Disable linker relaxation for riscv64

[rota1001]

Previously, a large amount of time was taken during the linker relaxation of riscv64 architecture.

This disables it and reduces the link time to several seconds.

The success compilation process is as follows:

1. Set Output format to elf64-littleriscv in menuconfig
2. Use the following command to compile it

make CROSS_COMPILE=riscv64-linux-gnu- -C tools/lkl

[thehajime]

lgtm.
I wasn't aware of a support for riscv btw. Is lkl functional ?

[rota1001]

lgtm. I wasn't aware of a support for riscv btw. Is lkl functional ?

Yes, it is functional.

I have tested it on the Linux kernel running on the QEMU virt machine. I used kbox[1] as an example, which is a Linux kernel sandbox implemented with LKL, and it works well. This is my build process[2].

[1] https://github.com/sysprog21/kbox/
[2] https://hackmd.io/@rota1001/kbox-rv64#Run-it-on-riscv64

[tavip]

LGTM, thanks @rota1001 !

BTW, there is not need to manually set OUTPUT_FORMAT with menuconfig. I just run make CROSS_COMPILE=riscv64-linux-gnu- -C tools/lkl and it compiled fine here.