---
 Makefile |   18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

Index: 0.5/Makefile
===================================================================
--- 0.5.orig/Makefile
+++ 0.5/Makefile
@@ -25,17 +25,18 @@ DISTFILES = LICENSE README README.pngcom
 
 # Installation options
 # Change these to suit your system's requirements
-BINDIR=/usr/bin
-MANDIR=/usr/share/man/man1
-DOCDIR=/usr/share/doc/pngnq
+BINDIR=$(DESTDIR)/usr/bin
+MANDIR=$(DESTDIR)/usr/share/man/man1
+DOCDIR=$(DESTDIR)/usr/share/doc/pngnq
 
 # Build options
 PNGINC = ${shell libpng-config --cflags}
 PNGLIB = ${shell libpng-config --ldflags}
 
-CFLAGS = -O3 -g -Wall -pedantic -I. -D VERSION=\"$(VERSION)\" $(PNGINC) -funroll-loops -fomit-frame-pointer 
+CFLAGS ?= -O3 -g -Wall -pedantic -funroll-loops -fomit-frame-pointer
+CFLAGS += -I. -D VERSION=\"$(VERSION)\" $(PNGINC)
 
-LDFLAGS = $(PNGLIB)
+LDFLAGS = $(PNGLIB) -lz -lm
 
 OBJS = pngnq.o rwpng.o neuquant32.o freegetopt/getopt.o
 #############################################
@@ -72,7 +73,12 @@ bindist: all
 
 # Install
 install: all
+	install -d ${BINDIR}
 	install -t ${BINDIR} pngnq pngcomp
-	install -t ${MANDIR} pngnq.1 
+	install -d ${MANDIR}
+	install -m 0644 -t ${MANDIR} pngnq.1
+
+install-doc:
 	install -d ${DOCDIR} 
 	install -t ${DOCDIR} README LICENSE README.pngcomp 
+