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PIC is enabled by default on OS X.

[[ One difference between Darwin and many other Unix systems is that
no position-independent code (PIC) flag is needed, since it is the
default for Darwin. ]]

On Wed, May 6, 2015 at 6:45 PM, Rob Kendrick <> wrote:
> On Wed, May 06, 2015 at 07:34:18AM -0300, Luiz Henrique de Figueiredo wrote:
>> > Strictly speaking, -fPIC is needed for any shared library.  It just
>> > happens that there's a happy coincidence that means you can often get
>> > away without it on 32 bit x86.
>> Mac OS X does not need -fPIC, even in 64-bit machines.
> My guess here is that this is either that it is enabled by default there
> because they do ASLR, or it's some strange fall-out from OS X's bizarre
> binary format :)
> A shared library needs to be position independent code, that much is
> non-negotiable, but some tooling probably handles it for you.  It
> should always be safe to add.
> B.