Why does Emscripten not "find the file specified"? - windows

Question

As far as I can tell, I have installed all the dependencies with the Emscripten SDK but when I run the "Emscripten command prompt" I get the following output:
Adding directories to PATH:
PATH += C:\Program Files\Emscripten\spidermonkey\30.0.0_64bit
PATH += C:\Program Files\Emscripten\git\1.9.4\bin;C:\Program Files\Emscripten\gi
t\1.9.4\cmd
The system cannot find the file specified.
C:\Program Files\Emscripten>
Furthermore, when I try to compile a library, I get the following:
C:\Alice-master\deps\snappy-1.1.1>emconfigure configure
ERROR root: Exception thrown when invoking Popen in configure with args: "con
figure"!
Traceback (most recent call last):
File "C:\Program Files\Emscripten\emscripten\1.27.0\\emconfigure", line 24, in
shared.Building.configure(sys.argv[1:])
File "C:\Program Files\Emscripten\emscripten\1.27.0\tools\shared.py", line 108
4, in configure
process = Popen(args, stdout=stdout, stderr=stderr, env=env)
File "C:\Program Files\Emscripten\python\2.7.5.3_64bit\lib\subprocess.py", lin
e 711, in __init__
errread, errwrite)
File "C:\Program Files\Emscripten\python\2.7.5.3_64bit\lib\subprocess.py", lin
e 948, in _execute_child
startupinfo)
WindowsError: [Error 2] The system cannot find the file specified
I have tried it in different directories. If I try the other command that I read in the package's explanation, emconfigure ./configure
I get a similar exception that ends with WindowsError: [Error 193] %1 is not a valid Win32 application
Note: I even get this error when I execute the command in a directory without any spaces.