Replace use of ${.CURDIR} by ${LIBC_SRCTOP} and define ${LIBC_SRCTOP}

if not already defined. This allows building libc from outside of
lib/libc using a reach-over makefile.

A typical use-case is to build a standard ILP32 version and a COMPAT32
version in a single iteration by building the COMPAT32 version using a
reach-over makefile.

Obtained from:	Juniper Networks, Inc.

7 files changed, 13 insertions, 13 deletions

diff --git a/lib/libc/db/Makefile.inc b/lib/libc/db/Makefile.inc
index bbfb7e7..a8905ef 100644
--- a/lib/libc/db/Makefile.inc
+++ b/lib/libc/db/Makefile.inc
@@ -3,11 +3,11 @@
 #
 CFLAGS+=-D__DBINTERFACE_PRIVATE
 
-.include "${.CURDIR}/db/btree/Makefile.inc"
-.include "${.CURDIR}/db/db/Makefile.inc"
-.include "${.CURDIR}/db/hash/Makefile.inc"
-.include "${.CURDIR}/db/man/Makefile.inc"
-.include "${.CURDIR}/db/mpool/Makefile.inc"
-.include "${.CURDIR}/db/recno/Makefile.inc"
+.include "${LIBC_SRCTOP}/db/btree/Makefile.inc"
+.include "${LIBC_SRCTOP}/db/db/Makefile.inc"
+.include "${LIBC_SRCTOP}/db/hash/Makefile.inc"
+.include "${LIBC_SRCTOP}/db/man/Makefile.inc"
+.include "${LIBC_SRCTOP}/db/mpool/Makefile.inc"
+.include "${LIBC_SRCTOP}/db/recno/Makefile.inc"
 
-SYM_MAPS+=${.CURDIR}/db/Symbol.map
+SYM_MAPS+=${LIBC_SRCTOP}/db/Symbol.map
diff --git a/lib/libc/db/btree/Makefile.inc b/lib/libc/db/btree/Makefile.inc
index 76c2238..b630573 100644
--- a/lib/libc/db/btree/Makefile.inc
+++ b/lib/libc/db/btree/Makefile.inc
@@ -1,7 +1,7 @@
 #	from @(#)Makefile.inc	8.2 (Berkeley) 7/14/94
 # $FreeBSD$
 
-.PATH: ${.CURDIR}/db/btree
+.PATH: ${LIBC_SRCTOP}/db/btree
 
 SRCS+=	bt_close.c bt_conv.c bt_debug.c bt_delete.c bt_get.c bt_open.c \
 	bt_overflow.c bt_page.c bt_put.c bt_search.c bt_seq.c bt_split.c \
diff --git a/lib/libc/db/db/Makefile.inc b/lib/libc/db/db/Makefile.inc
index 2bbac4e..8dcf9fe 100644
--- a/lib/libc/db/db/Makefile.inc
+++ b/lib/libc/db/db/Makefile.inc
@@ -1,6 +1,6 @@
 #       from @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
 # $FreeBSD$
 
-.PATH: ${.CURDIR}/db/db
+.PATH: ${LIBC_SRCTOP}/db/db
 
 SRCS+=	db.c
diff --git a/lib/libc/db/hash/Makefile.inc b/lib/libc/db/hash/Makefile.inc
index 2ecb817..e1be7a5 100644
--- a/lib/libc/db/hash/Makefile.inc
+++ b/lib/libc/db/hash/Makefile.inc
@@ -1,7 +1,7 @@
 #       from @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
 # $FreeBSD$
 
-.PATH: ${.CURDIR}/db/hash
+.PATH: ${LIBC_SRCTOP}/db/hash
 
 SRCS+=	hash.c hash_bigkey.c hash_buf.c hash_func.c hash_log2.c \
 	hash_page.c ndbm.c
diff --git a/lib/libc/db/man/Makefile.inc b/lib/libc/db/man/Makefile.inc
index 349b029..7c2db8b 100644
--- a/lib/libc/db/man/Makefile.inc
+++ b/lib/libc/db/man/Makefile.inc
@@ -1,7 +1,7 @@
 #       from @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
 # $FreeBSD$
 
-.PATH: ${.CURDIR}/db/man
+.PATH: ${LIBC_SRCTOP}/db/man
 
 MAN+=	btree.3 dbm.3 dbopen.3 hash.3 mpool.3 recno.3
 
diff --git a/lib/libc/db/mpool/Makefile.inc b/lib/libc/db/mpool/Makefile.inc
index 832e54d..bab7e6d 100644
--- a/lib/libc/db/mpool/Makefile.inc
+++ b/lib/libc/db/mpool/Makefile.inc
@@ -1,6 +1,6 @@
 #	from @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
 # $FreeBSD$
 
-.PATH: ${.CURDIR}/db/mpool
+.PATH: ${LIBC_SRCTOP}/db/mpool
 
 SRCS+=	mpool.c mpool-compat.c
diff --git a/lib/libc/db/recno/Makefile.inc b/lib/libc/db/recno/Makefile.inc
index 6e08e3f..744109f 100644
--- a/lib/libc/db/recno/Makefile.inc
+++ b/lib/libc/db/recno/Makefile.inc
@@ -1,7 +1,7 @@
 #       from @(#)Makefile.inc	8.1 (Berkeley) 6/4/93
 # $FreeBSD$
 
-.PATH: ${.CURDIR}/db/recno
+.PATH: ${LIBC_SRCTOP}/db/recno
 
 SRCS+=	rec_close.c rec_delete.c rec_get.c rec_open.c rec_put.c rec_search.c \
 	rec_seq.c rec_utils.c