gdb_mbuild -do-not-clean-up option

[Andrew Cagney]

> Andrew Cagney writes:
> 
>> In using gdb_mbuild.sh on a machine with lots of disk space (> 2gb free) 
>> I've found things work even better if none of the build directories are 
>> removed.  Instead relying on gdb/Makefile's dependencies to do a correct 
>> re-build after a change.
> 
> 
> My choice would be to make that the default.  Either let people run 'rm -r'
> themselves if they want, or have a flag:



>   -p  prune the build directories
>   -s  strip the build directories
> 
> If you want to an option to keep the directories: '-n' is already
> meaningful for make-type activities.

Yes, that's why I don't like :-)

>   -a  keep _a_ll the build directories

Definitly better.

>> make | tee logfile
> 
> 
> I have never found a way to get the exit status of the first command.
> 
> In my scripts, I just do:
> 
>   set -e # exit on error
>   set -x # echo all commands
>   make > logfile 2>&1

A work around is:

	(make || rm -f gdb) | tee logfile

Andrew