Emscripten travis failure

[binji]

Not quite sure what's failing here, though maybe I'm doing something weird w/ --pre-js:

See this travis failure for example.

Assertion failed: could not find the assigment to "asmLibraryArg". perhaps 
--pre-js or --post-js code moved it out of the global scope? (things like that 
should be done after emcc runs, as they do not need to be run through the 
optimizer which is the special thing about --pre-js/--post-js code)

@kripken, any clues?

[kripken]

Reading that error message it does sound familiar. I believe the issue is that your pre and post js files put the output in a function scope. pre/post js files are added before optimization, and changing scope confuses the optimizer, which doesn't recognize the patterns it is looking for (and when optimizing it may do invalid things given the scope change compared to what it expects).

Adding a function scope like that doesn't need to be seen by the optimizer, so one solution is to prepend&append that code not using --pre/post js, but just manually, after emcc runs.

Another option is to use the MODULARIZE or MODULARIZE_INSTANCE options to put the output in a scope. That should also do the exporting I see you have at the end of the post.js.

[binji]

Ah, thanks, I see. The error message makes more sense now. I'll give that a shot!