commit ad2d49503b1242be501ab92832400ef344a6afae
from: Russ Cox <rsc@swtch.com>
date: Fri Nov 16 05:03:24 2018 UTC

INSTALL: set $NPROC on macOS

My MacBook Pro has hw.ncpu=12, so set NPROC=12.
Speeds up INSTALL dramatically.
Should probably add similar code to other OSes.

Also silence rio warning from earlier commit.

commit - 16d00819899260085ee10949012b07bf1c203db6
commit + ad2d49503b1242be501ab92832400ef344a6afae
blob - bfb7f657ca8e7d44bed6159962cb216c472b0532
blob + bfb0d5d7d7717382e82945fa074eb35ca0cb0f03
--- INSTALL
+++ INSTALL
@@ -104,6 +104,7 @@ if [ `uname` = SunOS ]; then
 fi
 
 if [ `uname` = Darwin ]; then
+	export NPROC=$(sysctl hw.ncpu | sed 's/hw.ncpu: //')
 	# On Darwin, uname -m -p cannot be trusted.
 	echo "* Running on Darwin: checking architecture..."
 	rm -f ./a.out
blob - 0d2f8721cf295504131ac7c1d7064e56deb5fe57
blob + 081ba0ef32d6676d8ed2aa6d521a12d46e883e91
--- dist/isum.awk
+++ dist/isum.awk
@@ -132,7 +132,7 @@ errors != 0 {
 	next
 }
 
-/(up to date|nothing to see|assuming it will be|loop not entered)/ {
+/(up to date|nothing to see|assuming it will be|loop not entered|# WSYSTYPE)/ {
 	next
 }