add toolchains

build.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+# exit script if any command fails
+set -e
+set -o pipefail
+
+unamestr=$(uname)
+RDIR=$(pwd)
+
+# ignore riscv-tools for submodule init recursive
+# you must do this globally (otherwise riscv-tools deep
+# in the submodule tree will get pulled anyway
+git config --global submodule.riscv-tools.update none
+git config --global submodule.esp-tools.update none
+git config --global submodule.experimental-blocks.update none
+git submodule update --init --recursive #--jobs 8
+# unignore riscv-tools,catapult-shell2 globally
+git config --global --unset submodule.riscv-tools.update
+git config --global --unset submodule.experimental-blocks.update