e_info() {
	printf "\e[32m* %s\e[0m\n" "$@"
}
e_warn() {
	printf "\e[33m* %s\e[0m\n" "$@"

}
exit_err() {
	printf "\e[31m* Error: %s\e[0m\n" "$@"
	exit 1;
}
unlink_expected() {
	local file="$1"
	shift
	local expected="$1"
	shift
	local actual
	if [[ -h "${file}" ]]; then
		actual="$(readlink "${file}")"
		if [[ "${expected}" == "${actual}" ]]; then
			e_warn "Unlinking ${file}"
			unlink "${file}" || exit_err "Can't unlink ${file}"
		else
			exit_err "${file} has unexpected content: ${actual} ( expected: ${expected} )"
		fi
	elif [[ -e "${file}" ]]; then
		exit_err "${file} is not a symlink"
	else
		e_info "${file} already removed"
	fi
}
relink_expected() {
	local file="$1"
	shift
	local expected="$1"
	shift
	local actual
	if [[ ! -e "${file}" ]]; then
		e_warn "Linking ${file} to ${expected}"
		ln -s "${expected}" "${file}"
	elif [[ ! -h "${file}" ]]; then
		exit_err "${file} exists and is not a symlink"
	else
		actual="$(readlink "${file}")"
		if [[ "${expected}" != "${actual}" ]]; then
			exit_err "${file} exists and doesn't link to ${expected} (got: ${actual})"
		else
			e_info "${file} already linked"
		fi
	fi
}

arch_prefix="x86_64-pc-linux-gnu"

BINUTILS_TARGETS=(
	addr2line
	ar
	as
	c++filt
	coffdump
	dlltool
	dllwrap
	dwp
	elfedit
	gprof
	ld
	ld.bfd
	ld.gold
	nm
	objcopy
	objdump
	ranlib
	readelf
	size
	srcconv
	strings
	strip
	sysdump
	windmc
	windres
)
GCC_TARGETS=(
	c++
	cpp
	g++
	gcc
	gccgo
	gcov
	gfortran
)
if [[ "${RELINK:-0}" == "0" ]]; then
	fixlink() {
		unlink_expected "$@"
	}
else
	fixlink() {
		relink_expected "$@"
	}
fi

for target in "${BINUTILS_TARGETS[@]}"; do
		fixlink "/usr/bin/${target}" "${arch_prefix}-${target}"
done

gcc_root="$(gcc-config -B)"

fixlink "/usr/bin/cc"     "${gcc_root}/gcc"
for target in "${GCC_TARGETS[@]}"; do
	fixlink "/usr/bin/${target}"    "${gcc_root}/${target}"
done