Compilation issue with default shells (non-POSIX compatible `./configure` file)

[Davoodeh]

Hello,
I noticed that the file ./sources/configure is not POSIX compitable and uses arrays while it is marked to be run with the default shell of the system via a #! /bin/sh.
This causes compilation issues in some setups in which the default shell is not a modern shell such as zsh or bash (in my case my shell is dash).
This can be avoided by changning it to #!/bin/bash or making the file POSIX compatible.

Unfortunately I couldn't do that by myself since I'm not exactly sure how this configure gets generated or works in the first place xD

./configure: 13537: Syntax error: "(" unexpected
==> ERROR: A failure occurred in build().
    Aborting...

That line is:

PYTHON_COMPAT=( python2.7 python2.6 )

So, yeah... that's all I could find out by my limited knowledge...
Sorry for bad English...

[abzrg]

You can tell it which shell to use: CONFIG_SHELL=/bin/bash sources/configure

In almost all Debian based distros and *BSDs, the sh is symlinked to a more POSIX compliant shell than bash, like dash and *ksh.

[fzerorubigd]

Not sure if the latest changes fixed this one, but I was able to compile it in a fresh Ubuntu using sh as the shell (I used Ubuntu in docker, not an actual installation)

[Davoodeh]

Wow, many years have passed. I will surely check it again with a wider pair of eyes.
There are some other tools that may apply. I will check and make a PR. Thanks for the bump...

[Davoodeh]

Closed in favor of #19