Error with pip macos catalina

[hong4rc]

I try with pip same as readme and get result(Python 3.8.2):

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/machine/types.h:37:2: error: architecture not supported
#error architecture not supported
 ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
error: command 'xcrun' failed with exit status 1