Do not install pf related man pages if WITHOUT_PF is set.

PR:		bin/171767
Submitted by:	zeising
Approved by:	joel (mentor), glebius

share/man/man4/Makefile

@@ -1,6 +1,8 @@
 #	@(#)Makefile	8.1 (Berkeley) 6/18/93
 # $FreeBSD$
 
+.include <bsd.own.mk>
+
 MAN=	aac.4 \
 	acpi.4 \
 	${_acpi_asus.4} \
@@ -354,9 +356,9 @@ MAN=	aac.4 \
 	pcii.4 \
 	pcm.4 \
 	pcn.4 \
-	pf.4 \
-	pflog.4 \
-	pfsync.4 \
+	${_pf.4} \
+	${_pflog.4} \
+	${_pfsync.4} \
 	pim.4 \
 	polling.4 \
 	ppbus.4 \
@@ -798,4 +800,10 @@ _nvram2env.4=	nvram2env.4
 SUBDIR=	man4.${MACHINE_CPUARCH}
 .endif
 
+.if ${MK_PF} != "no"
+_pf.4=		pf.4
+_pflog.4=	pflog.4
+_pfsync.4=	pfsync.4
+.endif
+
 .include <bsd.prog.mk>

share/man/man5/Makefile

@@ -50,8 +50,6 @@ MAN=	acct.5 \
 	passwd.5 \
 	pbm.5 \
 	periodic.conf.5 \
-	pf.conf.5 \
-	pf.os.5 \
 	phones.5 \
 	portindex.5 \
 	portsnap.conf.5 \
@@ -91,6 +89,11 @@ MAN+=	hesiod.conf.5
 MAN+=	nandfs.5
 .endif
 
+.if ${MK_PF} != "no"
+MAN+=	pf.conf.5 \
+	pf.os.5
+.endif
+
 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 _boot.config.5=	boot.config.5
 .endif