1 files changed, 5 insertions, 0 deletions
diff --git a/setup.py b/setup.py
index c3cf2417bc..070ae9822b 100644
--- a/setup.py
+++ b/setup.py
@@ -84,10 +84,15 @@ CYGWIN = (HOST_PLATFORM == 'cygwin')
 MACOS = (HOST_PLATFORM == 'darwin')
 AIX = (HOST_PLATFORM.startswith('aix'))
 VXWORKS = ('vxworks' in HOST_PLATFORM)
+EMSCRIPTEN = HOST_PLATFORM == 'emscripten-wasm32'
 CC = os.environ.get("CC")
 if not CC:
     CC = sysconfig.get_config_var("CC")
 
+if EMSCRIPTEN:
+    # emcc is a Python script from a different Python interpreter.
+    os.environ.pop("PYTHONPATH", None)
+
 
 SUMMARY = """
 Python is an interpreted, interactive, object-oriented programming