[R-SIG-Win] Changelog for Rtools42

[Tomas Kalibera]

Hi Avi,

there is now also a news file for Rtools42, at 
https://cran.r-project.org/bin/windows/Rtools/rtools42/news.html

As of the current release, 5253, there is also the list of installed MXE 
packages in file named "installed.list" in the Rtools distribution.

Best
Tomas

On 4/28/22 16:29, Tomas Kalibera wrote:
> On 4/14/22 05:08, Avraham Adler wrote:
>> Hi, Tomas.
>>
>> Is there a changelog for Rtools42 anywhere; something that would
>> explain the difference between 5111 and 5168, for example? Copying
>> r-sig-windows for reference.
>
> Hi Avi,
>
> for now one can only find out directly from the subversion, as shown 
> here. In short, there is no fundamental change affecting package authors.
>
> (1)
>
> svn diff -r 5111:5168 
> https://svn.r-project.org/R-dev-web/trunk/WindowsBuilds/winutf8/ucrt3/toolchain_libs
>
> gives you the diff for the toolchain and libraries.
>
> C++ library is built with more precise timers. This is not by default 
> in MXE, but I added that to match Msys2 and the previous behavior, on 
> which package benchr depends, so this fixed the package.
>
> Then, the distribution of the cross toolchain has been improved. There 
> are new sections in the documentation about using the cross-compilers 
> and setting up the build tree from the distributed files so that you 
> don't have to build Rtools from scratch. This is useful for people 
> wanting to contribute to Rtools (and hence MXE).
>
> (2)
>
> svn diff -r 5111:5168 
> https://svn.r-project.org/R-dev-web/trunk/WindowsBuilds/winutf8/ucrt3/rtools
>
> shows nothing, so no changes in rtools build scripts
>
> In addition, Rtools42 also have the Msys2 part, which is current when 
> Rtools is built. But I am not aware of a fundamental change that would 
> impact R package authors.
>
> Best
> Tomas
>
>
>
>
>>
>> Thank you,
>>
>> Avi
>