--- a/Makefile	2024-10-30 10:45:37.791157442 +0000
+++ b/Makefile	2024-10-30 14:58:42.084973143 +0000
@@ -4,9 +4,7 @@
 
 ## Installation directory. By default, go in /usr/local.
 ## Distributions should probably use /, but they probably know better...
-ifndef PREFIX
-  PREFIX = /usr/local
-endif
+PREFIX ?= /usr
 
 ## Compiler to use (modify this for cross compile).
 CC = gcc
@@ -71,10 +69,10 @@
 DYNAMIC_LINK= libiw.so
 
 # Install directories
-INSTALL_DIR= $(PREFIX)/sbin/
-INSTALL_LIB= $(PREFIX)/lib/
-INSTALL_INC= $(PREFIX)/include/
-INSTALL_MAN= $(PREFIX)/man/
+INSTALL_DIR= $(DESTDIR)$(PREFIX)/bin/
+INSTALL_LIB= $(DESTDIR)$(PREFIX)/lib/
+INSTALL_INC= $(DESTDIR)$(PREFIX)/include/
+INSTALL_MAN= $(DESTDIR)$(PREFIX)/share/man/
 
 # Various commands
 RM = rm -f