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Date:	Wed, 2 Mar 2005 10:38:40 -0500
From:	Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Error linking under Cygwin: fork: can't reserve memory for stack XXX, Win32 error 487
Message-ID:	<20050302153840.GA15633@trixie.casa.cgf.cx>
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References:	<d04jgq$fr3$1 AT sea DOT gmane DOT org>
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On Wed, Mar 02, 2005 at 03:49:33PM +0100, Martin Egholm Nielsen wrote:
>Hi there,
>
>I've ended up here after having rounded the gcc-irc-channel and the 
>crosscompiler mailing-list.
>
>The story:
>
>I have compiled a gcc crosscompiler hosted under Cygwin using Dan 
>Kegel's Crosstool scripts.
>
>However, as my application is growing in size (number of .o files) I 
>suddenly get the following fault message from collect2.exe when trying 
>to link them all together:
>
>$ powerpc-405-linux-gnu-gcj --main=foo.Main *.o
>C:\cygwin\opt\crosstool\powerpc-405-linux-gnu\gcc-3.4.0-glibc-2.2.5\libexec\gcc\powerpc-405-linux-gnu\3.4.0\collect2.exe 
>(1740): *** fork: can't reserve memory for stack 0x40000 - 0x240000, Win32 
>error 487
><REPEATED>
>
>There is roughly 600 .o files to link together.
>
>Andrew Haley from RedHat mentioned that
>"There's some magic in Win32 to extend the size of a stack segment"
>"I can't remember the command"
>
>Can anybody on this list help me out here?

  % gcc -v --help |& grep stack
    -fstack-limit-register=<register>  Trap if the stack goes past <register>
    -fstack-limit-symbol=<name>  Trap if the stack goes past symbol <name>
    -fstack-check           Insert stack checking code into the program
    -fomit-frame-pointer    When possible do not generate stack frames
    -fdefer-pop             Defer popping functions args from stack until later
    -fstack-checking        Enable stack checking (same as `{$S+}')
    -fno-stack-checking     Disable stack checking (same as `{$S-} (default)')
    -mstack-arg-probe         Enable stack probing
    -mpreferred-stack-boundar Attempt to keep stack aligned to this power of 2
    --stack <size>                     Set size of the initial stack
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

However, this may actually also be a sign that you need to run rebaseall.

See /usr/share/doc/Cygwin/rebase*.README .

cgf

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