LinuxThreads library.

1998-03-11 00:42  Wolfram Gloger  <wmglo@dent.med.uni-muenchen.de>
	* linuxthreads/manager.c: Enable resetting of the thread
	scheduling policy to SCHED_OTHER when the parent thread
	has a different one.
1998-02-01 13:51  Ulrich Drepper  <drepper@cygnus.com>
	* sysdeps/unix/sysv/linux/bits/posix_opt.h: Define
	_POSIX_ASYNCHRONOUS_IO.
	* sysdeps/pthread/pthread.h: Define bits for Unix98 variants of
	mutexes.
	* mutex.c: Implement new mutex types.
	* internals.h: Include <signal.h>.
	* libpthread.map: Add __erno_location and __h_errno_location.
	* errno.c: Return pointer to variable actually in use.  This might
	not be the one in the thread structure.
	* internals.h (struct _pthread_descr_struct): Add new fields p_errnop
	and p_h_errnop.
	* manager.c (__pthread_manager): Set p_errnop and p_h_errnop member
	of manager thread structure.
	(pthread_handle_create): Set p_errnop and p_h_errnop members for new
	thread.
	* pthread.c: Adapt initializer for thread structures.
	(__pthread_initial_thread): Set p_errnop and p_h_errnop member.
	(__pthread_reset_main_thread): Reset p_errnop and p_h_errnop of
	current thread to global variables.
1998-01-31 17:27  Ulrich Drepper  <drepper@cygnus.com>
	* rwlock.c: New file.
	* Makefile (libpthread-routines): Add rwlock.
	* sysdeps/pthread/pthread.h: Define data structures and declare
	functions.
	* libpthread.map: Add new functions.
1997-12-18 13:50  Philip Blundell  <pb@nexus.co.uk>
	* sysdeps/arm/pt-machine.h: New file; add ARM support.
	* sysdeps/arm/Implies: likewise.
	* README: Document it.
1997-12-13  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
	* signals.c: Remove unneeded initializer for sigwaited, saving a
1997-04-11 01:18  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
	* semaphore.c (sem_init): Set sem_spinlock only if available.
1997-12-04 01:48  Ulrich Drepper  <drepper@cygnus.com>
	* mutex.c: Implement PTHREAD_MUTEX_CHECKERROR.
	* sysdeps/pthread/pthread.h: Define PTHREAD_MUTEX_CHECKERROR.
	* Makefile: Update from LinuxThreads 0.7.
	* internals.h. Likewise.
	* manager.c: Likewise.
	* mutex.c: Likewise.
	* pthread.c: Likewise.
	* signals.c: Likewise.
	* specific.c: Likewise.
	* Examples/ex3.c: Likewise.
1997-11-20 18:13  Ulrich Drepper  <drepper@cygnus.com>
	* pthread.c (__pthread_reset_main_thread): Close pipe only if still
	open.
1997-10-29 05:38  Ulrich Drepper  <drepper@cygnus.com>

	* wrapsyscall.c: Add socket functions which are also cancelation
	points.

1997-10-19 21:40  Wolfram Gloger  <wg@wolfram.dent.med.uni-muenchen.de>

	* specific.c (__libc_internal_tsd_set, __libc_internal_tsd_get):
	New functions for fast thread specific data within libc.

	* internals.h: Add new array p_libc_specific to struct
	_pthread_descr_struct.

	* sysdeps/pthread/bits/libc-lock.h: Declare new functions.

1997-10-13 05:39  Ulrich Drepper  <drepper@cygnus.com>

	* semaphore.h: Add __BEGIN_DECLS/__END_DECLS.
	Reported by Ralf Corsepius <corsepiu@faw.uni-ulm.de>.

