make lto-compress.o error & build recovery question

[Chris Johns]

On 06/02/2017 15:54, Karim, Hassan wrote:
> confirmed! It is very slow. The only exception is where we can use make
> -j ... enabling multi threads/CPU's to get in on the action.

I think more than 1 job with make now works on a recent MSYS2. To be 
honest I cannot remember if it is working. For a long time MSYS 
(MinGW32) had problems.

>
> but besides that... I just encountered a bug with the Ubuntu on WSL...
> symlinks to directories don't work as expected. The link apparently gets
> created. One can CD into it. but what's inside of that linked directory
> is ... ghostly. They act like recursive links to the same directory.

Ouch.

> Are symlinks used in the RTEMS set builders?

Yes but indirectly. For example 
https://git.rtems.org/rtems-source-builder/tree/source-builder/config/gcc-common-1.cfg#n76. 
You could add __ln_s to windows.py as 'cp' to see if it works. I seem to 
remember from the distance past that MSYS basically did a copy rather 
than create an unsupported link.

Also the RSB cannot control the contents of a tar file is expands and a 
tar file can contain a symlink. The same goes for a build system 
contained in a package.

Chris