Cross Compilation

[rgrinberg]

cc @diml @toots @whitequark

[rgrinberg]

I've resolved the conflicts with master.

@diml I guess there's no immediate to clean up the git history now, since we still need to implement your proposal. We can do that cleanup at the end.

[toots]

@rgrinberg has the command-line syntax changed besides removing --install-prefix ? I'm getting this:

[sexplib-windows: jbuilder-windows build] Command started
+ jbuilder-windows "build" "-p" "sexplib" "-j" "4" "-x" "windows" (CWD=/home/opam/.opam/4.04.0+32bit/build/sexplib-windows.v0.9.2)
- Error: exception Sys_error("Is a directory")
- Backtrace:
- Raised by primitive operation at file "pervasives.ml", line 384, characters 7-32
- Called from file "lexing.ml", line 86, characters 4-49
- Called from file "src/meta_lexer.ml", line 275, characters 25-57
- Called from file "src/meta_lexer.ml" (inlined), line 201, characters 4-34
- Called from file "src/meta.ml", line 75, characters 10-17
- Called from file "src/import.ml", line 469, characters 8-11
- Re-raised at file "src/import.ml", line 471, characters 30-37
- Called from file "src/findlib.ml", line 134, characters 33-64
- Called from file "src/context.ml", line 207, characters 12-63
- Called from file "src/future.ml", line 88, characters 40-45
- Called from file "src/future.ml", line 83, characters 65-70
- Called from file "src/future.ml", line 37, characters 9-12
- Re-raised at file "src/future.ml", line 17, characters 36-47
- Called from file "src/future.ml", line 40, characters 9-23
- Called from file "src/import.ml", line 469, characters 8-11
- Re-raised at file "src/import.ml", line 471, characters 30-37
- Called from file "src/future.ml", line 37, characters 9-12
- Re-raised at file "src/future.ml", line 17, characters 36-47
- Called from file "src/future.ml", line 40, characters 9-23
- Called from file "src/import.ml", line 469, characters 8-11
- Re-raised at file "src/import.ml", line 471, characters 30-37
- Called from file "src/future.ml", line 37, characters 9-12
- Re-raised at file "src/future.ml", line 17, characters 36-47
- Called from file "src/future.ml", line 40, characters 9-23
- Called from file "src/import.ml", line 469, characters 8-11
- Re-raised at file "src/import.ml", line 471, characters 30-37
- Called from file "src/future.ml", line 703, characters 6-29
- Called from file "vendor/cmdliner/src/cmdliner_term.ml", line 27, characters 19-24
- Called from file "vendor/cmdliner/src/cmdliner.ml", line 106, characters 32-39
- Called from file "vendor/cmdliner/src/cmdliner.ml", line 136, characters 18-36
- Called from file "vendor/cmdliner/src/cmdliner.ml", line 251, characters 22-48
- Called from file "bin/main.ml", line 1089, characters 10-51
[ERROR] The compilation of sexplib-windows failed at "jbuilder-windows build -p sexplib -j 4 -x windows".

[ghost]

Ah, my mistake, I pushed a fix

[toots]

Thanks! Got a new problem now..

[sexplib-windows: jbuilder-windows build] Command started
+ jbuilder-windows "build" "-p" "sexplib" "-j" "4" "-x" "windows" (CWD=/home/opam/.opam/4.04.0+32bit/build/sexplib-windows.v0.9.2)
- Multiple rules generated for num/lib/.merlin
[ERROR] The compilation of sexplib-windows failed at "jbuilder-windows build -p sexplib -j 4 -x windows".

#=== ERROR while installing sexplib-windows.v0.9.2 ============================#
# opam-version 1.2.2
# os           linux
# command      jbuilder-windows build -p sexplib -j 4 -x windows
# path         /home/opam/.opam/4.04.0+32bit/build/sexplib-windows.v0.9.2
# compiler     4.04.0+32bit
# exit-code    1
# env-file     /home/opam/.opam/4.04.0+32bit/build/sexplib-windows.v0.9.2/sexplib-windows-22-8c0dd3.env
# stdout-file  /home/opam/.opam/4.04.0+32bit/build/sexplib-windows.v0.9.2/sexplib-windows-22-8c0dd3.out
# stderr-file  /home/opam/.opam/4.04.0+32bit/build/sexplib-windows.v0.9.2/sexplib-windows-22-8c0dd3.err
### stderr ###
# Multiple rules generated for num/lib/.merlin

Not sure what this is about. Let me know if you need steps to reproduce.

[ghost]

I haven't managed to install mingw-w64 on my box, so it's hard to try. I need to add some fake cross-compilation test

[toots]

@diml We have a docker-based test suite that you should be able to tap in for quick testing. I've pushed the branch with the changes here: ocaml-cross/opam-cross-windows#56

[ghost]

Ah! Thanks, but I don't have docker either at work :(

I'll try with tests, it's good to have tests anyway

[ghost]

Ok, I added a test and fixed some problems. The PR should be in a better state now.

[toots]

Yeah it's looking good from here as well. Thanks!

[toots]

Actually, I've got another issue now here when compiling ocaml-migrate-parsetree-windows:

### stderr ###
# Warning 58: no cmx file was found in path for module Config, and its interface was not compiled with -opaque
# [...]
#     ocamlopt src/gen/gen.exe [default.windows]
# Error: exception Invalid_argument("index out of bounds")
# Backtrace:
# Raised by primitive operation at file "src/path.ml", line 192, characters 29-39
# Called from file "src/action.ml", line 543, characters 13-62
# Called from file "src/action.ml", line 550, characters 5-54
# Called from file "src/build_system.ml", line 518, characters 6-82
# Called from file "src/future.ml", line 83, characters 65-70
# Called from file "src/future.ml", line 37, characters 9-12

[ghost]

Superseeded by #380