apache-arrow 3.0.0

[nealrichardson]

See also r-windows/rtools-packages#184

[jeroen]

High-sierra looks OK but the build on el-capitain (osx 10.11) failed with:

/tmp/apache-arrow-20210116-6233-1jyrhk8/apache-arrow-3.0.0/cpp/src/arrow/dataset/expression.cc
/tmp/apache-arrow-20210116-6233-1jyrhk8/apache-arrow-3.0.0/cpp/src/arrow/dataset/expression.cc:684:30: error: default initialization of an object of const type 'const arrow::Datum' without a user-provided default constructor
          static const Datum ignored_input;
                             ^
                                          {}

and

In file included from /tmp/apache-arrow-20210116-6233-1jyrhk8/apache-arrow-3.0.0/cpp/src/arrow/io/caching.cc:26:
/tmp/apache-arrow-20210116-6233-1jyrhk8/apache-arrow-3.0.0/cpp/src/arrow/util/future.h:102:3: error: default initialization of an object of const type 'const struct ContinueFuture' without a user-provided default constructor
} Continue;
  ^
          {}
1 error generated.

So if we want to keep supporting R 3.6 we need to find a workaround for that.

[nealrichardson]

Ok, we can work out a patch for that.
https://issues.apache.org/jira/browse/ARROW-11277

[jeroen]

@bkietz do you have any suggestion how I can work around this?

[bkietz]

@jeroen apache/arrow#9267

[jeroen]

Thanks let me test that

[jeroen]

Seems to work, awesome.