Unable to install metaocaml

[yallop]

Unable to install metaocaml

[abhi18av]

Even after that, I run into the following error

Abhinavs-MacBook-Pro:~ eklavya$ sudo opam switch create 4.07.1+BER
[WARNING] Running as root is not recommended

<><> Gathering sources ><><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
[ocaml-variants.4.07.1+BER] found in cache

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
∗ installed base-bigarray.base
∗ installed base-threads.base
∗ installed base-unix.base
[ERROR] The compilation of ocaml-variants failed at "/Users/eklavya/.opam/opam-init/hooks/sandbox.sh build ./configure -prefix
        /Users/eklavya/.opam/4.07.1+BER -cc cc -aspp cc -c".

#=== ERROR while compiling ocaml-variants.4.07.1+BER ==========================#
# context     2.0.1 | macos/x86_64 |  | https://opam.ocaml.org#41ad4464
# path        ~/.opam/4.07.1+BER/.opam-switch/build/ocaml-variants.4.07.1+BER
# command     ~/.opam/opam-init/hooks/sandbox.sh build ./configure -prefix /Users/eklavya/.opam/4.07.1+BER -cc cc -aspp cc -c
# exit-code   2
# env-file    ~/.opam/log/ocaml-variants-54088-ffb3fd.env
# output-file ~/.opam/log/ocaml-variants-54088-ffb3fd.out
### output ###
# Configuring OCaml version 4.07.1
# Configuring for host x86_64-apple-darwin17.5.0 ...
# Configuring for target x86_64-apple-darwin17.5.0 ...
# Using compiler cc.
# cc: error: couldn't create cache file '/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/xcrun_db-0I43LQsf' (errno=Operation not permitted)
# cc: error: couldn't create cache file '/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/xcrun_db-nEKsLkkR' (errno=Operation not permitted)
# cc: error: couldn't create cache file '/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/xcrun_db-EIDDLBrr' (errno=Operation not permitted)
# Compiler family and version: clang-9-1.
# [ERROR!] Unable to compile the test program.
#  Make sure the C compiler cc is properly installed.



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
┌─ The following actions failed
│ λ build ocaml-variants 4.07.1+BER
└─
┌─ The following changes have been performed (the rest was aborted)
│ ∗ install base-bigarray base
│ ∗ install base-threads  base
│ ∗ install base-unix     base
└─
# Run eval $(opam env) to update the current shell environment
Switch initialisation failed: clean up? ('n' will leave the switch partially installed) [Y/n]

I have already done

sudo xcode-select --reset

Please guide me a bit here :)

[abhi18av]

I have since tried working with the environment variables like

alias gcc='gcc-8'
alias cc='gcc-8'
alias g++='g++-8'
alias c++='c++-8'

But when I try to install metaocaml, it still seems to be using clang

Abhinavs-MacBook-Pro:~ eklavya$ sudo opam switch create 4.07.1+BER
[WARNING] Running as root is not recommended

<><> Gathering sources ><><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
[ocaml-variants.4.07.1+BER] found in cache

<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
∗ installed base-bigarray.base
∗ installed base-threads.base
∗ installed base-unix.base
[ERROR] The compilation of ocaml-variants failed at "/Users/eklavya/.opam/opam-init/hooks/sandbox.sh build ./configure -prefix
        /Users/eklavya/.opam/4.07.1+BER -cc cc -aspp cc -c".

#=== ERROR while compiling ocaml-variants.4.07.1+BER ==========================#
# context     2.0.1 | macos/x86_64 |  | https://opam.ocaml.org#41ad4464
# path        ~/.opam/4.07.1+BER/.opam-switch/build/ocaml-variants.4.07.1+BER
# command     ~/.opam/opam-init/hooks/sandbox.sh build ./configure -prefix /Users/eklavya/.opam/4.07.1+BER -cc cc -aspp cc -c
# exit-code   2
# env-file    ~/.opam/log/ocaml-variants-56546-ffb3fd.env
# output-file ~/.opam/log/ocaml-variants-56546-ffb3fd.out
### output ###
# Configuring OCaml version 4.07.1
# Configuring for host x86_64-apple-darwin17.5.0 ...
# Configuring for target x86_64-apple-darwin17.5.0 ...
# Using compiler cc.
# cc: error: couldn't create cache file '/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/xcrun_db-SLFHwPXO' (errno=Operation not permitted)
# cc: error: couldn't create cache file '/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/xcrun_db-nUGItVQz' (errno=Operation not permitted)
# cc: error: couldn't create cache file '/var/folders/zz/zyxvpxvq6csfxvn_n0000000000000/T/xcrun_db-gD5ZIuIZ' (errno=Operation not permitted)
# Compiler family and version: clang-9-1.
# [ERROR!] Unable to compile the test program.
#  Make sure the C compiler cc is properly installed.



<><> Error report <><><><><><><><><><><><><><><><><><><><><><><><><><><><><>  🐫
┌─ The following actions failed
│ λ build ocaml-variants 4.07.1+BER
└─
┌─ The following changes have been performed (the rest was aborted)
│ ∗ install base-bigarray base
│ ∗ install base-threads  base
│ ∗ install base-unix     base
└─
# Run eval $(opam env) to update the current shell environment
Switch initialisation failed: clean up? ('n' will leave the switch partially installed) [Y/n] n
Abhinavs-MacBook-Pro:~ eklavya$ cc
gcc-8: fatal error: no input files
compilation terminated.

[yallop]

I don't think running opam under sudo will do what you need. In addition to the security issues, it'll install things in the wrong place (e.g. under the home directory of the root account) and with the wrong owner.

Once you've worked out how to get opam working on your system (which I can't help with, I'm afraid) I'd expect MetaOCaml installation to go much more smoothly.

[abhi18av]

Hi @yallop , I have realized the issue now.

Initially I had installed opam via homebrew which resulted in opam not being able to update or install anything.

Then eventually, after trying a lot many things, I just did the vanilla shell script based installation as mentioned in the website and then everything started working fine.

I've since been able to install and setup 4.07.1+BER without any issues 👍