Add cross-toolchain wrappers and update scripts

Red Bear OS Team

bin/x86_64-unknown-redox-ranlib

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+script_dir="$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)"
+root_dir="$(CDPATH= cd -- "${script_dir}/.." && pwd)"
+
+sysroot="${REDBEAR_REDOX_SYSROOT:-${root_dir}/prefix/x86_64-unknown-redox/sysroot}"
+tool="${sysroot}/bin/x86_64-unknown-redox-ranlib"
+
+if [ ! -x "${tool}" ]; then
+    echo "error: missing toolchain binary: ${tool}" >&2
+    echo "hint: run 'make prefix' or otherwise populate ${sysroot}" >&2
+    exit 1
+fi
+
+exec "${tool}" "$@"