./emsdk install latest : Installation failed

Hi community :)
I have some loading error ...
I'm on mac osx 10.13.5 & python 2.7.15.
Can you help me please ?

$ ./emsdk install latest

Fetching all tags from Emscripten Github repository...
Done. 134 tagged releases available, latest is 1.38.6.
Fetching all tags from Binaryen Github repository...
Done. 61 tagged Binaryen releases available, latest is 1.38.6.
Fetching all precompiled tagged releases..
Error downloading URL 'https://s3.amazonaws.com/mozilla-games/emscripten/packages/llvm/tag/osx_32bit/index.txt': <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:726)>
Error downloading URL 'https://s3.amazonaws.com/mozilla-games/emscripten/packages/llvm/tag/osx_64bit/index.txt': <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:726)>
Installing SDK 'sdk-1.35.0-64bit'..
Installing tool 'clang-e1.35.0-64bit'..
Error downloading URL 'https://s3.amazonaws.com/mozilla-games/emscripten/packages/emscripten-clang_e1.35.0.tar.gz': <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:726)>
Installation failed!

$ python --version

Python 2.7.15

@pierreglibert

@pierreglibert

This error was caused by did't passing https certs related verifications, you can bypass this error by using default https context, add the following code into "emsdk", and try the same command again.

import ssl
ssl._create_default_https_context = ssl._create_unverified_context

These two lines of code will globally disabling the verification of https certs, though it's not recommend to use, it did work.

This may also be related to #6275 , if so then using a newer python may fix it.

@Becavalier

Hi @Becavalier & @kripken :)
The solution of @Becavalier works.
Thanks ! 👍

@pierreglibert

@pierreglibert You're welcome, issue can be closed now.

@kripken

I just ran into this issue installing emsdk on a new Mac, even with Python 2.7.15 (the latest Python 2.7) pre-installed. I think there is a better solution than disabling certificate verification. Here is what worked for me:

Install Python 2.7.15 on Mac
Go to /Applications/Python 2.7 and run "Install Certificates.command"
Install emsdk following the normal steps at https://kripken.github.io/emscripten-site/docs/getting_started/downloads.html.

Step 2 is the key, and the reasoning behind it is explained in /Applications/Python 2.7/ReadMe.rtf, under section [CHANGED in 2.7.15]. Essentially this will "install a curated bundle of default root certificates".

@kripken If someone else can confirm this fixes emsdk installs on fresh Macs, perhaps it could be added to https://kripken.github.io/emscripten-site/docs/getting_started/downloads.html#mac-os-x.

@erik-larsen

Thanks @erik-larsen, yeah, would be good if others can confirm this, and then we should add it to those docs.

@erik-larsen

@erik-larsen Thank you so much for this, worked perfectly for me 🥇

I found an easy way on windows to solve this problem.

Install anaconda with its default python build
open anaconda prompt
execute emsdk install latest

The default python build in anaconda suite is of version 3.x

I just ran into this issue installing emsdk on a new Mac, even with Python 2.7.15 (the latest Python 2.7) pre-installed. I think there is a better solution than disabling certificate verification. Here is what worked for me:

Install Python 2.7.15 on Mac

Go to /Applications/Python 2.7 and run "Install Certificates.command"

Install emsdk following the normal steps at https://kripken.github.io/emscripten-site/docs/getting_started/downloads.html.

Step 2 is the key, and the reasoning behind it is explained in /Applications/Python 2.7/ReadMe.rtf, under section [CHANGED in 2.7.15]. Essentially this will "install a curated bundle of default root certificates".

I had also run the install with python ./emsdk install latest not just ./emsdk install latest as it seems to default to system provided python.

@pierreglibert

@pierreglibert

This error was caused by did't passing https certs related verifications, you can bypass this error by using default https context, add the following code into "emsdk", and try the same command again.
import ssl
ssl._create_default_https_context = ssl._create_unverified_context
These two lines of code will globally disabling the verification of https certs, though it's not recommend to use, it did work.

IT WORKS! THANKS!

@pierreglibert

@pierreglibert

This error was caused by did't passing https certs related verifications, you can bypass this error by using default https context, add the following code into "emsdk", and try the same command again.
import ssl
ssl._create_default_https_context = ssl._create_unverified_context
These two lines of code will globally disabling the verification of https certs, though it's not recommend to use, it did work.

you should put the code into emsdk.py

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./emsdk install latest : Installation failed #6723

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./emsdk install latest : Installation failed #6723

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Becavalier commented on Jun 20, 2018

kripken commented on Jun 20, 2018

pierreglibert commented on Jun 21, 2018

Becavalier commented on Jun 22, 2018

erik-larsen commented on Jul 20, 2018

kripken commented on Jul 21, 2018

weewam commented on Oct 3, 2018

AlohaWorld commented on Feb 23, 2019

hixus commented on Jun 23, 2019

StupidZhe commented on Jul 12, 2019

liushuaidi commented on Jan 6, 2021

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