1997-08-29 03:05  Ulrich Drepper  <drepper@cygnus.com>

	* internals.h (struct _pthread_descr_struct): Add definitions for
	two-level specific key handling.
	* manager.c (pthread_handle_create): Initialize specific memory array.
	* specific.c: Implement two-level key handling.
	* weaks.c: Don't provide dummy key handling.
	* sysdeps/pthread/bits/libc-lock.h: Typedef __libc_lock_t (no #define).
	Add definition of __libc_key_t.
	* sysdeps/unix/sysv/linux/bits/local_lim.h: Define PTHREAD_KEYS_MAX
	as 1024.
	Add definition of _POSIX_THREAD_DESTRUCTOR_ITERATIONS and
	PTHREAD_DESTRUCTOR_ITERATIONS.

	* manager.c (pthread_handle_create): Compare mmap result with
	MAP_FAILED.

	* ptfork.c: Rename to __pthread_atfork and make old name a weak alias.
	* sysdeps/pthread/bits/pthread.h: Add prototype for __pthread_atfork.

1997-08-22 19:04  Richard Henderson  <rth@cygnus.com>

	sysdeps/sparc -> sysdeps/sparc/sparc32
	sysdeps/sparc64 -> sysdeps/sparc/sparc64

	* internals.h: Change definition of THREAD_SELF to be an expression,
	not a statement that did a return.
	* sysdeps/alpha/pt-machine.h (THREAD_SELF): Update accordingly.
	* sysdeps/sparc/sparc32/pt-machine.h (THREAD_SELF, INIT_THREAD_SELF):
	Follow Solaris and use a "system reserved" register (%g6) to hold
	the thread descriptor.
	* sysdeps/sparc/sparc64/pt-machine.h: Likewise.

1997-08-03 00:09  Ulrich Drepper  <drepper@cygnus.com>

	* mutex.c: Correct pthread_once.  Patch by Xavier Leroy.
	* sysdeps/pthread/pthread.h: Add prototype for __pthread_once.
	* sysdeps/pthread/bits/pthread.h: Add macros for __libc_once.

	* semaphore.c: Include spinlock.h only when needed.

	* specific.c (__pthread_setsepcific, __pthread_getspecific): Reject
	keys for entries not in use.

	* weaks.c: Implement key handling functions for real.

1997-06-29  01:04  Richard Henderson  <richard@gnu.ai.mit.edu>

	Initial sparc64-linux support:
	* linuxthreads/sysdeps/sparc64/Implies: New file.
	* linuxthreads/sysdeps/sparc64/pt-machine.h: Likewise.

1997-06-29 00:48  Ulrich Drepper  <drepper@cygnus.com>

	* semaphore.c: Include spinlock.h at correct place.
	Patch by HJ Lu.

1997-06-13 10:06  Richard Henderson  <rth@tamu.edu>

	The Great Bit File Move:
	* sysdeps/alpha/semaphorebits.h: -> .../bits/semaphore.h.
	* sysdeps/powerpc/semaphorebits.h: Likewise.
	* sysdeps/pthread/cmpxchg/semaphorebits.h: Likewise.
	* sysdeps/pthread/no-cmpxchg/semaphorebits.h: Likewise.
	* sysdeps/pthread/libc-lock.h: -> bits/
	* sysdeps/pthread/stdio-lock.h: Likewise.
	* sysdeps/unix/sysv/linux/local_lim.h: Likewise.
	* sysdeps/unix/sysv/linux/posix_opt.h: Likewise.
	* semaphore.h: Likewise.
	* sysdeps/pthread/pthread.h: Likewise.

	* lockfile.c: <foo.h> -> <bits/foo.h>.
	* semaphore.h: Likewise.

	* Makefile: (headers): foo.h -> bits/foo.h.
	* sysdeps/pthread/Makefile: Likewise.

1997-04-11 01:18  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* semaphore.c (sem_init): Set sem_spinlock only if available.

	* sysdeps/m68k/pt-machine.h (testandset, __compare_and_swap): Fix
	asm constraints.

1997-04-09 03:00  Ulrich Drepper  <drepper@cygnus.com>

	Update from LinuxThreads 0.6.

