Windows Support

[EduardoRFS]

We should be able to build the following on Windows:

• The project itself
• https://github.com/anmonteiro/gh-feed-reader

[EduardoRFS]

As the symbolic link that we're currently using on gh-feed-reader doesn't work on Windows, it's still not fully functional, you can build but not link the artifacts with webpack

[XantreDev]

Are this still an issue? I can't find anything about gh-feed-reader in this repo

[jchavarri]

I think it's still an issue, see recent PR #577.

[anmonteiro]

@XantreGodlike if you'd like to help us getting Windows support, I'd love to get your help.

I don't currently have access to a Windows machine, but would be more than happy to review patches.

[XantreDev]

Ok, I will investigate

[XantreDev]

Opam for windows was freezed since 2022, so latest version of Dune accessable with opam is 3.5. I tried to install it from github, but build fails with this configuration, menhir or ounit aren't compiling.
I think for proper windows support opam 2.2 should be released, because for now all variants of use opam on Windows awful

[hhugo]

Fyi, js_of_ocaml's CI works on windows including Ocaml5, latest dune, ..
Feel free to get inspiration from there if that helps

[XantreDev]

I will take a look

[anmonteiro]

@XantreGodlike I hear OPAM 2.2 also has better Windows support, could you confirm? I believe an alpha has been tagged already.

[XantreDev]

Hi. You it should, but they is not provided windows executables, I've tried to build opam from source on Windows, but it was failing

[XantreDev]

I've tried to build opam template project with [email protected], but it failed. Do you have any ideas what can happen wrong?

√ script to run » init

> init
> opam switch create . 5.1.1 -y --deps-only && npm run install-opam-npm


<><> Installing new switch packages <><><><><><><><><><><><><><><><><><><><>  🐫
Switch invariant: ["ocaml-base-compiler" {= "5.1.1"} | "ocaml-system" {= "5.1.1"}]
The following actions will be performed:
=== install 38 packages
  ∗ arch-x86_64               1        [required by ocaml-base-compiler]
  ∗ base-bigarray             base
  ∗ base-domains              base
  ∗ base-nnp                  base
  ∗ base-threads              base     [required by dune]
  ∗ base-unix                 base     [required by dune]
  ∗ cmdliner                  1.2.0    [required by melange]
  ∗ conf-mingw-w64-gcc-x86_64 1        [required by mingw-w64-shims]
  ∗ cppo                      1.6.9    [required by melange]
  ∗ dune                      3.15.2   [required by melange-opam-template]
  ∗ dune-build-info           3.15.2   [required by melange, reason]
  ∗ fix                       20230505 [required by reason]
  ∗ flexdll                   0.43     [required by ocaml-base-compiler]
  ∗ host-arch-x86_64          1
  ∗ host-system-mingw         1
  ∗ melange                   3.0.0-51 [required by melange-opam-template]
  ∗ menhir                    20231231 [required by melange, reason]
  ∗ menhirCST                 20231231 [required by menhir]
  ∗ menhirLib                 20231231 [required by menhir]
  ∗ menhirSdk                 20231231 [required by menhir]
  ∗ merlin-extend             0.6.1    [required by reason]
  ∗ mingw-w64-shims           0.1.0    [required by ocaml-base-compiler]
  ∗ ocaml                     5.1.1    [required by melange-opam-template]
  ∗ ocaml-base-compiler       5.1.1
  ∗ ocaml-compiler-libs       v0.12.4  [required by ppxlib]
  ∗ ocaml-config              3        [required by ocaml]
  ∗ ocaml-mingw64-env         1        [required by system-mingw]
  ∗ ocaml-options-vanilla     1
  ∗ ocamlfind                 1.9.5    [required by reason]
  ∗ pp                        1.2.0    [required by melange]
  ∗ ppx_derivers              1.2.1    [required by reason]
  ∗ ppxlib                    0.32.1   [required by melange, reason]
  ∗ reason                    3.11.0   [required by melange-opam-template]
  ∗ reason-react              0.14.0   [required by melange-opam-template]
  ∗ reason-react-ppx          0.14.0   [required by melange-opam-template]
  ∗ sexplib0                  v0.17.0  [required by ppxlib]
  ∗ stdlib-shims              0.3.0    [required by ppxlib]
  ∗ system-mingw              1        [required by ocaml-base-compiler]

