--- Makefile.orig	2008-11-19 21:36:12.000000000 +0100
+++ Makefile	2008-11-24 01:21:22.000000000 +0100
@@ -20,15 +20,15 @@
 # $Id: Makefile 312 2008-06-15 18:09:42Z Joerg Mayer $
 
 DESTDIR=
-PREFIX=/usr/local
-ETCDIR=/etc/vpnc
+PREFIX?=/usr/local
+ETCDIR=$(PREFIX)/etc/
 BINDIR=$(PREFIX)/bin
 SBINDIR=$(PREFIX)/sbin
 MANDIR=$(PREFIX)/share/man
 DOCDIR=$(PREFIX)/share/doc/vpnc
 
 SRCS = sysdep.c vpnc-debug.c isakmp-pkt.c tunip.c config.c dh.c math_group.c supp.c decrypt-utils.c
-BINS = vpnc cisco-decrypt
+BINS += vpnc
 OBJS = $(addsuffix .o,$(basename $(SRCS)))
 BINOBJS = $(addsuffix .o,$(BINS))
 BINSRCS = $(addsuffix .c,$(BINS))
@@ -50,9 +50,7 @@
 #OPENSSL_GPL_VIOLATION = -DOPENSSL_GPL_VIOLATION
 #OPENSSLLIBS = -lcrypto
 
-CC=gcc
-CFLAGS ?= -O3 -g
-CFLAGS += -W -Wall -Wmissing-declarations -Wwrite-strings
+CC?=gcc
 CFLAGS +=  $(shell libgcrypt-config --cflags)
 CPPFLAGS += -DVERSION=\"$(VERSION)\" $(OPENSSL_GPL_VIOLATION)
 LDFLAGS ?= -g
@@ -78,7 +76,7 @@
 	sed -e 's,@''PREFIX''@,$(PREFIX),g' $< > $@ && chmod 755 $@
 
 cisco-decrypt : cisco-decrypt.o decrypt-utils.o
-	$(CC) -o $@ $^ $(LDFLAGS)
+	$(CC) $(CFLAGS) -o $@ $^ $(LDFLAGS)
 
 .depend: $(SRCS) $(BINSRCS)
 	$(CC) -MM $(SRCS) $(BINSRCS) $(CFLAGS) $(CPPFLAGS) > $@