From c5f4268c9955f08894fec78c1eeacf78f55256c4 Mon Sep 17 00:00:00 2001
From: David Lechner <david@pybricks.com>
Date: Wed, 12 Feb 2020 17:13:39 -0600
Subject: [PATCH] unix/variants/standard: Fix role of PREFIX when used to
 install.

Currently it is not possible to override PREFIX when installing micropython
using the makefile.  It is common practice to be able to run something like
this:

    $ make install PREFIX=/usr DESTDIR=/tmp/staging

This fixes such usage.
---
 ports/unix/variants/standard/mpconfigvariant.mk | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ports/unix/variants/standard/mpconfigvariant.mk b/ports/unix/variants/standard/mpconfigvariant.mk
index 28fad7be77..6650c086f8 100644
--- a/ports/unix/variants/standard/mpconfigvariant.mk
+++ b/ports/unix/variants/standard/mpconfigvariant.mk
@@ -4,8 +4,8 @@ PROG ?= micropython
 
 # install micropython in /usr/local/bin
 TARGET = micropython
-PREFIX = $(DESTDIR)/usr/local
-BINDIR = $(PREFIX)/bin
+PREFIX = /usr/local
+BINDIR = $(DESTDIR)$(PREFIX)/bin
 
 install: micropython
 	install -d $(BINDIR)