Added submodule contents into tree

externals/mbedtls/programs/test/dlopen_demo.sh

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+#!/bin/sh
+
+# Run the shared library dynamic loading demo program.
+# This is only expected to work when Mbed TLS is built as a shared library.
+
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+
+. "${0%/*}/../demo_common.sh"
+
+msg "Test the dynamic loading of libmbed*"
+
+program="$programs_dir/test/dlopen"
+library_dir="$root_dir/library"
+
+# Skip this test if we don't have a shared library build. Detect this
+# through the absence of the demo program.
+if [ ! -e "$program" ]; then
+    msg "$0: this demo requires a shared library build."
+    # Exit with a success status so that this counts as a pass for run_demos.py.
+    exit
+fi
+
+# ELF-based Unix-like (Linux, *BSD, Solaris, ...)
+if [ -n "${LD_LIBRARY_PATH-}" ]; then
+    LD_LIBRARY_PATH="$library_dir:$LD_LIBRARY_PATH"
+else
+    LD_LIBRARY_PATH="$library_dir"
+fi
+export LD_LIBRARY_PATH
+
+# OSX/macOS
+if [ -n "${DYLD_LIBRARY_PATH-}" ]; then
+    DYLD_LIBRARY_PATH="$library_dir:$DYLD_LIBRARY_PATH"
+else
+    DYLD_LIBRARY_PATH="$library_dir"
+fi
+export DYLD_LIBRARY_PATH
+
+msg "Running dynamic loading test program: $program"
+msg "Loading libraries from: $library_dir"
+"$program"