	* attr.c (pthread_attr_getdetachstate): Use __sched_get_priority_max
	and __sched_get_priority_min instead of names without `__'.

	* manager.c: Rewrite large parts to implement opaque pthread_t.

	* cancel.c: Adapt for opaque pthread_t type.
	* condvar.c: Likewise.
	* errno.c: Likewise.
	* join.c: Likewise.
	* mutex.c: Likewise.
	* pthread.c: Likewise.
	* signals.c: Likewise.
	* specific.c: Likewise.
	* restart.h: Likewise.
	* queue.h: Likewise.
	* Examples/ex3.c: Likewise.
	* Examples/ex4.c: Likewise.
	* sysdeps/pthread/pthread.h: Likewise.

	* pthread.c: Accumulate time for all threads in thread manager.

	* semaphore.c: Implement fallback implementation for architectures
	sometimes missing compare-exchange operations.

	* cancel.c (pthread_cancel): Validate handle argument.
	* join.c (pthread_join): Likewise.
	(pthread_detach): Likewise.
	* signals.c (pthread_kill): Likewise.

	* spinlock.h (acquire): Use __sched_yield not sched_yield.

	* queue.h (enqueue): Enqueue thread according to priority.

	* internals.c (struct pthread_start_args): New struct for passing
	args to cloning function.
	(struct _pthread): Rename to _pthread_descr_struct and adapt for
	opaque pthread_t.

	* Examples/Makefile (clean): Pass -f option to rm.

	* sysdeps/i386/pt-machine.h: Add check for compare-exchange instruction
	and define TEST_FOR_COMPARE_AND_SWAP.
	* sysdeps/i386/i486/pt-machine.h: Removed.

	* sysdeps/unix/sysv/linux/local_lim.h (PTHREAD_THREADS_MAX): Increase
	to 1024.

1997-04-04 16:38  Ulrich Drepper  <drepper@cygnus.com>

	* restart.h (suspend): Clear p_signal before suspending.
	(suspend_with_cancellation): Likewise.
	Patch by Xavier Leroy <Xavier.Leroy@inria.fr>.

	* weaks.c: Make __pthread_key_create return 1.
	* sysdeps/pthread/libc-lock.h: Define __libc_key_create,
	__libc_getspecific, __libc_setspecific, and __libc_key_t.
	* sysdeps/pthread/stdio-lock.h: Don't care for implementation not
	using libio.

1997-03-19 15:13  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* sysdeps/sparc/pt-machine (RELEASE): Fix.

1997-03-01 07:55  Geoff Keating  <geoffk@ozemail.com.au>

	* sysdeps/powerpc/Implies: Added.
	* sysdeps/powerpc/pt-machine.h: Added.
	* sysdeps/powerpc/semaphorebits.h: Added.

1997-01-22 01:22  Ulrich Drepper  <drepper@cygnus.com>

	* linuxtheads/pthread.c (__pthread_initial_thread): Correct
	initializer.
	(__pthread_manager_thread): Likewise.
	Reported by Andreas Jaeger.

1997-01-18 22:15  Richard Henderson  <rth@tamu.edu>

	Since sigset_t no longer fits in a register, we can't pass in the
	thread's initial mask so easily.  Take this opportunity to simplify
	the clone implementation by only accepting a single void* argument.

	* linuxthreads/manager.c (__pthread_manager): Put thread vitals
	in the thread struct instead of as arguments through clone.
	(pthread_start_thread): Look for them there.
	* linuxthreads/internals.h (struct _pthread): Add p_initial_fn,
	p_initial_fn_arg, p_initial_mask.  Fix __pthread_manager proto.
	* linuxthreads/pthread.c (pthread_initialize_manager): Revise
	clone invocation.

