mmap on Linux broken???

mmap on Linux broken???

[Salman Khilji]

I tried to use the -mapped option of gdb to dump the symbol table into a 
memory mapped file, but gdb compains that mmap() is not available on my 
system---either missig or broken?  I am using Mandrake 8.1 which has the 
2.4.8 kernel.   I thought memory mapped files was available on Linux---am I 
wrong?

>
>Why do you think that? I've been of the impression that you can't take
>even part of the code. I don't even know if you can call binutils without
>the code having to be copyleft. I recall hearing of other programs having
>to remove calls to GNU libraries just to stay out of the copyleft 
>restristions.
>


Hmm... this means that you can't create a proprietory GUI for gdb...right?   
Anyone heard of such a thing?  Sorry this is getting off topic into 
licensing issues.

So this means that if you use in your proprietory software a call to 
CreateProcess() or exec() to launch binutils (objdump) it would be illegal?  
Also what if you use objdump standalone and create a dump file.  Then you 
parse the dump file using your own code?



Salman


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Re: mmap on Linux broken???

[Daniel Jacobowitz]

On Sun, Jan 27, 2002 at 12:35:31AM +0000, Salman Khilji wrote:
> I tried to use the -mapped option of gdb to dump the symbol table into a 
> memory mapped file, but gdb compains that mmap() is not available on my 
> system---either missig or broken?  I am using Mandrake 8.1 which has the 
> 2.4.8 kernel.   I thought memory mapped files was available on Linux---am I 
> wrong?

You need to configure --with-mmalloc to use this feature.  Either the
code or the error needs to be tweaked.

> Hmm... this means that you can't create a proprietory GUI for gdb...right?   
> 
> Anyone heard of such a thing?  Sorry this is getting off topic into 
> licensing issues.
> 
> So this means that if you use in your proprietory software a call to 
> CreateProcess() or exec() to launch binutils (objdump) it would be illegal?  
> 
> Also what if you use objdump standalone and create a dump file.  Then you 
> parse the dump file using your own code?

Please take this to a more legal-oriented list, thanks.

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer