#!/bin/bash

# This test assumes lld is already installed.

set -ex

function verify_ld_bfd {

  # Verify that /usr/bin/ld points to ld.bfd.

  ls -l /etc/alternatives/ld | grep ld.bfd

  # Run ld and verify it invokes ld.bfd

  /usr/bin/ld --version | grep 'GNU ld'

}

# Verify ld.bfd is still the system linker when lld is installed

verify_ld_bfd

# Set lld as the system linker

update-alternatives --set ld /usr/bin/ld.lld

# Verify that /usr/bin/ld points to lld

ls -l /etc/alternatives/ld | grep ld.lld

# Run ld and verify it invokes lld

/usr/bin/ld --version | grep 'LLD'

# Uninstall lld and make sure the /usr/bin/ld is reset to ld.bfd

dnf -y remove --noautoremove lld

verify_ld_bfd