1 files changed, 352 insertions, 0 deletions

diff --git a/linuxthreads/README.Xfree3.2 b/linuxthreads/README.Xfree3.2
new file mode 100644
index 0000000000..ac08e15832
--- /dev/null
+++ b/linuxthreads/README.Xfree3.2
@@ -0,0 +1,352 @@
+This file describes how to make a threaded X11R6.
+
+You need the source-code of XFree-3.2. I used the sources of X11R6.1
+(files: xc-1.tar.gz xc-2.tar.gz xc-3.tar.gz) and the patches to
+XFree-3.2 (files: README.X11.patch R6.1pl1-3.2.diff.gz cfont32.tgz).
+
+Untar the xc-?.tar.gz files in a directory called XF3.2 and apply
+the XFree-3.2 patches as described in README.X11.patch or use the
+whole XFree86 source.
+
+Now apply the thread patch with
+
+patch -p0 < XF3.2.xc.diff
+
+Go to the XF3.2/xc directory and make the whole thing:
+nice make World >& world.log &
+tail -f world.log
+
+Wait a few hours or interrupt the process after the shared libs
+are made. The shared libs are:
+
+XF3.2/xc/lib/ICE/libICE.so.6.0*
+XF3.2/xc/lib/PEX5/libPEX5.so.6.0*
+XF3.2/xc/lib/SM/libSM.so.6.0*
+XF3.2/xc/lib/X11/libX11.so.6.1*
+XF3.2/xc/lib/XIE/libXIE.so.6.0*
+XF3.2/xc/lib/XThrStub/libXThrStub.so.6.0*
+XF3.2/xc/lib/Xaw/libXaw.so.6.1*
+XF3.2/xc/lib/Xext/libXext.so.6.1*
+XF3.2/xc/lib/Xi/libXi.so.6.0*
+XF3.2/xc/lib/Xmu/libXmu.so.6.0*
+XF3.2/xc/lib/Xt/libXt.so.6.0*
+XF3.2/xc/lib/Xtst/libXtst.so.6.1*
+
+(The Program dga didn't compile, but I have not check out why.)
+
+Now you can copy the resulting libs   
+
+cp XF3.2/xc/lib/*/*.so.?.? /usr/X11R6/lib/
+
+and create some links
+
+cd /usr/X11R6/lib/
+ln -s libXThrStub.so.6.0 libXThrStub.so.6
+ln -s libXThrStub.so.6 libXThrStub.so
+
+or use make install (not tested, and needs new configuration).
+
+It is possible with the libXThrSub to compile X11 programs without linking
+libpthread to them and not necessary to recompile already installed
+unthreaded X11 programs, because libXThrSub keeps the dynamic linker quit.
+On the other hand you can link libpthread to a X11 program to use threads.
+
+I used linux 2.0.23 and libc 5.4.7 .
+
+Hans-Helmut Bühmann     hans@expmech.ing.tu-bs.de
+
+----------------------------------------------------------------------------
+
+XF3.2.xc.diff:
+-----------------------------------------------------------------------------
+diff -u --recursive XF3.2.orig/xc/config/cf/linux.cf XF3.2/xc/config/cf/linux.cf
+--- XF3.2.orig/xc/config/cf/linux.cf	Sun Nov 10 17:05:30 1996
++++ XF3.2/xc/config/cf/linux.cf	Sun Nov 10 16:30:55 1996
+@@ -61,6 +61,14 @@
+ #define HasSnprintf		YES
+ #endif
+ 
++#define HasPosixThreads         YES
++#define ThreadedX               YES
++#define BuildThreadStubLibrary	YES
++#define NeedUIThrStubs		YES
++#define HasThreadSafeAPI        NO
