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https://issues.apache.org/jira/browse/ARROW-4033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16721984#comment-16721984
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Francois Saint-Jacques commented on ARROW-4033:
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I suppose that realpath is used to get the absolute path such that the
subsequent exports are independent of the relative path. It could be replaced
by `readlink -f` which is also part of coreutils (but older).
> [C++] thirdparty/download_dependencies.sh uses tools or options not available
> in older Linuxes
> ----------------------------------------------------------------------------------------------
>
> Key: ARROW-4033
> URL: https://issues.apache.org/jira/browse/ARROW-4033
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++
> Reporter: Wes McKinney
> Priority: Major
> Fix For: 0.12.0
>
>
> I found I had to install the {{realpath}} apt package on Ubuntu 14.04. Also
> {{wget 1.15}} does not have the {{--show-progress}} option
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