From 008f8348fcd1cf0da55bbb9f1403da0c36f6004e Mon Sep 17 00:00:00 2001
From: Diomidis Spinellis <dds@aueb.gr>
Date: Fri, 7 Apr 2023 16:10:48 +0300
Subject: [PATCH] Allow the specification of the installation prefix

This makes it possible to install pigpio over the distributed
version by running make prefix=/usr.
---
 Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 0aa14fe..40a035c 100644
--- a/Makefile
+++ b/Makefile
@@ -33,7 +33,8 @@ LL2      = -L. -lpigpiod_if -pthread -lrt
 
 LL3      = -L. -lpigpiod_if2 -pthread -lrt
 
-prefix = /usr/local
+# Set prefix=/usr to overwrite distributed version
+prefix ?= /usr/local
 exec_prefix = $(prefix)
 bindir = $(exec_prefix)/bin
 includedir = $(prefix)/include