[COMPILER REQUEST]: gcc 4.8.x for aarch64

[dkm]

Compiler name

gcc

Compiler version

4.8.*

Compiler language

all

Compiler homepage

gcc.gnu.org

Motivation

Asked by gcc devs.

[pinskia]

Note the reason why this would be useful for aarch64 (arm64) is because that is the first version of GCC that included aarch64 support.
I wanted to see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114843 was reproducible since the backend was added.

[dkm]

FTR, I tried using ct-ng for this compiler, but that's not a good fit. ct-ng is too recent: isl version is not old enough and fails the config test, the configure command line uses options that did not exist. I'll probably skip this and do a bespoke build just for this one.