Port to x86 architecture #3280

Job	Run time
Build mlibc (x86_64, mlibc)	3m 33s
Compile sysdeps (dripos)	2m 10s
Build mlibc (x86_64, mlibc-static)	2m 58s
Compile sysdeps (lemon)	2m 25s
Build mlibc (x86_64, mlibc-shared)	2m 50s
Compile sysdeps (aero)	2m 29s
Build mlibc (x86_64, mlibc-ansi-only)	2m 49s
Compile sysdeps (ironclad)	2m 10s
Build mlibc (x86_64, mlibc-headers-only)	1m 48s
Build mlibc (riscv64, mlibc)	3m 29s
Compile sysdeps (lyre)	2m 26s
Build mlibc (riscv64, mlibc-static)	4m 33s
Compile sysdeps (keyronex)	2m 13s
Build mlibc (riscv64, mlibc-shared)	2m 56s
Build mlibc (riscv64, mlibc-ansi-only)	2m 54s
Build mlibc (riscv64, mlibc-headers-only)	1m 55s
Build mlibc (aarch64, mlibc)	3m 44s
Build mlibc (aarch64, mlibc-static)	3m 17s
Build mlibc (aarch64, mlibc-shared)	3m 5s
Build mlibc (aarch64, mlibc-ansi-only)	2m 55s
Build mlibc (aarch64, mlibc-headers-only)	1m 52s
	58m 31s

Provide feedback