Add/use MTREE_FOLLOWS_SYMLINKS make.conf option

This is part of whole subsystem fixing

Reviewed by:	imp

etc/Makefile

@@ -148,12 +148,12 @@ distribution:
 .endif
 
 distrib-dirs:
-	mtree -deU -f ${.CURDIR}/mtree/BSD.root.dist -p ${DESTDIR}/
-	mtree -deU -f ${.CURDIR}/mtree/BSD.var.dist -p ${DESTDIR}/var
-	mtree -deU -f ${.CURDIR}/mtree/BSD.usr.dist -p ${DESTDIR}/usr
-	mtree -deU -f ${.CURDIR}/mtree/BSD.include.dist \
+	mtree -deU ${MTREE_FOLLOWS_SYMLINKS} -f ${.CURDIR}/mtree/BSD.root.dist -p ${DESTDIR}/
+	mtree -deU ${MTREE_FOLLOWS_SYMLINKS} -f ${.CURDIR}/mtree/BSD.var.dist -p ${DESTDIR}/var
+	mtree -deU ${MTREE_FOLLOWS_SYMLINKS} -f ${.CURDIR}/mtree/BSD.usr.dist -p ${DESTDIR}/usr
+	mtree -deU ${MTREE_FOLLOWS_SYMLINKS} -f ${.CURDIR}/mtree/BSD.include.dist \
 		-p ${DESTDIR}/usr/include
-	mtree -deU -f ${.CURDIR}/mtree/BSD.include.dist \
+	mtree -deU ${MTREE_FOLLOWS_SYMLINKS} -f ${.CURDIR}/mtree/BSD.include.dist \
 		-p ${DESTDIR}/usr/libdata/perl/5.6.0/mach
 	cd ${DESTDIR}/; rm -f ${DESTDIR}/sys; ln -s usr/src/sys sys
 	cd ${DESTDIR}/usr/share/locale; \

etc/defaults/make.conf

@@ -43,6 +43,9 @@ BDECFLAGS=	-W -Wall -ansi -pedantic -Wbad-function-cast -Wcast-align \
 # Compare before install
 #INSTALL=install -C
 #
+# Mtree will follow symlinks
+MTREE_FOLLOWS_SYMLINKS= -L
+#
 # To enable building enstalling suidperl with the setuid bit turned on
 #ENABLE_SUIDPERL=	true
 #

share/examples/etc/make.conf

@@ -43,6 +43,9 @@ BDECFLAGS=	-W -Wall -ansi -pedantic -Wbad-function-cast -Wcast-align \
 # Compare before install
 #INSTALL=install -C
 #
+# Mtree will follow symlinks
+MTREE_FOLLOWS_SYMLINKS= -L
+#
 # To enable building enstalling suidperl with the setuid bit turned on
 #ENABLE_SUIDPERL=	true
 #