Obey RPM_OPT_FLAGS, link with pppd with libutil to get logwtmp(), and enable
PAM support.
--- ppp-2.4.2/chat/Makefile.linux	2004-01-12 22:57:55.000000000 -0500
+++ ppp-2.4.2/chat/Makefile.linux	2004-03-10 18:32:39.000000000 -0500
@@ -6,7 +6,7 @@
 CDEF4=	-DFNDELAY=O_NDELAY		# Old name value
 CDEFS=	$(CDEF1) $(CDEF2) $(CDEF3) $(CDEF4)
 
-COPTS=	-O2 -g -pipe $(CDEFS)
+COPTS=	$(RPM_OPT_FLAGS) $(CDEFS)
 CFLAGS=	$(COPTS) $(CDEFS)
 
 INSTALL= install
--- ppp-2.4.2/pppd/Makefile.linux	2003-11-27 16:55:19.000000000 -0500
+++ ppp-2.4.2/pppd/Makefile.linux	2004-03-10 18:32:46.000000000 -0500
@@ -29,10 +29,10 @@
 include .depend
 endif
 
-# CC = gcc
+CC = gcc
 #
-COPTS = -O2 -pipe -Wall -g
-LIBS =
+COPTS = -Wall $(RPM_OPT_FLAGS)
+LIBS = -lutil
 
 # Uncomment the next 2 lines to include support for Microsoft's
 # MS-CHAP authentication protocol.  Also, edit plugins/radius/Makefile.linux.
@@ -60,7 +60,7 @@
 USE_TDB=y
 
 HAS_SHADOW=y
-#USE_PAM=y
+USE_PAM=y
-#HAVE_INET6=y
+HAVE_INET6=y
 
 # Enable plugins
--- ppp-2.4.2/pppdump/Makefile.linux	1999-07-26 07:09:29.000000000 -0400
+++ ppp-2.4.2/pppdump/Makefile.linux	2004-03-10 18:32:47.000000000 -0500
@@ -1,4 +1,4 @@
-CFLAGS= -O -I../include/net
+CFLAGS= $(RPM_OPT_FLAGS) -I../include/net
 OBJS = pppdump.o bsd-comp.o deflate.o zlib.o
 
 INSTALL= install
--- ppp-2.4.2/pppstats/Makefile.linux	2002-11-09 06:24:43.000000000 -0500
+++ ppp-2.4.2/pppstats/Makefile.linux	2004-03-10 18:32:55.000000000 -0500
@@ -7,7 +7,7 @@
 PPPSTATOBJS = pppstats.o
 
 #CC = gcc
-COPTS = -O
+COPTS = $(RPM_OPT_FLAGS)
 COMPILE_FLAGS = -I../include
 LIBS =
 
--- ppp-2.4.2/pppd/plugins/Makefile.linux	2004-01-12 22:56:24.000000000 -0500
+++ ppp-2.4.2/pppd/plugins/Makefile.linux	2004-03-10 18:41:20.000000000 -0500
@@ -1,5 +1,5 @@
 CC	= gcc
-COPTS	= -O2 -g
+COPTS	= $(RPM_OPT_FLAGS)
 CFLAGS	= $(COPTS) -I.. -I../../include -fPIC
 LDFLAGS	= -shared
 INSTALL	= install -o root
--- ppp-2.4.2/pppd/plugins/radius/Makefile.linux	2004-03-10 18:46:36.000000000 -0500
+++ ppp-2.4.2/pppd/plugins/radius/Makefile.linux	2004-03-10 18:46:44.000000000 -0500
@@ -5,7 +5,7 @@
 
 MANDIR=/usr/man
 PLUGIN=radius.so radattr.so radrealms.so
-CFLAGS=-I../.. -I../../../include -Iradiusclient/include -O2
+CFLAGS=-I../.. -I../../../include -Iradiusclient/include $(RPM_OPT_FLAGS)
 
 # Uncomment the next line to include support for Microsoft's
 # MS-CHAP authentication protocol.
--- ppp-2.4.2/pppd/plugins/rp-pppoe/Makefile.linux	2004-03-10 18:46:52.000000000 -0500
+++ ppp-2.4.2/pppd/plugins/rp-pppoe/Makefile.linux	2004-03-10 18:46:58.000000000 -0500
@@ -16,7 +16,7 @@
 # Version is set ONLY IN THE MAKEFILE!  Don't delete this!
 VERSION=3.3
 
-COPTS=-O2 -g
+COPTS=$(RPM_OPT_FLAGS)
 CFLAGS=$(COPTS) -I../../../include/linux
 all: rp-pppoe.so