[Rd] R CMD check warning about compiler warning flags

Duncan Murdoch murdoch.duncan at gmail.com
Thu Dec 21 00:52:25 CET 2017

On 20/12/2017 5:48 PM, Hadley Wickham wrote:
> On Wed, Dec 20, 2017 at 4:26 PM, Prof Brian Ripley
> <ripley at stats.ox.ac.uk> wrote:
>> On 20/12/2017 17:42, Winston Chang wrote:
>>> On recent builds of R-devel, R CMD check gives a WARNING when some
>>> compiler warning flags are detected, such as -Werror, because they are
>>> non-portable. This appears to have been added in this commit:
>>>     https://github.com/wch/r-source/commit/2e80059
>> That is not the canonical R sources.  And your description seems wrong:
>> there is now an _optional_ check controlled by an environment variable,
>> primarily for CRAN checks.
> Are the canonical R sources made available in such a way that one can
> link to them?

Yes, the sources are available.  To link to revision 73909 of R on the 
trunk branch (which I think is the one referred to above), use


I'm not sure if there's an easy way to see the diff between that and 
73908 (which is what the github link showed).  I also don't know if 
there's a way to show the diff between commit N and N-1 in github if I 
only know N.

Duncan Murdoch

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