[src/trunk]: src/lib/libpthread Explain what PTHREAD__COMPAT is for. This co...

[apb <apb%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/479793baf7d3
branches:  trunk
changeset: 785135:479793baf7d3
user:      apb <apb%NetBSD.org@localhost>
date:      Mon Feb 25 17:04:46 2013 +0000

description:
Explain what PTHREAD__COMPAT is for.  This comment in
src/libpthread/Makefile is adated from a comment in
src/doc/CHANGES.prev.

diffstat:

 lib/libpthread/Makefile |  7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)

diffs (21 lines):

diff -r 0b95f6d05048 -r 479793baf7d3 lib/libpthread/Makefile
--- a/lib/libpthread/Makefile   Mon Feb 25 16:52:57 2013 +0000
+++ b/lib/libpthread/Makefile   Mon Feb 25 17:04:46 2013 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile,v 1.78 2013/01/31 20:57:58 riastradh Exp $
+#      $NetBSD: Makefile,v 1.79 2013/02/25 17:04:46 apb Exp $
 #
 
 WARNS?=        5
@@ -60,6 +60,11 @@
 SRCS+= pthread_md.S
 .endif
 
+# The PTHREAD__COMPAT flag builds a libpthread that can be dropped
+# into a NetBSD 2/3/4 chroot with a NetBSD 5 or later kernel.
+# This makes threading work in the chroot, no other modifications
+# required.
+#
 .if defined(PTHREAD__COMPAT)
 SRCS+=         pthread_compat.c
 .PATH.c:       ${.CURDIR}/../../common/lib/libc/arch/${ARCHSUBDIR}/atomic