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
∗ installed arch-x86_64.1
∗ installed base-bigarray.base
∗ installed base-threads.base
∗ installed base-unix.base
⬇ retrieved cmdliner.1.2.0  (cached)
⬇ retrieved cppo.1.6.9  (cached)
⬇ retrieved fix.20230505  (cached)
∗ installed host-arch-x86_64.1
∗ installed host-system-mingw.1
⬇ retrieved flexdll.0.43  (cached)
∗ installed flexdll.0.43
∗ installed conf-mingw-w64-gcc-x86_64.1
⬇ retrieved menhir.20231231, menhirCST.20231231, menhirLib.20231231, menhirSdk.20231231  (cached)
⬇ retrieved dune.3.15.2, dune-build-info.3.15.2  (cached)
⬇ retrieved melange.3.0.0-51  (cached)
⬇ retrieved merlin-extend.0.6.1  (cached)
⬇ retrieved mingw-w64-shims.0.1.0  (cached)
∗ installed ocaml-mingw64-env.1
∗ installed ocaml-options-vanilla.1
⬇ retrieved ocaml-compiler-libs.v0.12.4  (cached)
⬇ retrieved ocamlfind.1.9.5  (cached)
⬇ retrieved ocaml-base-compiler.5.1.1  (cached)
⬇ retrieved pp.1.2.0  (cached)
⬇ retrieved ppx_derivers.1.2.1  (cached)
∗ installed mingw-w64-shims.0.1.0
⬇ retrieved ppxlib.0.32.1  (cached)
⬇ retrieved reason.3.11.0  (cached)
⬇ retrieved reason-react.0.14.0, reason-react-ppx.0.14.0  (cached)
∗ installed system-mingw.1
⬇ retrieved sexplib0.v0.17.0  (cached)
⬇ retrieved stdlib-shims.0.3.0  (cached)
∗ installed ocaml-base-compiler.5.1.1
∗ installed ocaml-config.3
∗ installed ocaml.5.1.1
∗ installed base-domains.base
∗ installed base-nnp.base
∗ installed cmdliner.1.2.0
[WARNING] .install file is missing .exe extension for src/findlib/ocamlfind
[WARNING] .install file is missing .exe extension for src/findlib/ocamlfind_opt
[WARNING] Automatically adding .exe to C:\Users\Xantre\Projects\melange-opam-template\_opam\.opam-switch\build\ocamlfind.1.9.5\src\findlib\ocamlfind.exe
[WARNING] Automatically adding .exe to C:\Users\Xantre\Projects\melange-opam-template\_opam\.opam-switch\build\ocamlfind.1.9.5\src\findlib\ocamlfind_opt.exe
[WARNING] C:\Users\Xantre\Projects\melange-opam-template\_opam\bin\safe_camlp4 is a script; the command won't be available
∗ installed ocamlfind.1.9.5
∗ installed dune.3.15.2
∗ installed cppo.1.6.9
∗ installed menhirCST.20231231
∗ installed pp.1.2.0
∗ installed stdlib-shims.0.3.0
∗ installed ppx_derivers.1.2.1
∗ installed menhirSdk.20231231
∗ installed fix.20230505
∗ installed menhirLib.20231231
∗ installed dune-build-info.3.15.2
∗ installed merlin-extend.0.6.1
∗ installed ocaml-compiler-libs.v0.12.4
∗ installed sexplib0.v0.17.0
∗ installed ppxlib.0.32.1
∗ installed menhir.20231231
∗ installed reason.3.11.0
∗ installed reason-react-ppx.0.14.0
[ERROR] The compilation of melange.3.0.0-51 failed at "dune build -p melange -j 15 @install".

#=== ERROR while compiling melange.3.0.0-51 ===================================#
# context     2.2.0~beta2 | win32/x86_64 | ocaml-base-compiler.5.1.1 | git+https://github.com/dra27/opam-repository.git#windows-initial
# path        ~\Projects\melange-opam-template\_opam\.opam-switch\build\melange.3.0.0-51
# command     ~\Projects\melange-opam-template\_opam\bin\dune.exe build -p melange -j 15 @install
# exit-code   1
# env-file    ~\AppData\Local\opam\log\melange-24272-dd4a1d.env
# output-file ~\AppData\Local\opam\log\melange-24272-dd4a1d.out
### output ###
# [...]
# File "jscomp/core/dune", line 101, characters 0-158:
# 101 | (rule
# 102 |  (targets js_record_map.ml)
# 103 |  (deps j.mli)
# 104 |  (action
# 105 |   (with-stdout-to
# 106 |    %{targets}
# 107 |    (run ./gen/gen_traversal.exe --input %{deps} --mode record-map))))
# (cd _build/default/jscomp/core && gen/gen_traversal.exe --input j.mli --mode record-map) > _build/default/jscomp/core/js_record_map.ml
# main: internal error, uncaught exception:
#       Failure("output_value: not a binary channel")
#



