--- Makefile.orig	2015-08-18 14:59:39.000000000 -0400
+++ Makefile	2015-08-18 14:59:55.000000000 -0400
@@ -1,16 +1,17 @@
-DESTDIR=/usr/local
-BINDIR=$(DESTDIR)/bin
-DOCDIR=$(DESTDIR)/share/doc
-MANDIR=$(DESTDIR)/share/man
+DESTDIR=@@PREFIX@@
+BINDIR=@@PREFIX@@/bin
+DOCDIR=@@PREFIX@@/share/doc
+MANDIR=@@PREFIX@@/share/man
 
 VERSION=$(shell cat VERSION)
 RELEASE=$(shell sed -n 's/^Release: *\([0-9]*\)/\1/p' mkhexgrid.spec)
 DISTDIR=mkhexgrid-$(VERSION)
 RPMDIR=/home/uckelman/rpmbuild
 
-CC=g++
-CPPFLAGS=-c -g -O2 -W -Wall -DVERSION='"$(VERSION)"'
-LDFLAGS=-lm -lstdc++ -lgd
+CC=@@CC@@
+CXX=@@CC@@
+CPPFLAGS=-c -g -O2 -W -Wall -DVERSION='"$(VERSION)"' @@CPPFLAGS@@
+LDFLAGS=-lm -lstdc++ -lgd @@LDFLAGS@@
 
 FILES=grid.h \
       grid.cpp \