Re: gmake is slow under cygwin

Re: gmake is slow under cygwin

[Earnie Boyd]

--- Gabriel Zachmann <zach@igd.fhg.de> wrote:
> 
> Any ideas or insights will be highly appreciated,
> Gab.
> 

Any virus scanners running?  See the FAQ.

Cheers,

=====
--- < http://earniesystems.safeshopper.com > ---
   Earnie Boyd: < mailto:earnie_boyd@yahoo.com >
            __Cygwin: POSIX on Windows__
Cygwin Newbies: < http://gw32.freeyellow.com/ >
           __Minimalist GNU for Windows__
    Mingw Home: < http://www.mingw.org/ >

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Bash + Shell hack = ?

[Luke Bakken]

Hi,

I've got an option for my "File Folder" file type so that if I right-click
on a folder, I can execute a cmd.exe prompt in that folder:

cmd.exe /K cd "%1"


What I'm wondering is if something analogous to the /K switch exists for
Bash, so that I can run a command before starting the login shell. the
"-c" option is similar, but the shell exits after running the command
specified. What I want is for it not to exit.

Thanks,
Luke


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Re: Bash + Shell hack = ?

[Jonathan M Merz]

[-- Attachment #1: Type: text/plain, Size: 2392 bytes --]

Hi,

I actually was trying to do the same thing a few weeks ago and came up with an ugly hack, but it gets the job done.  The problem is that any time you run a bash --login, it drops you into your home directory, so you actually need to run the cd command _after_ starting the login shell.  The way I managed this is to have a windows batch file call a bash shell script (since I'd rather write shell scripts than batch files) that creates a file containing the cd command to whatever the directory is.  The two files for that are gotodir.bat and gotodir.sh (I've attached them).  Then, I put a check in the bottom of my .bashrc and .profile to see if the file with the cd command exists, and if it does, execute it, then delete it (so that it won't be run if I just want to start a login shell in my home directory.  So, to set it up (I warned you, this is ugly):

1.  put gotodir.sh in your $HOME/bin directory (This can be changed, but you'll have to edit gotodir.bat to do it)
2.  put gotodir.bat anywhere you like, just so you know where it is.
3.  add the following to your .bashrc or .profile:
    test -f ~/.chdirrc && . ~/.chdirrc
    test -f ~/.chdirrc && rm ~/.chdirrc
4.  in the windows registry, add:
    [HKLM]\SOFTWARE\Classes\Folder\shell\Bash Prompt Here   (Make this whatever you want to see in the context menu)
    [HKLM]\SOFTWARE\Classes\Folder\shell\Bash Prompt Here\command

    in the command key, add the string "c:\winnt\system32\cmd.exe /c <path to gotodir.bat>\gotodir.bat"

 Hopefully I have the setup correct there.  If not, let me know what's not working and hopefully I'll be able to correct myself.  And if anyone knows of or can come up with a cleaner way to do this, please let us all know.

 Hope it helps,

 Jon


On Fri, Sep 22, 2000 at 08:48:04AM -0700, Luke Bakken wrote:
> Hi,
> 
> I've got an option for my "File Folder" file type so that if I right-click
> on a folder, I can execute a cmd.exe prompt in that folder:
> 
> cmd.exe /K cd "%1"
> 
> 
> What I'm wondering is if something analogous to the /K switch exists for
> Bash, so that I can run a command before starting the login shell. the
> "-c" option is similar, but the shell exits after running the command
> specified. What I want is for it not to exit.
> 
> Thanks,
> Luke
> 
> 
> --
> Want to unsubscribe from this list?
> Send a message to cygwin-unsubscribe@sourceware.cygnus.com
> 

[-- Attachment #2: gotodir.bat --]
[-- Type: text/plain, Size: 59 bytes --]

REM ECHO OFF
bash %HOME%\bin\gotodir.sh
bash --login -i

[-- Attachment #3: gotodir.sh --]
[-- Type: text/plain, Size: 99 bytes --]

echo cd $PWD >  $HOME/.chdirrc
echo rm .chdirrc >> $HOME/.chdirrc
echo clear >> $HOME/.chdirrc

Re: Bash + Shell hack = ?

[Chris Abbey]

If y'all don't mind I'd like to suggest a slightly cleaner way of doing this.

Starting from the windows explorer end. Windows automatically passes the fully
qualified path to the object as arg 1, so just create an item that points to
cygwin.bat however you wish, mine is called "bash this" and the command to run
is simply "d:\cygwin\cygwin.bat". Windows will automatically call it with the
full path, so if you choose this on c:\yada it would run "d:\cygwin\cygwin.bat
c:\yada".

