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Date: Sun, 8 May 2005 20:02:17 -0400 (EDT)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: cygwin AT cygwin DOT com
Subject: Re: Solution, possible FAQ entry: make problem: execvp: /bin/sh: Illegal Argument
In-Reply-To: <20050508230637.GD3896@trixie.casa.cgf.cx>
Message-ID: <Pine.GSO.4.61.0505081958360.21700@slinky.cs.nyu.edu>
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On Sun, 8 May 2005, Christopher Faylor wrote:

> On Sun, May 08, 2005 at 04:11:08PM -0400, Igor Pechtchanski wrote:
> >On Sun, 8 May 2005, Joshua Daniel Franklin wrote:
> >
> >> > >On 5/6/05, J?rgen Havsberg Seland wrote:
> >> > >> This problem is (often) due to the command-line being to long for the
> >> > >> windows execution model. To circumvent this, mount the path of the
> >> > >> executable using the -X switch. For instance, use
> >> > >
> >> > On Sat, May 07, 2005 at 05:11:39PM -0700, Joshua Daniel Franklin wrote:
> >> > >I don't mind adding an FAQ, it looks like it's been asked few times. Any
> >> > >problem with replacing this ancient entry about MAKE_MODE (which is
> >> > >covered in the User's Guide)?
> >> > >
> >> > >http://cygwin.com/faq/faq_3.html#SEC93
> >> >
> >> On 5/7/05, Christopher Faylor wrote:
> >> > Fine with me.
> >>
> >> Updated with the following text (thanks, J?rgen):
> >>
> >> Errors of `make: execvp: /bin/sh: Illegal Argument' or `make: execvp:
> >> /bin/sh: Argument list too long' are often caused by the command-line
> >> being to long for the Windows execution model. To circumvent this,
> >> mount the path of the executable using the -X switch to enable cygexec
> >> for all executables in that folder; you will also need to exclude
> >> non-cygwin executables with the -x switch. Enabling cygexec causes
> >> cygwin executables to talk directly to one another, which increases
> >> the command-line limit. To enable cygexec for `/bin' and `/usr/bin',
> >> you can use these commands in a batch file:
> >>
> >> mount -X -b -f c:\cygwin\bin /bin
> >> mount -X -b -f c:\cygwin\bin /usr/bin
> >> mount -x -b -f c:\cygwin\bin\strace.exe /usr/bin/strace.exe
> >> mount -x -b -f c:\cygwin\bin\strace.exe /bin/strace.exe
> >> mount -x -b -f c:\cygwin\bin\cygcheck.exe /usr/bin/cygcheck.exe
> >> mount -x -b -f c:\cygwin\bin\cygcheck.exe /bin/cygcheck.exe
> >>
> >> Note that you must specifically exclude strace and cygcheck, which are
> >> not linked to the Cygwin DLL.
> >
> >Unless I'm mistaken, you'll also need to mention that invoking
> >/bin/cygcheck and /bin/strace (and /usr/bin/cygcheck, and /usr/bin/strace)
> >won't work with the above -- you'll need to also add
> >
> >mount -x -b -f c:\cygwin\bin\strace.exe /usr/bin/strace
> >mount -x -b -f c:\cygwin\bin\strace.exe /bin/strace
> >mount -x -b -f c:\cygwin\bin\cygcheck.exe /usr/bin/cygcheck
> >mount -x -b -f c:\cygwin\bin\cygcheck.exe /bin/cygcheck
> >
> >to be able to omit the .exe extension.
>
> Rather than theorize about what's needed, why not actually *try it*?
>
> I don't know which of the above is needed but I doubt that all of
> them are.

Well, I don't know of an easy way of testing whether the cygexec
functionality works, but I did try mounting /bin/cygcheck under another
name, and referring to it via cygcheck.exe didn't work (and vice versa).
Thus I concluded that mounting both the .exe version and the no-extension
version is needed.  Multiply that by all the various paths (/usr/bin vs.
/bin), and that gives 4 mounts for cygcheck (and 4 for strace).
Does the above make sense?
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

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