Debug the ocamldebug and ocamldoc hashbang [DO NOT MERGE]

[peterjc]

See https://caml.inria.fr/mantis/view.php?id=7771 and recipe issue #3

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[peterjc]

CircleCI linux, from the debugging in the build.sh

echo $PREFIX
head -n 1 $PREFIX/bin/ocamldebug
head -n 1 $PREFIX/bin/ocamldoc

we have:

+ echo /feedstock_root/build_artefacts/ocaml_1523613135379/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh
+ head -n 1 /feedstock_root/build_artefacts/ocaml_1523613135379/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldebug
+ head -n 1 /feedstock_root/build_artefacts/ocaml_1523613135379/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldoc

Then the test line in our meta.yml file

head -n 1 `which ocamldebug` && ocamlrun ocamldebug -version

seems to have resulted in:

++ which ocamldebug
+ head -n 1 /feedstock_root/build_artefacts/ocaml_1523613135379/_t_env/bin/ocamldebug
#!/feedstock_root/build_artefacts/ocaml_1523613135379/_t_env/bin/ocamlrun
+ ocamlrun ocamldebug -version
Fatal error: exception Failure("input_value: unknown custom block identifier")

This looks like the hashbang was updated to reflect the ultimate installation path, wherever $PREFIX/bin/ocamlrun will be on the end user's machine since here it went from /feedstock_root/build_artefacts/ocaml_1523613135379/_b_env_placehold_.../bin/ocamlrun to /feedstock_root/build_artefacts/ocaml_1523613135379/_t_env/bin/ocamlrun

However, ocamlrun ocamldebug -version still failed.

On the mac under TravisCI, the build logging:

+ echo /Users/travis/miniconda3/conda-bld/ocaml_1523613232581/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla
/Users/travis/miniconda3/conda-bld/ocaml_1523613232581/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla
+ head -n 1 /Users/travis/miniconda3/conda-bld/ocaml_1523613232581/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldebug
#!/Users/travis/miniconda3/conda-bld/ocaml_1523613232581/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamlrun
+ head -n 1 /Users/travis/miniconda3/conda-bld/ocaml_1523613232581/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldoc
#!/Users/travis/miniconda3/conda-bld/ocaml_1523613232581/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamlrun

and the test again still fails,

++ which ocamldebug
+ head -n 1 /Users/travis/miniconda3/conda-bld/ocaml_1523613232581/_t_env/bin/ocamldebug
#!/Users/travis/miniconda3/conda-bld/ocaml_1523613232581/_t_env/bin/ocamlrun
+ ocamlrun ocamldebug -version
/Users/travis/miniconda3/conda-bld/ocaml_1523613232581/test_tmp/run_test.sh: line 19: 33833 Segmentation fault: 11  ocamlrun ocamldebug -version

[peterjc]

Confirming the hashbangs look fine with an actual installation of the ocaml v5.06.0 package under Conda on Linux:

/mnt/shared/scratch/xxx/apps/conda/bin/ocamlrun
$ which ocamldebug
/mnt/shared/scratch/xxx/apps/conda/bin/ocamldebug
$ which ocamldoc
/mnt/shared/scratch/xxx/apps/conda/bin/ocamldoc
$ head -n 1 `which ocamldebug`
#!/mnt/shared/scratch/xx/apps/conda/bin/ocamlrun
$ head -n 1 `which ocamldoc`
#!/mnt/shared/scratch/xxx/apps/conda/bin/ocamlrun

On this Linux system those tools seg-fault:

$ ocamlrun -version
The OCaml runtime, version 4.06.0
$ ocamldoc -version
Segmentation fault (core dumped)
$ ocamldebug -version
Segmentation fault (core dumped)

They also fail this way:

$ ocamlrun `which ocamldebug` -version
Segmentation fault (core dumped)
$ ocamlrun `which ocamldoc` -version
Segmentation fault (core dumped)

[peterjc]

