From ad2d49503b1242be501ab92832400ef344a6afae Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@swtch.com>
Date: Fri, 16 Nov 2018 00:01:10 -0500
Subject: 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.
---
 INSTALL       | 1 +
 dist/isum.awk | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/INSTALL b/INSTALL
index bfb7f657..bfb0d5d7 100755
--- a/INSTALL
+++ b/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
diff --git a/dist/isum.awk b/dist/isum.awk
index 0d2f8721..081ba0ef 100644
--- a/dist/isum.awk
+++ b/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
 }
 
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