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Re: PING^N: [PATCH] Add --enable-static-pie to build static PIE [BZ #19574]
On Fri, Nov 24, 2017 at 2:24 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Fri, Nov 24, 2017 at 7:03 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
>> On Fri, Nov 24, 2017 at 5:06 AM, Szabolcs Nagy <szabolcs.nagy@arm.com> wrote:
>>> On 23/11/17 13:59, H.J. Lu wrote:
>>>> On Mon, Nov 20, 2017 at 4:16 AM, Szabolcs Nagy <szabolcs.nagy@arm.com> wrote:
>>>>> On 19/11/17 02:40, H.J. Lu wrote:
>>>>>> 3. Linker should resolve undefined weak symbols to 0 in static PIE:
>>>>>>
>>>>>> https://sourceware.org/bugzilla/show_bug.cgi?id=22269
>>>>>>
>>>>>> 4. Many ELF backend linkers incorrectly check bfd_link_pic for TLS
>>>>>> relocations, which should check bfd_link_executable instead:
>>>>>>
>>>>>> https://sourceware.org/bugzilla/show_bug.cgi?id=22263
>>>>>>
>>>>>> Tested on i686 and x86-64.
>>>>>>
>>>>>> Build results of build-many-glibcs.py with --enable-static-pie with all
>>>>>> patches for static PIE applied are
>>>>>>
>>>>>> PASS: glibcs-aarch64_be-linux-gnu build
>>>>>> PASS: glibcs-aarch64-linux-gnu build
>>>>>
>>>>> i'd expect these to fail on current binutils master
>>>>>
>>>>> (linking with undefweak symbol fails now because of the issues
>>>>> listed above, i'll try to prepare a binutils patch)
>>>>>
>>>>
>>>> Do you think you can fix arm64 for glibc 2.27?
>>>>
>>>
>>> the aarch64 glibc tests pass with the pie patches and
>>> the start code fix i posted (and with a fixed bfd linker).
>>
>> Great. Linker changes look quite straight forward. I will
>> update my commit message.
>
> Here is the patch with the updated commit message.
>
> Thanks.
Static PIE works on i686, x32 and x86-64 as well as aarch64
with a patch. I will check in my patch and update
https://sourceware.org/glibc/wiki/PortStatus
next week if there no objection.
--
H.J.