./emsdk install latest : Installation failed

[pierreglibert]

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

[Becavalier]

@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.

[kripken]

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

[pierreglibert]

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

[Becavalier]

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

[erik-larsen]

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:

1. Install Python 2.7.15 on Mac
2. Go to /Applications/Python 2.7 and run "Install Certificates.command"
3. 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.

[kripken]

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

[weewam]

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

[AlohaWorld]

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

1. Install anaconda with its default python build
2. open anaconda prompt
3. execute emsdk install latest

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

[hixus]

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:

1. Install Python 2.7.15 on Mac
2. Go to /Applications/Python 2.7 and run "Install Certificates.command"
3. 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.

[StupidZhe]

@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!

Worked with python ./emsdk install latest.

[liushuaidi]

@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