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Date: Fri, 22 Nov 2002 20:34:27 -0500
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: impure_ptr/Mingw and cygwin
Message-ID: <20021123013427.GA14697@redhat.com>
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References: <3DDED511 DOT 7 AT Salira DOT com>
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On Fri, Nov 22, 2002 at 05:08:33PM -0800, Andrew DeFaria wrote:
>I wish to use -mno-cygwin to produce an executable that can work without 
>Cygwin installed. I have successfully done this before. Now I'm adding 
>some functionality to my program and it is no longer working! I've 
>worked it out such that it will compile and link but when my program 
>runs it simply stops returning an exit code of 5. Running this under gdb 
>produces a SIGSIGV Segmentation fault then you attempt to run it.
>
>I've whittled it down to the bare minimum to reproduce the problem. 
>Seems to me the problem is somewhere between newer versions of gcc 3.X 
>and Mingw.
>
>File: foo.c:
>
>#include <stdio.h>
>int main (void) {
> printf ("Hello World\n");
> fprintf (stderr, "%s\n", "Hello World 2");
>}
>
>$ gcc -g foo.c -mno-cygwin -I/usr/include -o foo -liberty -lcrtdll -lg
>$ foo
>$
>
>Note that if I do not put -lg then I get:
>
>/tmp/ccKAyr4S.o(.text+0x4b): In function `main':
>/dview/defaria_2.0/salira/neopon/build/maketools/foo.c:4: undefined 
>reference to `_impure_ptr'
>
>Any ideas?

Undoubtedly neither -liberty nor -lg are compiled using -mno-cygwin.

cgf

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