HEADS-UP: PIE enabled by default on main
Greg 'groggy' Lehey
grog at FreeBSD.org
Fri Feb 26 03:41:49 UTC 2021
On Thursday, 25 February 2021 at 21:22:43 -0500, Ed Maste wrote:
> On Thu, 25 Feb 2021 at 19:23, John Kennedy <warlock at phouka.net> wrote:
>>
>> Not sure if Ed Maste just wants to make sure that all the executables
>> are rebuilt as PIE (vs hit-and-miss) or there is a sneaker corner-case that
>> he knows about.
>
> The issue is that without a clean build you may have some .o files
> left around that are built without PIE enabled (i.e., compiled without
> -fPIE), and attempting to link them into a PIE executable will fail
> with an error like:
>
> ld: error: can't create dynamic relocation R_X86_64_32 against local symbol in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output
Ah, thanks. That makes more sense.
Greg
--
Sent from my desktop computer.
See complete headers for address and phone numbers.
This message is digitally signed. If your Microsoft mail program
reports problems, please read http://lemis.com/broken-MUA
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 163 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/freebsd-current/attachments/20210226/88eb1afc/attachment.sig>
More information about the freebsd-current
mailing list