# VxWorks Software Development Kit (SDK)

**URL:** <https://forums.windriver.com/t/vxworks-software-development-kit-sdk/43>\
**Category:** VxWorks SDK\
**Created:** [October 11, 2021, 12:19pm UTC](https://forums.windriver.com/t/vxworks-software-development-kit-sdk/43 "2021-10-11T12:19:02Z")\
**Posts on this page:** 1\
**Showing post:** 9

<div class="post-metadata">

**Author:** ![dan.milea](https://avatars.discourse-cdn.com/v4/letter/d/4bbf92/32.png) [@dan.milea](https://forums.windriver.com/u/dan.milea)\
**Post date:** [November 2, 2022, 10:17am UTC](https://forums.windriver.com/t/vxworks-software-development-kit-sdk/43/9 "2022-11-02T10:17:35Z")

</div>

Please verify that the sysroot directory is copied correctly to the SD card. When doing the copy from the console, make sure to include the -L flag (always follow symbolic links in SOURCE).

E.g. cp -rL wrsdk-vxworks7-raspberrypi4b/vxsdk/sdcard/sysroot /media/dan/BA95-FF39/

This is a log section showing how to start Python on a Raspberry Pi 4 target running the VxWorks kernel from the 22.03 release of the RPi4 SDK. It’s important to include the rtpSpStackSize=0x1000000 step, as mentioned in the RPi4 SDK [documentation](https://labs.windriver.com/downloads/wrsdk-vxworks7-docs/2203/README_raspberrypi4b.html).

```auto
-> rtpSpStackSize=0x1000000
rtpSpStackSize = 0xffffffff80c33230: value = 16777216 = 0x1000000
-> cmd
[vxWorks *]# cd /sd0a/
[vxWorks *]# python3
Launching process 'python3' ...
Process 'python3' (process Id = 0xffff8000004b6270) launched.

Python 3.9.5 (default, Mar 15 2022, 17:57:20) 
[Clang 12.0.1.2 (http://bitbucket.wrs.com/scm/llvm/clang.git 6953a165f54ad1a885 on vxworks
Type "help", "copyright", "credits" or "license" for more information.
>>> >>> import os;os.name
'posix'
>>> import sys;sys.platform
'vxworks'
>>> 
>>> 
>>> ^D
[vxWorks *]# 
[vxWorks *]#

```

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