Cannot install core_kernel due to path issues

[msaffer]

I followed the install instructions, when I try to install core_kernel, I run into issues [3]. My best guess is that opam is doing the wrong thing because it thinks it's on a windows system[1], even though I'm running inside of cygwin, and because of that it's exporting PATH with semicolon separators instead of colons [2]. I think this causes ppx-jane to not be in the path when opam tries to compile it.

I tried doing opam config set os cygwin which just broke things. Trying to upgrade to 113.33 didn't help either.

This is on a 64-bit system [4]

[1]
$ ocaml
OCaml version 4.02.3
# Sys.os_type
;;
- : string = "Win32"

[2]
$ opam config env
CAML_LD_LIBRARY_PATH="C:\cygwin64\home\msaffer.opam\system\lib\stublibs;C:\OCaml\lib\stublibs"; export CAML_LD_LIBRARY_PATH;
MANPATH="C:\cygwin64\home\msaffer.opam\system\man;/home/msaffer/.opam/system/man:"; export MANPATH;
PATH="C:\cygwin64\home\msaffer.opam\system\bin;C:\cygwin64\usr\local\bin;C:\cygwin64\bin;C:\OCaml\bin;C:\ruby\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Chocolatey\bin;C:\Windows\System32\Windows System Resource Manager\bin;C:\Windows\idmu\common;C:\Program Files (x86)\Windows Kits\8.0\Windows Performance Toolkit"; export PATH;

[3]
$ opam install core_kernel
The following actions will be performed:

• install core_kernel 113.24.00

=-=- Gathering sources =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

=-=- Processing actions -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[core_kernel: ./configure C:\cygwin64\home\msaffer.opam\system] Command started
[core_kernel: make] Command started
[ERROR] The compilation of core_kernel failed at "make".

#=== ERROR while compiling core_kernel.113.24.00 ==============================#

opam-version 1.3.0~dev2 (d4f7e01216dbb44af4e7cc6539a1b0afa9be9d2c)

os win32

command bash -c make

path C:\cygwin64\home\msaffer.opam\system\build\core_kernel.113.24.00

exit-code 2

env-file C:\cygwin64\home\msaffer.opam\system\build\core_kernel.113.24.00\core_kernel-22524-ad8886.env

stdout-file C:\cygwin64\home\msaffer.opam\system\build\core_kernel.113.24.00\core_kernel-22524-ad8886.out

stderr-file C:\cygwin64\home\msaffer.opam\system\build\core_kernel.113.24.00\core_kernel-22524-ad8886.err

stdout

[...]

''mv hash_stubs.o src/hash_stubs.o

''C:/cygwin64/home/msaffer/.opam/system/bin/ocamlfind.EXE ocamlc -g -I include -c src/heap_block_stubs.c

''mv heap_block_stubs.o src/heap_block_stubs.o

''C:/cygwin64/home/msaffer/.opam/system/bin/ocamlfind.EXE ocamlc -g -I include -c src/int_math_stubs.c

''mv int_math_stubs.o src/int_math_stubs.o

''C:/cygwin64/home/msaffer/.opam/system/bin/ocamlfind.EXE ocamlc -g -I include -c src/time_ns_stubs.c

''mv time_ns_stubs.o src/time_ns_stubs.o

''C:/cygwin64/home/msaffer/.opam/system/bin/ocamlfind.EXE ocamlmklib -o src/core_kernel_stubs src/bigstring_marshal_stubs.o src/bigstring_stubs.o src/core_array_stubs.o src/core_gc_stubs.o src/exn_stubs.o src/hash_stubs.o src/heap_block_stubs.o src/int_math_stubs.o src/time_ns_stubs.o

''C:/cygwin64/home/msaffer/.opam/system/bin/ocamlfind.EXE ocamldep -package variantslib -package typerep -package sexplib -package ppx_inline_test.runtime-lib -package ppx_expect.collector -package ppx_bench.runtime-lib -package ppx_assert.runtime-lib -package num -package fieldslib -package bin_prot -pp 'ppx-jane -dump-ast -inline-test-lib core_kernel' -predicates ppx_driver -modules src/app[...]

Exit code 2 while executing this command:

''C:/cygwin64/home/msaffer/.opam/system/bin/ocamlfind.EXE ocamldep -package variantslib -package typerep -package sexplib -package ppx_inline_test.runtime-lib -package ppx_expect.collector -package ppx_bench.runtime-lib -package ppx_assert.runtime-lib -package num -package fieldslib -package bin_prot -pp 'ppx-jane -dump-ast -inline-test-lib core_kernel' -predicates ppx_driver -modules src/a[...]

Makefile:15: recipe for target 'build' failed

stderr

W: Cannot find source file matching module 'core_kernel' in library core_kernel

'ppx-jane' is not recognized as an internal or external command,

operable program or batch file.

