build: fix configure script to work with Apple Clang 11

saagarjha · BridgeAR · commit d3207912fb57 · 2019-06-17T21:12:23.000+02:00
PR-URL: #28071 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Richard Lau <riclau@uk.ibm.com> Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com>
diff --git a/configure.py b/configure.py
@@ -710,7 +710,7 @@ def get_llvm_version(cc):
 
 def get_xcode_version(cc):
   return get_version_helper(
-    cc, r"(^Apple LLVM version) ([0-9]+\.[0-9]+)")
+    cc, r"(^Apple (?:clang|LLVM) version) ([0-9]+\.[0-9]+)")
 
 def get_gas_version(cc):
   try:
