From e232388bdc10159e581db161e2940204230de765 Mon Sep 17 00:00:00 2001
From: ADAM David Alan Martin <adam@pyp-e.io>
Date: Fri, 2 Aug 2024 23:14:47 -0400
Subject: [PATCH] Permit tuning CPU usage in build from env var

---
 helpful-things/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/helpful-things/Makefile b/helpful-things/Makefile
index 4c2d661..fdff946 100644
--- a/helpful-things/Makefile
+++ b/helpful-things/Makefile
@@ -3,12 +3,13 @@
 
 # The makefile requires gnu make
 
+RESERVED_CPUS?=1
 ifneq ("$(wildcard /proc/cpuinfo)","")
 	processor_count=$(shell grep -c "^processor" /proc/cpuinfo)
 else # Assume FreeBSD for now...
 	processor_count=`sysctl -n kern.smp.cpus`
 endif
-count=$(shell expr $(processor_count) - 1 )
+count=$(shell expr $(processor_count) - $(RESERVED_CPUS) )
 
 __primary: test