64-bit machine generate an executable where long is 32-bits and pointers are 64-bits.

[Kraiser]

Ian Lance Taylor-3 wrote:
> 
> Kraiser <pietiatibia1@gmail.com> writes:
> 
>> It's my problem actually any possible way to do that ?
>> well -m32 isn't actually what i'm looking for because it compiles code
>> for
>> 32-bit enviorment along with pointers(32 bit) i need pointers to be
>> 64-bit
>> but long = 32bit just like it is on Windows LLP64.
>> If the feature isn't exist maybe it would be awesome to add this in
>> future
>> releases of GCC :?
>> seems like more people needs it:
>> http://stackoverflow.com/questions/1857296/can-gcc-on-ubuntu-on-a-64-bit-machine-generate-an-executable-where-long-is-32-bit
> 
> Compiler options of this sort are problematic because they change the
> ABI.  That is, code compiled with this option can not be safely linked
> with code compiled without this option.  Code compiled with this
> option can not be safely used with dynamic librares compiled without
> this option.  Code compiled with this option can not safely make
> system calls on a kernel compiled without this option (e.g., on
> GNU/Linux, the stat structure includes fields of type unsigned long,
> so the stat system call will not work as expected).
> 
> So the only people who can safely use this option are people who are
> prepared to recompile their entire system.
> 
> It's a very simple change to make to the source code, but that doesn't
> necessarily mean that it is a good idea.
> 
> Ian
> 
> 
There is an option in config of linux kernel to recompile kernel with it ?
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