In reply to https://caml.inria.fr/mantis/view.php?id=7771#c19023

On our Linux cluster where I installed the conda package (first release, v4.06.0), this does work:

$ ocamldoc.opt -version
4.06.0

https://circleci.com/gh/conda-forge/ocaml-feedstock/25?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link
On Linux / CircleCI it also worked:

+ ocamldoc.opt -version
4.06.1

https://travis-ci.org/conda-forge/ocaml-feedstock/builds/366092915?utm_source=github_status&utm_medium=notification
Likewise macOS / TravisCI worked:

+ ocamldoc.opt -version
4.06.1

[peterjc]

Loging a little garbled, running head on ocamldoc.opt likely to blame.

+ echo /feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh
+ head -n 1 /feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldebug
#!/feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamlrun
+ head -n 1 /feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldoc
#!/feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamlrun
+ head -n 1 /feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldoc.opt
�ELF��������������>�������P�����@�������xށ���������@�8���@�&�#���������@�������@�@�����@�@�����������������������������������������������@�������@�����������������������������������������������@�������@�����D�G�����D�G������� �������������H�G�����H�������H�������@(,�������-������� ���������������G���������������������������������������������������������������@�������@�����D�������D���������������P�td�����g>������g~������g~���������������������������Q�td����������������������������������������������������/lib64/ld-linux-x86-64.so.2�������������GNU�����������������������������GNU�> `	ܽ��4�k���~͟���@��������������t�������T����*8�PU�(����0U���������������@�`���H�������2��������������(����$����ehB�������������! a������� � ��� &�����)���A��!����6ԗ�B����T�4
+ file /feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldebug
/feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldebug: a /feedstock_root/build_artefacts script text executable
+ file /feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldoc
/feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldoc: a /feedstock_root/build_artefacts script text executable
+ file /feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldoc.opt
/feedstock_root/build_artefacts/ocaml_1523626965065/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeh/bin/ocamldoc.opt: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped

[peterjc]

From the macOS / TravisCI run:

+ head -n 1 /Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldebug
#!/Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamlrun
+ head -n 1 /Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldoc
#!/Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamlrun
+ file /Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldebug
/Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldebug: a /Users/travis/miniconda3/conda- script text executable
+ file /Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldoc
/Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldoc: a /Users/travis/miniconda3/conda- script text executable
+ file /Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldoc.opt
/Users/travis/miniconda3/conda-bld/ocaml_1523628098588/_b_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_pla/bin/ocamldoc.opt: Mach-O 64-bit executable x86_64

Here file says script text executable or Mach-O 64-bit executable x86_64 which seems fine.

From the Linux / CircleCI run:

+ ocamldoc.opt -version
4.06.1
++ which ocamldebug
+ file /feedstock_root/build_artefacts/ocaml_1523628008923/_t_env/bin/ocamldebug
/feedstock_root/build_artefacts/ocaml_1523628008923/_t_env/bin/ocamldebug: a /feedstock_root/build_artefacts script text executable
++ which ocamldoc
+ file /feedstock_root/build_artefacts/ocaml_1523628008923/_t_env/bin/ocamldoc
/feedstock_root/build_artefacts/ocaml_1523628008923/_t_env/bin/ocamldoc: a /feedstock_root/build_artefacts script text executable
++ which ocamldoc.opt
+ file /feedstock_root/build_artefacts/ocaml_1523628008923/_t_env/bin/ocamldoc.opt
/feedstock_root/build_artefacts/ocaml_1523628008923/_t_env/bin/ocamldoc.opt: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped
++ which ocamldebug
+ head -n 1 /feedstock_root/build_artefacts/ocaml_1523628008923/_t_env/bin/ocamldebug
#!/feedstock_root/build_artefacts/ocaml_1523628008923/_t_env/bin/ocamlrun
+ ocamlrun ocamldebug -version
Fatal error: exception Failure("input_value: unknown custom block identifier")

Here file says script text executable, or for the .opt file:

ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, not stripped