Installing and using Emscripten

Question

I installed Emscripten through the steps shown below:

1.) Download the emsdk-portable version for Linux/MacOSX
http://kripken.github.io/emscripten-site/docs/getting_started/downloads.html#sdk-downloads
2.)
Run
$ ./emsdk update
$ ./emsdk install latest
$ ./emsdk activate latest
$ source emsdk_env.sh (To update your environment variables)

I believe everything installed correctly, however I am unable to run emscripten anywhere outside of the emsdk folder.

I need to be able to run em++ in my: Documents/project3/dataviz/graphiti folder.

Also, when I run em++ -v in my emsdk folder, I get the following message I have been unable to resolve:

Java does not seem to exist, requierd for closure compiler,
which is optional (define JAVA in /home/bryce/.emscripten if you want it) 

I attempted to define the java path in the folder, but I'm not sure how it should look.

Any help resolving these two issues would be very much appreciated.

Answer 1

The first problem sounds like the PATH isn't being set correctly. Type echo $PATH after running source emdsk_env.sh and check that the path to your emscripten installation has been added.

Note that you have to export the PATH for each terminal session you're using (it might be an idea to put source <path to emsdk dir>/emsdk_env.sh in your .bashrc file so this gets done automatically).

Could this link help with the second problem?

https://kripken.github.io/emscripten-site/docs/building_from_source/verify_emscripten_environment.html#installing-missing-components