Always pass -fdiagnostics-color=always to cc-style compilers to avoid useless recompilations when Dune's stderr is redirected
#10883
Conversation
… useless recompilations Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
nojb
force-pushed
the
fix_c_stubs_recompilation
branch
from
364786a to
ff41296
Compare
|
cc @MisterDA do you remember why there's a guard here? |
|
@nojb Does your PR filter out the color sequences when writing to |
In general Dune knows how to strip ANSI color sequences from the output of commands if Dune's output is itself not a terminal. This works if one redirects the output of Dune, eg but this is independent of this PR, the behaviour is the same on |
|
Why does Dune decide to rebuild the stubs? Is it because the set of flags changed that it invalidates the artifacts? If so, I think Dune should rather ignore this flag. I think this is the wrong fix; the original idea was to pass the As a reminder, the end goal was to implement Standard for ANSI Colors in Terminals (quite informal, inspired by the BSD world). Tools should detect whether to output colors based on a CLI flags, an handful of environment variables, or if the output is a terminal (using |
This is the behaviour Dune has always had, as far as I know, and also used with the OCaml compiler. @emillon: do you confirm? |
Also cc @rgrinberg which will know about this. |
|
Always choosing to use colors and stripping the colors ourselves is the consistent thing to do. |
Thanks for the quick reply! Do you confirm that this is already how Dune works and there isn't anything more to do in this PR to handle colors coming from the C compiler correctly? |
|
I confirm. Some testing would of course be appreciated though. FYI, this might break |
Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
Thanks. I tested locally as well as adapting some existing tests that check that the flag is passed correctly and that the color codes are filtered out when dune's stderr is not a terminal. Planning to merge once CI passes. |
…void useless recompilations when Dune's stderr is redirected (ocaml#10883) Signed-off-by: Nicolás Ojeda Bär <n.oje.bar@gmail.com>
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)
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)
Fixes #10882