--- Makefile.orig	2019-02-27 06:19:06 UTC
+++ Makefile
@@ -1,16 +1,16 @@
 # Install Configuration
 
 # Your C compiler
-CC=gcc
+CC?=gcc
 #CC=clang
 
 # Compiler options
-CFLAGS = -g -O0 -Wall
+CFLAGS ?= -g -O0 -Wall
 
 # Normally minipro is installed to /usr/local.  If you want to put it
 # somewhere else, define that location here.
 PREFIX ?= /usr/local
-MANDIR ?= $(PREFIX)/share/man
+MANDIR ?= $(PREFIX)/man
 
 # Some older releases of MacOS need some extra library flags.
 #EXTRA_LIBS += "-framework Foundation -framework IOKit"
@@ -58,7 +58,7 @@ OBJCOPY=objcopy
 
 DIST_DIR = $(MINIPRO)-$(VERSION)
 BIN_INSTDIR=$(DESTDIR)$(PREFIX)/bin
-MAN_INSTDIR=$(DESTDIR)$(PREFIX)/share/man/man1
+MAN_INSTDIR=$(DESTDIR)$(PREFIX)/man/man1
 
 UDEV_DIR=$(shell $(PKG_CONFIG) --define-variable=prefix=$(PREFIX) --silence-errors --variable=udevdir udev)
 UDEV_RULES_INSTDIR=$(DESTDIR)$(UDEV_DIR)/rules.d