title: ValueError: path is on mount 'C:', start on mount 'D:' while building Qt project for WASM
body: <p>I have setup Qt community edition with WASM, installed enscripten sdk &amp; python.
  Tried to compile a simple Qt Widget project for WASM, but cannot get past this error.
  I know it's linked to relative path but I cannot get where to change the params to resolve the path to absolute.</p>
  <pre><code>Traceback (most recent call last):
    File &quot;D:\emsdk\upstream\emscripten\tools\wasm-sourcemap.py&quot;, line 352, in &lt;module&gt;
      sys.exit(main())
    File &quot;D:\emsdk\upstream\emscripten\tools\wasm-sourcemap.py&quot;, line 331, in main
      map = build_sourcemap(entries, code_section_offset, prefixes, options.sources, options.basepath)
    File &quot;D:\emsdk\upstream\emscripten\tools\wasm-sourcemap.py&quot;, line 282, in build_sourcemap
      file_name = os.path.relpath(os.path.abspath(file_name), base_path)
    File &quot;D:\Python\Python 3.10.2\lib\ntpath.py&quot;, line 718, in relpath
      raise ValueError(&quot;path is on mount %r, start on mount %r&quot; % (
  ValueError: path is on mount 'C:', start on mount 'D:'
  shared:ERROR: 'D:\Python\Python 3.10.2\python.exe D:\emsdk\upstream\emscripten\tools\wasm-sourcemap.py C:\Users\haris\AppData\Local\Temp\emscripten_temp_ivlat4fq\QtTestApplication.wasm --dwarfdump=D:/emsdk/upstream/bin\llvm-dwarfdump.exe -o C:\Users\haris\AppData\Local\Temp\emscripten_temp_ivlat4fq\QtTestApplication.wasm.map --basepath=D:\TestProjects\QtTestApplication' failed (1)
  mingw32-make: *** [Makefile:79: QtTestApplication.js] Error 1
  15:48:34: The process &quot;C:\Qt\Tools\mingw810_32\bin\mingw32-make.exe&quot; exited with code 2.
  Error while building/deploying project QtTestApplication (kit: Qt 5.15.2 WebAssembly)
  When executing step &quot;Make&quot;
  15:48:34: Elapsed time: 00:05.
  </code></pre>
  <p><a href="https://i.stack.imgur.com/e6luD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/e6luD.png" alt="Compile error snapshot" /></a></p>