File "src/applicative.mli", line 1:

Error: Error while running external preprocessor

Command line: ppx-jane -dump-ast -inline-test-lib core_kernel "src/applicative.mli" > C:\cygwin64\tmp\ocamlpp2efe4f

E: Failure("Command ''C:/OCaml/bin/ocamlbuild.EXE' -classic-display -no-log -no-links -install-lib-dir 'C:/OCaml/lib/ocamlbuild' -byte-plugin src/libcore_kernel_stubs.a src/dllcore_kernel_stubs.dll src/core_kernel.cma src/core_kernel.cmxa src/core_kernel.a src/core_kernel.cmxs -use-ocamlfind -plugin-tags 'package(ppx_driver.ocamlbuild)' -tag debug' terminated with error code 2")

make: *** [build] Error 1

=-=- Error report -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
The following actions failed

• build core_kernel 113.24.00
  No changes have been performed

[4]
$ opam config report

OPAM config report

opam-version 1.3.0~dev2 (d4f7e01216dbb44af4e7cc6539a1b0afa9be9d2c)

self-upgrade no

os win32

external-solver no

jobs 1

repositories 0 (http), 1 (version-controlled)

pinned 0

current-switch system*

last-update 2016-03-10 20:13

$ opam config list

Global OPAM configuration variables

user user
group group
make make
root C:\cygwin64\home\msaffer.opam
prefix C:\cygwin64\home\msaffer.opam\system
lib C:\cygwin64\home\msaffer.opam\system\lib
bin C:\cygwin64\home\msaffer.opam\system\bin
sbin C:\cygwin64\home\msaffer.opam\system\sbin
doc C:\cygwin64\home\msaffer.opam\system\doc
stublibs C:\cygwin64\home\msaffer.opam\system\lib\stublibs
toplevel C:\cygwin64\home\msaffer.opam\system\lib\toplevel
man C:\cygwin64\home\msaffer.opam\system\man
share C:\cygwin64\home\msaffer.opam\system\share
etc C:\cygwin64\home\msaffer.opam\system\etc

Global variables from the environment

ocaml-version 4.02.3 # The version of the currently used OCaml compiler
opam-version 1.3.0~dev2 # The currently running OPAM version
compiler system # The name of the current OCaml compiler (may be more specific than the version, eg: "4.01.0+fp", or "system")
preinstalled true # Whether the compiler was preinstalled on the system, or installed by OPAM
switch system # The local name (alias) of the current switch
jobs 1 # The number of parallel jobs set up in OPAM configuration
ocaml-native true # Whether the OCaml native compilers are available
ocaml-native-tools true # Whether the native ".opt" version of the OCaml toolchain is available
ocaml-native-dynlink true # Whether native dynlink is available on this installation
arch x86_64 # The current arch, as returned by "uname -m"

Package variables ('opam config list PKG' to show)

PKG:name # Name of the package
PKG:version # Version of the package
PKG:depends # Resolved direct dependencies of the package
PKG:installed # Whether the package is installed
PKG:enable # Takes the value "enable" or "disable" depending on whether the package is installed
PKG:pinned # Whether the package is pinned
PKG:bin # Binary directory for this package
PKG:sbin # System binary directory for this package
PKG:lib # Library directory for this package
PKG:man # Man directory for this package
PKG:doc # Doc directory for this package
PKG:share # Share directory for this package
PKG:etc # Etc directory for this package
PKG:build # Directory where the package was built
PKG:hash # Hash of the package archive

[protz]

I think this is one more instance of @dra27's opam fork not calling bash with proper quoting. It's very primitive right now... and the install: directives are sometimes not run properly.

[protz]

Oh but you shouldn't use opam's config -env feature. Have you followed the instructions at http://protz.github.io/ocaml-installer/ for setting a proper PATH?

[msaffer]

Yep, I put the following in my ~/.bashrc at first:
export CAML_LD_LIBRARY_PATH=$HOME/.opam/system/lib/stublibs:/cygdrive/c/OCaml/lib/stublibs
export MANPATH=$HOME/.opam/system/man:$MANPATH
export PATH=$HOME/.opam/system/bin:$PATH

Do you know any way around this? Maybe I should fork that repo and try and fix it? I got the feeling from @dra27's patches that someone was able to get core working on windows with that opam repo.

[protz]

The repository at https://github.com/fdopen/opam-repository-mingw is supposed to go along with the custom-made OPAM binary from @fdopen that's listed on the wiki page; however:

• I cannot reasonably repackage someone's binary and brand it as the official ocaml installer;
• the patches have not been released, as far as I understand.

It's probably not very hard to fix shell invocations -- I remember dealing with that a while ago as I hunted down some bug in ocamlbuild. I do have, however, more urgent things to deal with :(.