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Re: about -fpic/-fPIC option for gcc
Lin George wrote:
>
> Hello everyone,
>
>
> I am confused about the meaning and function of -fpic
> and -fPIC option of gcc. I am more confused when after
> reading the manual of gcc (for example, what means
> PIC, GOT, constant addresses, etc.). Could anyone
> explain to me what are their functions in easy to
> understand words?
>
> Here are the descriptions from gcc manual, which makes
> me confused. :-)
>
While -fpic is platform-dependent, -fPIC works always, but generates much
more code than -fpic does.
In practice, using an non-technical language, -fPIC will generate a code
capable to see things beyond
the normal scope, so that system can map the (position independent) code in
any case.
The rule is: if you want a fast and small code, and the target is
pic-enabled, use -fpic.
Otherwise, avoid headhaches using -fPIC always.
Regards,
Marcelo Slomp
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