[jira] [Created] (ARROW-12558) [R] Can we link to RE2 with rtools 3.5?

["Jonathan Keane (Jira)" <ji...@apache.org>]

Jonathan Keane created ARROW-12558:
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             Summary: [R] Can we link to RE2 with rtools 3.5?
                 Key: ARROW-12558
                 URL: https://issues.apache.org/jira/browse/ARROW-12558
             Project: Apache Arrow
          Issue Type: Bug
          Components: R
            Reporter: Jonathan Keane


It looks like we conditionally use RE2 (only on RTOOLS 4.0), do we need to do this or can RTOOLS 3.5 compile RE2? https://github.com/apache/arrow/blob/master/r/configure.win#L59

From https://github.com/r-windows/rtools-backports/pull/42#issuecomment-827185255

OK I deployed this, but note that now you need to fix your R package, because you built w/ libre2, but currently in your R package you only link to with -lre2 for rtools40, but not for the backport:

https://github.com/apache/arrow/blob/master/r/configure.win#L59

So you need to change that to link to -lre2 unconditionally.

Before you submit to cran make sure to test on winbuilder, in particular the R-oldrelease flavour, which uses this backport.




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