commit fe92b4a0b1a8268238bce088cd081da9b802b465
from: Russ Cox <rsc@swtch.com>
date: Fri Nov 16 01:39:35 2018 UTC

INSTALL: set CC9 on macOS to use xcrun clang

Using plain 'clang' does not work well for the new devdraw on macOS 10.14.
But 'xcrun --sdk macosx clang' does work, for reasons no one understands.
Hopefully this will be OK on all macOS systems.

commit - 7d43dde539378fb5730df6ce961f7916f495746e
commit + fe92b4a0b1a8268238bce088cd081da9b802b465
blob - 282f900c973c3cc91ca9e3eeef9701d49a51c561
blob + bfb7f657ca8e7d44bed6159962cb216c472b0532
--- INSTALL
+++ INSTALL
@@ -116,6 +116,7 @@ if [ `uname` = Darwin ]; then
 	*x86_64*)
 		echo "	x86-64 found."
 		echo "OBJTYPE=x86_64" >>$PLAN9/config
+		echo "CC9='xcrun --sdk macosx clang'" >>$PLAN9/config
 		;;
 	*i386*)
 		echo "	i386 found."