Emscripten: ./emsdk install latest : Installation failed

Created on 19 Jun 2018 · 12Comments · Source: emscripten-core/emscripten

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

Source

pierreglibert

Most helpful comment

@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.

Becavalier on 20 Jun 2018

👍26 🎉6 ❤3 🚀1

All 12 comments

@pierreglibert

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.

Becavalier on 20 Jun 2018

👍26 🎉6 ❤3 🚀1

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

kripken on 20 Jun 2018

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

pierreglibert on 21 Jun 2018

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

Becavalier on 22 Jun 2018

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 on 20 Jul 2018

👍15 ❤4 🚀2

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

kripken on 22 Jul 2018

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

weewam on 3 Oct 2018

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

AlohaWorld on 23 Feb 2019

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.

hixus on 23 Jun 2019

@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!

StupidZhe on 12 Jul 2019

👍1

Worked with python ./emsdk install latest.

briancullinan on 2 Aug 2019

👎1

@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