[yocto] meta-mingw: unable to run executables on Windows

[Samuli Piippo]

patch sent.
On Thu, 15 Nov 2018 at 11:17, Burton, Ross <ross.burton at intel.com> wrote:
>
> Good work!
>
> Can we have a patch from someone please?
>
> Ross
>
> On Thu, 15 Nov 2018 at 08:35, Samuli Piippo <samuli.piippo at gmail.com> wrote:
>>
>> On Thu, 15 Nov 2018 at 07:01, Khem Raj <raj.khem at gmail.com> wrote:
>> >
>> > On Wed, Nov 14, 2018 at 8:08 PM Joshua Watt <jpewhacker at gmail.com> wrote:
>> > >
>> > > On Wed, Nov 14, 2018 at 8:41 PM Mark Hatle <mark.hatle at windriver.com> wrote:
>> > > >
>> > > > On 11/14/18 9:54 AM, Mark Hatle wrote:
>> > > > > On 11/13/18 3:56 AM, Samuli Piippo wrote:
>> > > > >> Hi,
>> > > > >>
>> > > > >> I've just upgraded poky and meta-mingw layers from sumo to thud and as a result
>> > > > >> a lot of the executables in the toolchain no longer run correctly on Windows.
>> > > > >
>> > > > > Which version of windows?
>> > > > >
>> > > > >> I've built meta-toolchain for SDKMACHINE=x86_64-mingw32. From that, gcc/g++ work
>> > > > >> fine on Windows 10, but ar, as, objdumb, and others hang for ~30 seconds and
>> > > > >> exit without any output.
>> > > > >>
>> > > > >> Has anyone else seen this?
>> > > > >
>> > > > > I've run a toolchain made on mingw after sumo, but before thud's release.  I'll
>> > > > > see if I can find a VM and give it a try later today.
>> > > >
>> > > > I'm running on Windows 7 for my testing (ya, I know old.. but it's what I got.)
>> > > >
>> > > > Can you try adding the following to your conf/local.conf: GCCPIE_mingw32 = ""
>> >
>> > this will be effective just for SDK and native versions I hope, but in
>> > cases if we
>> > have this override also applicable for target then this fix is not
>> > correct. We have
>> > to keep using it for target builds.
>> >
>> > > >
>> > > > I found that the SDK was not working properly here as well, but only binutils.
>> > > > The above seems to fix the issue.  (You do have to rebuild your SDK.)
>> > >
>> > > I also saw this issue on Windows 7, and your described fix corrected
>> > > it (Thanks!). On the plus side, the automated SDK testing that I'm
>> > > working on discovered it as well (e.g. the tests failed because of
>> > > it), which means that the tests are working and should help prevent
>> > > issues like this in the future once I get it merged.
>> > >
>>
>> bisect finished last night and the winner was: commit
>> 491082c56ce34f3fd644f8d4457ccd52af951087
>> poky.conf: Enable security flags+pie by defaultEnable security
>> flags+pie by default
>>
>> Adding GCCPIE_mingw32 = "" fixes this also for Windows 10
>> --
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