[Rd] libcurl support and curlGetHeaders warning message in R CMD check

[Uwe Ligges]

On 27.01.2015 22:09, Skye Bender-deMoll wrote:
> Dear R devel,
>
> Is libcurl support required to run R.devel, or is it optional?
>
> I'm compiling R.devel on an older Debian machine  that only has libcurl
> version 7.21.0
>
> The R news file says
>
> "
> Sun, 25 Jan 2015
> CHANGES IN R-devel NEW FEATURES
>
>      Optional use of ‘libcurl’ (version 7.28.0 from Oct 2012 or later)
> for Internet access (including on Windows):
>
> ...
>
> CHANGES IN R-devel UTILITIES
>
>      ‘R CMD check --as-cran’ checks existence and accessibility of URLs
> in the ‘DESCRIPTION’ file and in the help files.
> "
>
> Which seems to suggest libcurl support is optional.   The build process
> seems to correctly detect that I have an old version of libcurl
>
> checking if libcurl version >= 7.28.0... no
>
>  > capabilities('libcurl')
> libcurl
>    FALSE
>
> But when I try to build any packages with R.devel (for pre-release
> testing) I get lots and lots of Notes/errors like:
>
>
> Found the following (possibly) invalid URLs:
>    URL: http://statnet.org/
>      From: DESCRIPTION
>      Status: Error
>      Message: curlGetHeaders is not supported on this platform
>
> Maybe this url check should first verify that libcurl is available?
>
>
> If it is the case that libcurl is required for R CMD check --as-cran,
> I'll try to follow up with R debian for how to get appropriate version.
> (seems like libcurl 7.28 is not yet included in a stable Debian release?)
>
> Thanks for your help,

Is this a recent version of R-devel? Which svn? The check is rather new 
and may have changed the days before you wrote.

Best,
Uwe Ligges



> best,
>   -skye
>
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