Compilation broken on Windows

[murmour]

This is what I get when doing opam install sexplib with the official installer:

#=== ERROR while installing sexplib.113.33.03 =================================#
# opam-version 1.2.2
# os           cygwin
# command      make
# path         /home/mrm/.opam/system/build/sexplib.113.33.03
# compiler     system (4.02.3)
# exit-code    2
# env-file     /home/mrm/.opam/system/build/sexplib.113.33.03/sexplib-2312-d2d111.env
# stdout-file  /home/mrm/.opam/system/build/sexplib.113.33.03/sexplib-2312-d2d111.out
# stderr-file  /home/mrm/.opam/system/build/sexplib.113.33.03/sexplib-2312-d2d111.err
### stdout ###
# [...]
# Create documentations: ............................... true
# Compile tests executable and library and run them: ... false
# pkg_bigarray: ........................................ C:/OCaml/lib
# pkg_num: ............................................. C:/wodi32/home/mrm/.opam/system/lib/num
# pkg_unix: ............................................ C:/OCaml/lib
#
# ./setup.exe -build
# mkdir 'C:\wodi32\home\mrm\.opam\system\build\sexplib.113.33.03\_build'
# Plugin tag "", line 1, characters 0-1:
# Lexing error: Not a valid parametrized tag.
### stderr ###
# W: Cannot find source file matching module 'sexplib_unix' in library sexplib_unix
# W: Cannot find source file matching module 'sexplib_num' in library sexplib_num
# W: Cannot find source file matching module 'sexplib' in library sexplib
# E: Failure("Command 'C:\\OCaml\\bin\\ocamlbuild.EXE -classic-display -no-log -no-links -install-lib-dir C:\\OCaml\\lib\\ocamlbuild -byte-plugin src/sexplib.cma src/sexplib.cmxa src/sexplib.a src/sexplib.cmxs num/lib/sexplib_num.cma num/lib/sexplib_num.cmxa num/lib/sexplib_num.a num/lib/sexplib_num.cmxs unix/lib/sexplib_unix.cma unix/lib/sexplib_unix.cmxa unix/lib/sexplib_unix.a unix/lib/sexplib_unix.cmxs -use-ocamlfind -plugin-tags 'package(js-build-tools.ocamlbuild_goodies)' -tag debug' terminated with error code 8")
# make: *** [Makefile:15: build] Error 1

I had to pin sexplib.113.00.00, which has no build issues.

[ghost]

What opam-repository are you using?

[murmour]

Good question:

$ opam repository
   0 [http]     default     https://opam.ocaml.org

Surprise! Shouldn't it be https://github.com/fdopen/opam-repository-mingw? It could be that I accidentally messed up some of the OPAM settings.

[murmour]

Hm. Isn't that a repository for OCaml 4.03? The official installer doesn't seem to be using it yet.

[murmour]

That wodi32 in the log above is misleading -- I have named the Cygwin folder that way for historical/compatibility purposes.

[ghost]

I don't know much about the status of opam on Windows, but I'm pretty sure that https://opam.ocaml.org is not suitable for Windows atm. The error in the log seems to indicate that it's not the right version of ocamlbuild

[murmour]

Most packages from the official repository work just fine -- I use dozens of them. But alright -- it's high time updating to 4.03 (although I'm one of those boring people who hate spending effort on software updates). I'll try that unofficial mingw repository and post the results here.

[murmour]

The error in the log seems to indicate that it's not the right version of ocamlbuild

Shouldn't then the OPAM package contain a dependency on a particular version of either OCamlbuild or OCaml?

[ghost]

It does AFAIK

[hhugo]

This is likely solved by the switch to jbuilder.

[hhugo]

reopen if needed.