# Python build-webrtc failed

**URL:** <https://react-native-webrtc.discourse.group/t/python-build-webrtc-failed/104>\
**Category:** Uncategorized\
**Created:** [April 30, 2019, 9:12am UTC](https://react-native-webrtc.discourse.group/t/python-build-webrtc-failed/104 "2019-04-30T09:12:16Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Phil\_osl3189](https://avatars.discourse-cdn.com/v4/letter/p/cdc98d/32.png) [@Phil\_osl3189](https://react-native-webrtc.discourse.group/u/Phil_osl3189)\
**Post date:** [April 30, 2019, 9:12am UTC](https://react-native-webrtc.discourse.group/t/python-build-webrtc-failed/104/1 "2019-04-30T09:12:16Z")

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hello all, i am new to webrtc and i am following the BuildingWebRTC.md at react-native-webrtc/Documentation and tried to run this command

python build-webrtc.py --setup --android ~/src/

I am using windows 7 and the ~/ didn’t seem to work as a path and i changed it to

python build-webrtc.py --setup --android …/src/

after i created a folder called src under reac-native-webrtc

The command began to run, and it retrieved ‘depot\_tools’, however it stops with the error that ‘fetch’ is not recognised as an internal or external command.

I maybe missing something simple and stupid but i couldn’t figure out what it is. Can someone help pointing out what it is? Please see the screenshot of the cmd error below

 ![fetchisnot](https://global.discourse-cdn.com/free1/uploads/reactnativewebrtc1/original/1X/66d964ef8af2a776549ea5c9911c104e316fb1ea.jpeg)

Thank you so much!!

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**Author:** ![saghul](https://yyz2.discourse-cdn.com/free1/user_avatar/react-native-webrtc.discourse.group/saghul/32/4_2.png) [@saghul](https://react-native-webrtc.discourse.group/u/saghul)\
**Post date:** [April 30, 2019, 12:57pm UTC](https://react-native-webrtc.discourse.group/t/python-build-webrtc-failed/104/2 "2019-04-30T12:57:08Z")

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Sorry, Windows is not a supported platform for building the libraries.

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**Author:** ![Phil\_osl3189](https://avatars.discourse-cdn.com/v4/letter/p/cdc98d/32.png) [@Phil\_osl3189](https://react-native-webrtc.discourse.group/u/Phil_osl3189)\
**Post date:** [May 14, 2019, 4:08am UTC](https://react-native-webrtc.discourse.group/t/python-build-webrtc-failed/104/3 "2019-05-14T04:08:35Z")

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Thanks for your answer saghul. it’s been a while because i was busy with other things… i need to ask, in that case then, must the said library be built afresh for any new individual project or would there be a shared repository that can be downloaded and used in windows environment? this is also to ask if implementing rn-webrtc for android must be done completely in Linux?

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**Author:** ![saghul](https://yyz2.discourse-cdn.com/free1/user_avatar/react-native-webrtc.discourse.group/saghul/32/4_2.png) [@saghul](https://react-native-webrtc.discourse.group/u/saghul)\
**Post date:** [May 14, 2019, 7:58am UTC](https://react-native-webrtc.discourse.group/t/python-build-webrtc-failed/104/4 "2019-05-14T07:58:12Z")

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> [@Phil\_osl3189](#):
>
> i need to ask, in that case then, must the said library be built afresh for any new individual project or would there be a shared repository that can be downloaded and used in windows environment?

You don’t need to build WebRTC yourself, the react-native-webrtc already includes prebuilt binaries which you can use on any environment React Native supports, that includes Windows.

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**Author:** ![Phil\_osl3189](https://avatars.discourse-cdn.com/v4/letter/p/cdc98d/32.png) [@Phil\_osl3189](https://react-native-webrtc.discourse.group/u/Phil_osl3189)\
**Post date:** [May 14, 2019, 8:01am UTC](https://react-native-webrtc.discourse.group/t/python-build-webrtc-failed/104/5 "2019-05-14T08:01:45Z")

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wow, that saved me from trying to install an Ubuntu from scratch. Thanks!