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Subject: Re: [vdr] Build failures on Ubuntu - gettid related
From: Ville =?ISO-8859-1?Q?Skytt=E4?= <ville.skytta@iki.fi>
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Date: Fri, 18 Aug 2006 12:15:49 +0300
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On Tue, 2006-08-15 at 14:52 +0200, Jens Auer wrote:

> The gettid function is not defined in any header, if it interpret the
> source correctly. The _syscall0-macro expands to a function definition
> pid_t gettid(void).

_syscallX are not available for userspace in recent kernel headers
(since April), this causes VDR compilation failures also with the
current Fedora Core 6 test versions.  More info:
http://tinyurl.com/qaydh , http://lkml.org/lkml/2006/6/4/128

The attached patch appears to work for me, and from a bit of Googling I
get the impression that it should probably work with all kernel header
sets since 2.4.20.

--- thread.c~	2006-06-02 16:51:39.000000000 +0300
+++ thread.c	2006-08-18 01:26:24.000000000 +0300
@@ -318,7 +318,5 @@
 
-_syscall0(pid_t, gettid)
-
 tThreadId cThread::ThreadId(void)
 {
-  return gettid();
+  return syscall(__NR_gettid);
 }