Now to that we've got it into cygwin.bat we need to propagate it further, using
an environment variable is easiest... here's my cygwin.bat:

@set STARTIN=%1
@d:\cygwin\bin\bash --login -i

the only line there that is important to this is the one setting
the STARTIN envvar, as this is how we pass it on to bash... in order
to act on it I've replaced this line in /etc/profile:

cd $HOME

with this logic:

if [ ! -z "$STARTIN" ]; then
   if [ -d "$STARTIN" ]; then
     cd "$STARTIN"
   else
     echo "$STARTIN is not a valid path."
     cd $HOME
   fi
   unset STARTIN
else
   cd $HOME
fi


which also requires these lines to be changed, as . and ~ may no
longer be the same directory at this point in the script:

test -f ./.profile && . ./.profile
test -f ./.bashrc && . ./.bashrc

becomes:

test -f ~/.profile && . ~/.profile
test -f ~/.bashrc && . ~/.bashrc

This gives you a couple other advantages: such as you can create an icon
to open a bash prompt to any given location (I like one in my start bar
that automatically puts me in the root of my products build tree.) and
you can open a new bash window from any dos prompt with 'start cygwin .'

Note that if you want to be able to handle spaces in paths then you can
replace STARTIN's assignment with this:

set STARTIN=%1 %2 %3 %4 %5 %6 %7 %8 %9

which will allow you to have up to 8 spaces in the total path; the downside
to this is that the initial prompt will look a bit odd (trailing spaces)
until you cd the first time.

p.s. any relation to Kirby?


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Re: gmake is slow under cygwin

[Gabriel Zachmann]

] --- Gabriel Zachmann <zach@igd.fhg.de> wrote:
] > 
] > Any ideas or insights will be highly appreciated,
] > Gab.
] > 
] 
] Any virus scanners running?  See the FAQ.
] 

(Hm, the FAQ didn't say that a virus scanner could incur a performance
penalty, it just said that it might prevent cygwin from functioning ;-)

Ok, I switched McAffee off.
But that reduced execution time only by about 1 sec:
-  with mcaffee running: real time = 7.4 sec, user time = 3.1 sec;
-  mcaffee not running: real = 6 sec, user time = 2.8 sec

That still seems pretty slow for just a few 100 lines of makefiles,
doesn't it?

Cheers,
Gab.


-- 
/---------------------------------------------------------------------\
| Paradigm is a word too often used by those                          |
| who would like to have a new idea                                   |
| but cannot think of one.                                            |
|                     (Mervyn King, Deputy Governor, Bank of England) |
|                                                                     |
| zach@igd.fhg.de          gab@gab.cx        Gabriel.Zachmann@gmx.net |
| www.igd.fhg.de/~zach/    www.gab.cx        __@/'                    |
\---------------------------------------------------------------------/

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Re: Bash + Shell hack = ?

[Luke Bakken]

This is what I had to do with this:

c:\cygwin\bin\bash.exe -c "cd '%1';exec /usr/bin/bash --rcfile
/home/administrator/.bash_shell_profile"


I had to create that separate rcfile since the /etc/profile file has a cd
$HOME in it - i removed that from this one to keep it from cd'ing to
/home/administrator every time, and I can still start up bash the normal
way (ie the Cygwin icon) and be taken to my home dir.

Thanks for the suggestion - it steered me in the right way!!
Luke

On Fri, 22 Sep 2000, Jonathan
Segal wrote:

> Neat idea!
> 
> To do this with bash, try something like
> 
> d:\cygwin\bin\bash.exe -c "cd %1; exec /usr/bin/bash -i"
> 
> replace d:\cygwin\bin with wherever bash is on your system.
> 
> Enjoy,
>  -Jonathan
> 
> Luke Bakken wrote:
> 
> > Hi,
> >
> > I've got an option for my "File Folder" file type so that if I right-click
> > on a folder, I can execute a cmd.exe prompt in that folder:
> >
> > cmd.exe /K cd "%1"
> >
> > What I'm wondering is if something analogous to the /K switch exists for
> > Bash, so that I can run a command before starting the login shell. the
> > "-c" option is similar, but the shell exits after running the command
> > specified. What I want is for it not to exit.
> >
> > Thanks,
> > Luke
> >
> > --
> > Want to unsubscribe from this list?
> > Send a message to cygwin-unsubscribe@sourceware.cygnus.com
> 
> --
> Jonathan Segal
> Principal Software Engineer/Group Leader, Bioinformatics
> Genome Therapeutics Corp.
> jonathan.segal@genomecorp.com
> (781) 398-2579
> 


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