[jira] [Created] (COUCHDB-2615) Ensure that rebar exists and his version is correct

["Alexander Shorin (JIRA)" <ji...@apache.org>]

Alexander Shorin created COUCHDB-2615:
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             Summary: Ensure that rebar exists and his version is correct
                 Key: COUCHDB-2615
                 URL: https://issues.apache.org/jira/browse/COUCHDB-2615
             Project: CouchDB
          Issue Type: Improvement
      Security Level: public (Regular issues)
          Components: Build System
            Reporter: Alexander Shorin


Currently, we relay on the fact that rebar is installed somehow in the system before user runs ./configure. This causes the following issues:

- rebar may actually not being available
- rebar version may be too old

To avoid these issues and make install process more "relaxed", on ./configure phare we could build rebar before fetch any dependencies. Hopefully, we have [own fork|https://git-wip-us.apache.org/repos/asf?p=couchdb-rebar.git] to not depend on remote upstream.

However, it's not wise to always build our own rebar on ./configure - on the end user system there could be already installed rebar with the right version. For this case, we need to provide a switch flag like --with-system-rebar for ./configure script which check if the system rebar version is correct (iirc, we need 2.3.1+, but need to double check that).




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