RE: Gcc/ld and long command lines (> 32k)

[Larry Hall <cygwin-lh at cygwin dot com>]

Right.  I think that goes along with the notion that the '@' stuff is 
enabled for Cygwin processes invoked from non-Cygwin ones.  But perhaps
I was unclear about what I was looking for.  Peter's response seemed to 
indicate that he tried *both* the suggested mount option and the '@file'
option simultaneously.  It also wasn't clear whether he was using the 
'@file' option as invoked by a Windows process (perhaps even as a variant
of Barry's example below) or whether he tried it from a Cygwin process 
(directly).  Ditto for the mount option.  I think Peter was trying to 
indicate that these options work but it's a little confusing given that
Chris's previous statements say that '@file' should be a solution for 
Windows processes and the mount option should be a solution for Cygwin
processes.  It's unclear whether Peter is confirming or refuting any 
part or parts of Chris' statement.  That's what I was hoping to get some 
clarification on.

Larry



At 11:05 AM 4/9/2004, you wrote:
>For the record, the immediate parent can be a DOS/Windows program that is
>itself called by a Cygwin program (in this example, bash).
>
>/tmp> wc t
>      1   11850  404970 t
>/tmp> /bin/echo @t
>@t
>/tmp> /bin/echo @t | wc
>      1       1       3
>/tmp> $(cygpath -u ${COMSPEC}) /c $(cygpath -w /bin/echo) @t | wc
>      1   11850  404970
>
>But the handling of quotes is likely to be ugly.
>
>-----Original Message-----
>From: Larry Hall
>Sent: Friday, April 09, 2004 9:18 AM
>To: Peter A. Castro; cygwin@cygwin.com
>Subject: Re: Gcc/ld and long command lines (> 32k)
>
>At 12:00 AM 4/9/2004, you wrote:
>>On Thu, 8 Apr 2004, Christopher Faylor wrote:
>>
>>> On Thu, Apr 08, 2004 at 10:07:19PM +0200, Johan Holmberg wrote:
>>> >A short description of my enironment:
>>> >
>>> >- the programs I'm building are C/C++ compilers
>>> >
>>> >- I use GCC in Cygwin to get a "second opinion" from another compiler
>>> >  than the one we use normally (Visual C++).
>>> >
>>> >- I use Cons as my build tool (a Perl program).
>>> >  I use ActiveState Perl (not Cygwin Perl).
>>> >
>>> >So yes, I'm working "outside a Cygwin environment".
>>>
>>> Ok, so, sorry, but I wasn't thinking clearly.  The '-X' option to mount
>>> only works when a cygwin programs which invoke another cygwin program.
>>> If you have a normal windows program running a cygwin program, your only
>>> option for a longer command line is (shudder) '@'.
>>
>>Well, Chris, for better or worst, this "feature" does seem to work.  I
>>did a quick test of this using an @file which is 81k long and it works!
>>You will need to remount both /usr/bin and /usr/lib with the "--system
>>--binary -X" options.  Then put your list of objects into @file and run
>>gcc @file.
>>For the record, I still feel that a better practice is to do archiving of
>>object files and link with the library, but if this gets you going, this
>>time, more power to ya.
>
>But wait.  You're mixing advice (Chris's) it seems.  He said @file would
>be a solution if you were working outside of Cygwin shells and that 
>remounting with -X could be a solution if you were inside.  So it sounds
>like you tried both, and perhaps together, but it's unclear whether you
>ran your tests from a Cygwin shell prompt, a Windows DOS prompt, or both.
>Can you clarify what you tried and where?
>
>Thanks,
>
>--
>Larry Hall                              http://www.rfk.com
>RFK Partners, Inc.                      (508) 893-9779 - RFK Office
>838 Washington Street                   (508) 893-9889 - FAX
>Holliston, MA 01746                     
>
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