[usbdev] Partial build files

Temporary example scripts and BUILD files illustrating
how to build stream_test application and the serial-port
only libusb-free variant.

Change-Id: Iecd5d81161cdb1b27413bfdf727e72aea9b84486
Signed-off-by: Adrian Lees <a.lees@lowrisc.org>

sw/host/tests/usbdev/usbdev_stream/BUILD

diff --git a/sw/host/tests/usbdev/usbdev_stream/BUILD b/sw/host/tests/usbdev/usbdev_stream/BUILD
new file mode 100644
index 0000000..bec4500
--- /dev/null
+++ b/sw/host/tests/usbdev/usbdev_stream/BUILD
@@ -0,0 +1,41 @@
+# Copyright lowRISC contributors (OpenTitan project).
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
+package(default_visibility = ["//visibility:public"])
+
+cc_library(
+    name = "usbdev_stream",
+    srcs = [
+        "stream_test.cc",
+        "usb_device.cc",
+        "usbdev_int.cc",
+        "usbdev_iso.cc",
+        "usbdev_serial.cc",
+        "usbdev_stream.cc",
+        "usbdev_utils.cc",
+    ],
+    hdrs = [
+        "stream_test.h",
+        "usb_device.h",
+        "usbdev_int.h",
+        "usbdev_iso.h",
+        "usbdev_serial.h",
+        "usbdev_stream.h",
+        "usbdev_utils.h",
+    ],
+    # Not a local define since targets that depend on this need to use
+    # the same configuration.
+    defines = [
+        "STREAMTEST_LIBUSB=1",
+    ],
+    linkopts = ["-lusb-1.0"],
+)
+
+cc_binary(
+    name = "stream_test",
+    srcs = ["stream_test.cc"],
+    deps = [
+        ":usbdev_stream",
+    ],
+)

sw/host/tests/usbdev/usbdev_stream/build.sh

diff --git a/sw/host/tests/usbdev/usbdev_stream/build.sh b/sw/host/tests/usbdev/usbdev_stream/build.sh
new file mode 100755
index 0000000..a120bac
--- /dev/null
+++ b/sw/host/tests/usbdev/usbdev_stream/build.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+# Copyright lowRISC contributors (OpenTitan project).
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
+g++ -Wall -Werror -std=c++14 -c -o stream_test.o -DSTREAMTEST_LIBUSB=1 stream_test.cc
+g++ -Wall -Werror -std=c++14 -c -o usbdev_iso.o -DSTREAMTEST_LIBUSB=1 usbdev_iso.cc
+g++ -Wall -Werror -std=c++14 -c -o usbdev_int.o -DSTREAMTEST_LIBUSB=1 usbdev_int.cc
+g++ -Wall -Werror -std=c++14 -c -o usbdev_serial.o -DSTREAMTEST_LIBUSB=1 usbdev_serial.cc
+g++ -Wall -Werror -std=c++14 -c -o usbdev_stream.o -DSTREAMTEST_LIBUSB=1 usbdev_stream.cc
+g++ -Wall -Werror -std=c++14 -c -o usbdev_utils.o -DSTREAMTEST_LIBUSB=1 usbdev_utils.cc
+g++ -Wall -Werror -std=c++14 -c -o usb_device.o -DSTREAMTEST_LIBUSB=1 usb_device.cc
+
+g++ -g -O2 -o stream_test stream_test.o usbdev_iso.o usbdev_int.o usbdev_serial.o usbdev_stream.o usbdev_utils.o usb_device.o -lusb-1.0

sw/host/tests/usbdev/usbdev_stream/build_standalone.sh

diff --git a/sw/host/tests/usbdev/usbdev_stream/build_standalone.sh b/sw/host/tests/usbdev/usbdev_stream/build_standalone.sh
new file mode 100755
index 0000000..82557ff
--- /dev/null
+++ b/sw/host/tests/usbdev/usbdev_stream/build_standalone.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+# Copyright lowRISC contributors (OpenTitan project).
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
+g++ -std=c++14 -Wall -Werror -g -O2 -o serial_test stream_test.cc usbdev_serial.cc usbdev_stream.cc usbdev_utils.cc usb_device.cc