[WIP] Enable Mac OSX build

[pearu]

Checklist

• [x] Used a fork of the feedstock to propose changes
• [x] Bumped the build number (if the version is unchanged)
• [x] Re-rendered with the latest conda-smithy (Use the phrase code>@<space/conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• [x] Ensured the license file is being packaged.

[conda-forge-linter]

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

I wanted to let you know that I linted all conda-recipes in your PR (recipe) and found some lint.

Here's what I've got...

For recipe:

• Selectors are suggested to take a <two spaces>#<one space>[<expression>] form. See lines [41, 44, 57, 58]

[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.

[pearu]

@conda-forge-admin, please rerender

[xmnlab]

@pearu on CI for linux it is raising this error:

 /home/conda/feedstock_root/build_artifacts/omniscidb-cpu_1559053349382/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeho/bin/initdb tmp
/home/conda/feedstock_root/build_artifacts/omniscidb-cpu_1559053349382/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placeho/bin/initdb: error while loading shared libraries: libdouble-conversion.so.3: cannot open shared object file: No such file or directory

not sure if it is related .. but double-conversion was updated few days ago

[pearu]

Closing as the PR is superseded by https://github.com/conda-forge/omniscidb-cpu-feedstock/pull/7