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Re: [PING][PATCH][1-3] New configure options that make the compiler use -fPIE and -pie as default option
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Magnus Granberg <zorry at gentoo dot org>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Sun, 11 Jan 2015 09:40:04 -0800
- Subject: Re: [PING][PATCH][1-3] New configure options that make the compiler use -fPIE and -pie as default option
- Authentication-results: sourceware.org; auth=none
- References: <54B239EA dot 8080807 at gmail dot com> <CAMe9rOqmpoL4VanN--v2+-Pry1-1O7jscPQs_3CnvT8EHKB7_A at mail dot gmail dot com> <1544032 dot XE9RNgkelG at laptop1 dot gw dot ume dot nu> <6907479 dot 4jgt2i1BcV at laptop1 dot gw dot ume dot nu>
On Sun, Jan 11, 2015 at 6:04 AM, Magnus Granberg <zorry@gentoo.org> wrote:
> sÃndag 11 januari 2015 14.29.56 skrev Magnus Granberg:
>> sÃndag 11 januari 2015 03.37.14 skrev H.J. Lu:
>> > On Sun, Jan 11, 2015 at 1:05 AM, Daniel Micay <danielmicay@gmail.com>
> wrote:
>> > > On 11/01/15 03:52 AM, Daniel Micay wrote:
>> > >> This branch works well for me. It doesn't automatically turn off the
>> > >> linker flag when -fno-PIE or -fno-PIC are passed like most of the
>> > >> wrapper scripts / downstream patches do, but that might not be a
>> > >> problem
>> > >> in practice.
>> >
>> > -fno-PIE and -fno-PIC aren't linking options. We don't turn on PIE with
>> >
>> > # gcc -fPIE ....
>> >
>> > You need to use
>> >
>> > # gcc -pie -fPIE
>> >
>> > To turn off PIE, you should use
>> >
>> > # gcc -no-pie -fno-PIE
>> >
>> > > Er, Thunderbird did a terrible job handling my manual reply (wasn't
>> > > subscribed to the list). Sorry about that.
>> > >
>> > > For clarity, this is about H.J. Lu's branch at:
>> > >
>> > > https://gcc.gnu.org/git/?p=gcc.git;a=shortlog;h=refs/heads/hjl/pie
>>
>> It works fine for me but 6 test fails in the testsuite.
>> Do we realy want to pass -fPIE -fPIC when someone do -fno-PIC or -fno-pic?
> On the crtstuff do we and --fPIE or should the Makefile handel it?
> I did let the Makefile handel it.
I will fix them shortly.
--
H.J.