variables
  of the `coq.version` family (ocaml/dune#10631, fixes ocaml/dune#10629, @gares)

- Error out if no files are found when using `copy_files`. (ocaml/dune#10649, @jchavarri)

- Re_export dune-section private library in the dune-site library stanza,
  in order to avoid failure when generating and building sites modules
  with implicit_transitive_deps = false. (ocaml/dune#10650, fixes ocaml/dune#9661, @MA0100)

- Expect test fixes: support multiple modes and fix dependencies when there is
  a custom runner (ocaml/dune#10671, @vouillon)

- In a `(library)` stanza with `(extra_objects)` and `(foreign_stubs)`, avoid
  double linking the extra object files in the final executable.
  (ocaml/dune#10783, fixes ocaml/dune#10785, @nojb)

- Map `(re_export)` library dependencies to the `exports` field in `META` files,
  and vice-versa. This field was proposed in to
  https://discuss.ocaml.org/t/proposal-a-new-exports-field-in-findlib-meta-files/13947.
  The field is included in Dune-generated `META` files only when the Dune lang
  version is >= 3.17.
  (ocaml/dune#10831, fixes ocaml/dune#10830, @nojb)

- Fix staged pps preprocessors on Windows (which were not working at all
  previously) (ocaml/dune#10869, fixes ocaml/dune#10867, @nojb)

- Fix `dune describe` when an executable is disabled with `enabled_if`.
  (ocaml/dune#10881, fixes ocaml/dune#10779, @moyodiallo)

- Fix an issue where C stubs would be rebuilt whenever the stderr of Dune was
  redirected. (ocaml/dune#10883, fixes ocaml/dune#10882, @nojb)

- Fix the URL opened by the command `dune ocaml doc`. (ocaml/dune#10897, @gridbugs)

- Fix the file referred to in the error/warning message displayed due to the
  dune configuration version not supporting a particular configuration
  stanza in use. (ocaml/dune#10923, @H-ANSEN)

- Fix `enabled_if` when it uses `env` variable. (ocaml/dune#10936, fixes ocaml/dune#10905, @moyodiallo)

- Fix exec -w for relative paths with --root argument (ocaml/dune#10982, @gridbugs)

- Do not ignore the `(locks ..)` field in the `test` and `tests` stanza
  (ocaml/dune#11081, @rgrinberg)

- Tolerate files without extension when generating merlin rules.
  (ocaml/dune#11128, @anmonteiro)

### Added

- Make Merlin/OCaml-LSP aware of "hidden" dependencies used by
  `(implicit_transitive_deps false)` via the `-H` compiler flag. (ocaml/dune#10535, @voodoos)

- Add support for the -H flag (introduced in OCaml compiler 5.2) in dune
  (requires lang versions 3.17). This adaptation gives
  the correct semantics for `(implicit_transitive_deps false)`.
  (ocaml/dune#10644, fixes ocaml/dune#9333, ocsigen/tyxml#274, ocaml/dune#2733, ocaml/dune#4963, @MA0100)

- Add support for specifying Gitlab organization repositories in `source`
  stanzas (ocaml/dune#10766, fixes ocaml/dune#6723, @H-ANSEN)

- New option to control jsoo sourcemap generation in env and executable stanza
  (ocaml/dune#10777, fixes ocaml/dune#10673, @hhugo)

- One can now control jsoo compilation_mode inside an executable stanza
  (ocaml/dune#10777, fixes ocaml/dune#10673, @hhugo)

- Add support for specifying default values of the `authors`, `maintainers`, and
  `license` stanzas of the `dune-project` file via the dune config file. Default
  values are set using the `(project_defaults)` stanza (ocaml/dune#10835, @H-ANSEN)

- Add names to source tree events in performance traces (ocaml/dune#10884, @jchavarri)

- Add `codeberg` as an option for defining project sources in dune-project
  files. For example, `(source (codeberg user/repo))`. (ocaml/dune#10904, @nlordell)

- `dune runtest` can now run individual tests with `dune runtest mytest.t`
  (ocaml/dune#11041, @Alizter).

- Wasm_of_ocaml support (ocaml/dune#11093, @vouillon)

- Add a `coqdep_flags` field to the `coq` field of the `env` stanza, and to the `coq.theory` stanza, allowing to configure `coqdep` flags.
  (ocaml/dune#11094, @rlepigre)

### Changed

- Remove all remnants of the experimental `patch-back-source-tree`. (ocaml/dune#10771,
  @rgrinberg)

- Change the preset value for author and maintainer fields in the
  `dune-project` file to encourage including emails. (ocaml/dune#10848, @punchagan)

- Tweak the preset value for tags in the `dune-project` file to hint at topics
  not having a special meaning. (ocaml/dune#10849, @punchagan)

- Change some colors to improve readability in light-mode terminals
  (ocaml/dune#10890, @gridbugs)

- Forward the linkall flag to jsoo in whole program compilation as well (ocaml/dune#10935, @hhugo)

- Configurator uses `pkgconf` as pkg-config implementation when available
  and forwards it the `target` of `ocamlc -config`. (ocaml/dune#10937, @pirbo)

- Enable Dune cache by default. Add a new Dune cache setting
  `enabled-except-user-rules`, which enables the Dune cache, but excludes
  user-written rules from it. This is a conservative choice that can avoid
  breaking rules whose dependencies are not correctly specified. This is the
  current default. (ocaml/dune#10944, ocaml/dune#10710, @nojb, @ElectreAAS)

- Do not add `dune` dependency in `dune-project` when creating projects with
  `dune init proj`. The Dune dependency is implicitely added when generating
  opam files (ocaml/dune#11129, @Leonidas-from-XIV)
@maiste maiste mentioned this issue Nov 27, 2024
Merged
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