Re: actions too long - any improvement?

From: David Abrahams (dave_at_[hidden])
Date: 2005-08-03 09:38:29

Andrey Melnikov <melnikov_at_[hidden]> writes:

> David Abrahams wrote:
>> Andrey Melnikov <melnikov_at_[hidden]> writes:
>> 
>> 
>>>Can we just call CreateProcess to run actions, and use cmd /c only when 
>>>we need to run .bat/.cmd files?
>> 
>> 
>> Yes, that's what we do when you set JAMSHELL=%.
>> 
>> Unfortunately, almost all toolsets need to execute commands that can
>> only be interpreted by the shell. Just do bjam -n -a and you will
>> see.
>> 
> I mean is it very hard to have a way to run specific commands without a 
> shell?
>
> Most commands which suffer from buffer length limits like cl.exe don't 
> require a shell.

Based on the way they're invoked, they do. There's either redirection
or piping or a .bat file needs to run first.

> For example we could have our own launch.exe helper and pass huge 
> command lines to it using environment or temporary files.

Feel free to code it up. I don't see how it can be made to work
reasonably well.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com