AssertionError: asm.js requires -O1 or above

Question

i just started asm.js and stuck at one point. i installed emscripten,clang and node js already and my c program also running fine with emscripten with this command :

./emcc hello_world.c

./emcc hello_world.c -o hello_world.html

but when i am trying to run this file with asm it shows me an insertion error with this command :

./emcc -01 -s ASM_JS=1 hello_world.c

Traceback (most recent call last):
File "./emcc", line 1219, in <module>
assert opt_level >= 1 or fastcomp, 'asm.js requires -O1 or above
AssertionError: asm.js requires -O1 or above

So how to solve this error ?

,Thanks in advance

Answer 1

Should be fine when doing

./emcc -02 -s ASM_JS=1 hello_world.c