[llvm-dev] Reloc::Default should trigger PIC on plateformq where PIE is the defaul

Rafael Avila de Espindola via llvm-dev llvm-dev at lists.llvm.org
Mon Jan 9 08:36:06 PST 2017

Davide Italiano <davide at freebsd.org> writes:

> On Mon, Jan 9, 2017 at 8:15 AM, Rafael Avila de Espindola via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>> Amaury SECHET via llvm-dev <llvm-dev at lists.llvm.org> writes:
>>> Pretty all is in the title. Is there a reason why this isn't done ? With
>>> debian and ubuntu switching to PIE by default, this is become more and more
>>> of a hassle to get this working properly, and I'd rather see that fixed in
>>> LLVM rather than in each driver that do something with it.
>>> Has someone already looked into this ? If so, what are the conclusions ?
>> I did some time ago. My memory is fuzzy, but I think my idea was to
>> remove "Default" completely and have the caller fully specify what the
>> desired reloc model was.
>> A target construction can then take an Optional<Model> and map None to
>> whatever default it wants.
> Rough plan (previously discussed): https://reviews.llvm.org/D21100#455440
> This is needed to LTO the FreeBSD base system, among others.

Thanks for digging it :-)


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