From b04c42e9eb74c0206a0e21abbf8eb061f8eecea6 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Mon, 17 Jan 2005 21:32:55 +0000
Subject: nptl dependencies

---
 man/man1/install.1 | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'man')

diff --git a/man/man1/install.1 b/man/man1/install.1
index e070ffba..8a3155e7 100644
--- a/man/man1/install.1
+++ b/man/man1/install.1
@@ -40,7 +40,17 @@ can safely be repeated to rebuild the system from scratch.
 The system uses different threading implementations on Linux 2.6 and
 later kernels than on 2.4 and earlier;
 and on FreeBSD 5 and later kernels than on FreeBSD 4 and earlier.
-Running binaries from one class on another may not work.
+Running binaries from one class on another will not work.
+.PP
+Some Linux 2.6 systems (e.g., Gentoo) do not use the new NPTL pthread library
+even though the kernel supports them.  On these systems, plan9port must 
+fall back on the threading code intended for Linux 2.4.  To accomplish this,
+.I INSTALL
+checks whether the running system uses NPTL and sets
+.B SYSVERSION
+in
+.B \*9/config
+accordingly.
 .SH FILES
 .TP
 .B \*9/lib/moveplan9.files
-- 
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