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Gcc 6.4 upgrade - need rebuild whole system ?



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ABI issue was upgrade from gcc-4.9.3 to gcc-5.3.0

ABI compatibility is not an issue when upgrading from gcc-5.4.0 to gcc-6.4.0.


On 12/3/2017 at 4:56 AM, Otakku said:

Hi folks, I read that on Gentoo news, about the update on system profile to them : https://www.gentoo.org/support/news-items/2017-11-30-new-17-profiles.html

and I ask if I need rebuild the whole system ? 


I mean, I was using gcc 5.4.0 and I upgrade to 6.4 both withour hardened, so I need rebuild ?

Rebuild prevents future build failures if pie is enabled prior to building gcc-6.4.0

This is forced on gentoo stable amd64 when user switch's their gentoo profile from 13.0 to 17.0

Funtoo profile has PIE use masked for gcc.

/var/git/meta-repo/kits/core-kit/profiles/base/package.use.mask:sys-devel/gcc pie

I unmasked gcc-6.4.0 , left pie disabled, no rebuild of world was required.

funtoo rj # emerge -pv gcc

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   #] sys-devel/gcc-6.4.0:6.4.0::core-kit  USE="cxx fortran nls openmp -ada (-altivec) -doc (-go) -graphite (-hardened) (-libssp) (-multilib) -objc -objc++ -pch (-pie) (-sanitize) -ssp -vanilla" 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB




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