fcf-protection only exists on x86

[jriddell]

the gcc flag fcf-protection only exists on x86 so it won't compile on arm, please add this patch or something similar

https://invent.kde.org/neon/extras/exiv2/-/blob/master/debian/patches/fcf-protection-only-on-x86.diff

[clanmills]

I believe this issue has been addressed on the 0.27-maintenance branch which I maintain. The changes have not yet been promoted to master.

There is an open issue to deal with this. #1355

[clanmills]

I think this has been taken care of on branch 0.27-maintenance (which is about to ship as Exiv2 v0.27.4) and branch main which is scheduled to ship Exiv2 v1.00 on 2021-12-15.

There is an unfinished PR which will be targeted at 'main' concerning rasperry pi. #1235.

@piponazo Can you deal with this and #1235. I suspect one good fix will be sufficient.

[piponazo]

It looks like the issue is correctly handled in 0.27-maintenance but I would like to double check. When I deal with the cross-compilation topic on the mainbranch, I will double check this.