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
┌─ The following actions failed
│ λ build melange 3.0.0-51
└─
┌─ The following changes have been performed (the rest was aborted)
│ ∗ install arch-x86_64               1
│ ∗ install base-bigarray             base
│ ∗ install base-domains              base
│ ∗ install base-nnp                  base
│ ∗ install base-threads              base
│ ∗ install base-unix                 base
│ ∗ install cmdliner                  1.2.0
│ ∗ install conf-mingw-w64-gcc-x86_64 1
│ ∗ install cppo                      1.6.9
│ ∗ install dune                      3.15.2
│ ∗ install dune-build-info           3.15.2
│ ∗ install fix                       20230505
│ ∗ install flexdll                   0.43
│ ∗ install host-arch-x86_64          1
│ ∗ install host-system-mingw         1
│ ∗ install menhir                    20231231
│ ∗ install menhirCST                 20231231
│ ∗ install menhirLib                 20231231
│ ∗ install menhirSdk                 20231231
│ ∗ install merlin-extend             0.6.1
│ ∗ install mingw-w64-shims           0.1.0
│ ∗ install ocaml                     5.1.1
│ ∗ install ocaml-base-compiler       5.1.1
│ ∗ install ocaml-compiler-libs       v0.12.4
│ ∗ install ocaml-config              3
│ ∗ install ocaml-mingw64-env         1
│ ∗ install ocaml-options-vanilla     1
│ ∗ install ocamlfind                 1.9.5
│ ∗ install pp                        1.2.0
│ ∗ install ppx_derivers              1.2.1
│ ∗ install ppxlib                    0.32.1
│ ∗ install reason                    3.11.0
│ ∗ install reason-react-ppx          0.14.0
│ ∗ install sexplib0                  v0.17.0
│ ∗ install stdlib-shims              0.3.0
│ ∗ install system-mingw              1
└─
# Run for /f "tokens=*" %i in ('opam env') do @%i to update the current shell environment
Switch initialisation failed: clean up? ('n' will leave the switch partially installed) [y/n] y

[anmonteiro]

you may want to try the main branch after #1113 was merged.

[XantreDev]

I will try to. Thanks

[XantreDev]

I've encouraged this error. Is it opam specific?

[ERROR] The compilation of opam-core.2.2.0~beta2 failed at "./configure --disable-checks --prefix C:\\Users\\Xantre\\Projects\\melange-opam-template\\_opam".
∗ installed time_now.v0.16.0
∗ installed fiber.3.7.0
∗ installed dune-rpc.3.15.2
∗ installed ppx_inline_test.v0.16.1
∗ installed ocaml-lsp-server.1.17.0
∗ installed ppx_expect.v0.16.0
∗ installed melange.dev
∗ installed reason-react.0.14.0

#=== ERROR while compiling opam-core.2.2.0~beta2 ==============================#
# context     2.2.0~beta2 | win32/x86_64 | ocaml-base-compiler.5.1.1 | git+https://github.com/dra27/opam-repository.git#windows-initial
# path        ~\Projects\melange-opam-template\_opam\.opam-switch\build\opam-core.2.2.0~beta2
# command     ~\Projects\melange-opam-template\_opam\.opam-switch\build\opam-core.2.2.0~beta2\./configure --disable-checks --prefix C:\Users\Xantre\Projects\melange-opam-template\_opam
# exit-code   1
# env-file    ~\AppData\Local\opam\log\opam-core-86424-be72dc.env
# output-file ~\AppData\Local\opam\log\opam-core-86424-be72dc.out
### output ###
# [...]
# checking for string.h... yes
# checking for inttypes.h... yes
# checking for stdint.h... yes
# checking for strings.h... yes
# checking for sys/stat.h... yes
# checking for sys/types.h... yes
# checking for unistd.h... yes
# checking for acl/libacl.h... no
# checking for library containing acl_get_perm... no
# checking for x86_64-w64-mingw32-i686-w64-mingw32-gcc... no
# checking for i686-w64-mingw32-gcc... no
# configure: error: i686 C compiler not found - opam-putenv cannot be built



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
┌─ The following actions failed
│ λ build opam-core 2.2.0~beta2
└─
┌─ The following changes have been performed (the rest was aborted)

I have c compiler just no that one, but idk one that it needs

❯ which gcc
╭───┬─────────┬──────────────────────────────────────────────────────┬──────────╮
│ # │ command │                         path                         │   type   │
├───┼─────────┼──────────────────────────────────────────────────────┼──────────┤
│ 0 │ gcc     │ C:\Users\Xantre\scoop\apps\mingw\current\bin\gcc.exe │ external │
╰───┴─────────┴──────────────────────────────────────────────────────┴──────────╯
❯ scoop list mingw
Installed apps matching 'mingw':

Name  Version            Source Updated             Info
----  -------            ------ -------             ----
mingw 13.2.0-rt_v11-rev1 main   2024-05-16 23:26:30
❯ which i686-w64-mingw32-gcc
╭────────────╮
│ empty list │
╰────────────╯
❯ which x86_64-w64-mingw32-i686-w64-mingw32-gcc
╭────────────╮
│ empty list │
╰────────────╯

[anmonteiro]

seems like Opam failed to build for some reason. I'm not sure