++#define SystemMTDefines         -D_REENTRANT
++#define ThreadsLibraries        -lpthread
++
+ #define AvoidNullMakeCommand	YES
+ #define StripInstalledPrograms	YES
+ #define CompressAllFonts	YES
+@@ -158,7 +166,7 @@
+ #define LdPostLib		/* Never needed */
+ 
+ #ifdef i386Architecture
+-#define OptimizedCDebugFlags	DefaultGcc2i386Opt -m486
++#define OptimizedCDebugFlags	DefaultGcc2i386Opt -m486 -pipe
+ #define StandardDefines		-Dlinux -D__i386__ -D_POSIX_SOURCE \
+ 				-D_BSD_SOURCE -D_SVID_SOURCE -DX_LOCALE
+ #define XawI18nDefines		-DUSE_XWCHAR_STRING -DUSE_XMBTOWC
+diff -u --recursive XF3.2.orig/xc/config/cf/lnxLib.tmpl XF3.2/xc/config/cf/lnxLib.tmpl
+--- XF3.2.orig/xc/config/cf/lnxLib.tmpl	Sun Nov 10 17:05:30 1996
++++ XF3.2/xc/config/cf/lnxLib.tmpl	Sat Nov  9 14:52:39 1996
+@@ -19,7 +19,7 @@
+ 
+ #define CplusplusLibC
+ 
+-#define SharedX11Reqs
++#define SharedX11Reqs  	-L$(BUILDLIBDIR) -lXThrStub 
+ #define SharedOldXReqs	$(LDPRELIB) $(XLIBONLY)
+ #define SharedXtReqs	$(LDPRELIB) $(XLIBONLY) $(SMLIB) $(ICELIB)
+ #define SharedXawReqs	$(LDPRELIB) $(XMULIB) $(XTOOLLIB) $(XLIB)
+diff -u --recursive XF3.2.orig/xc/include/Xthreads.h XF3.2/xc/include/Xthreads.h
+--- XF3.2.orig/xc/include/Xthreads.h	Thu Dec  7 02:19:09 1995
++++ XF3.2/xc/include/Xthreads.h	Sat Nov  9 01:04:55 1996
+@@ -229,12 +229,12 @@
+ #define xcondition_wait(c,m) pthread_cond_wait(c,m)
+ #define xcondition_signal(c) pthread_cond_signal(c)
+ #define xcondition_broadcast(c) pthread_cond_broadcast(c)
+-#ifdef _DECTHREADS_
++#if defined(_DECTHREADS_) || defined(linux)
+ static xthread_t _X_no_thread_id;
+ #define xthread_have_id(id) !pthread_equal(id, _X_no_thread_id)
+ #define xthread_clear_id(id) id = _X_no_thread_id
+ #define xthread_equal(id1,id2) pthread_equal(id1, id2)
+-#endif /* _DECTHREADS_ */
++#endif /* _DECTHREADS_ || linux */
+ #if _CMA_VENDOR_ == _CMA__IBM
+ #ifdef DEBUG			/* too much of a hack to enable normally */
+ /* see also cma__obj_set_name() */
+diff -u --recursive XF3.2.orig/xc/lib/X11/util/makekeys.c XF3.2/xc/lib/X11/util/makekeys.c
+--- XF3.2.orig/xc/lib/X11/util/makekeys.c	Mon Apr 18 02:22:22 1994
++++ XF3.2/xc/lib/X11/util/makekeys.c	Sat Nov  9 00:44:14 1996
+@@ -73,7 +73,7 @@
+     register char c;
+     int first;
+     int best_max_rehash;
+-    int best_z;
++    int best_z = 0;
+     int num_found;
+     KeySym val;
+ 
+diff -u --recursive XF3.2.orig/xc/lib/XThrStub/Imakefile XF3.2/xc/lib/XThrStub/Imakefile
+--- XF3.2.orig/xc/lib/XThrStub/Imakefile	Sun Nov 10 17:08:12 1996
++++ XF3.2/xc/lib/XThrStub/Imakefile	Sat Nov  9 19:04:51 1996
+@@ -25,7 +25,7 @@
+       DEFINES = $(ALLOC_DEFINES)
+      INCLUDES = 
+          SRCS = $(STUBSRCS)
+-         OBJS = $(STUBOBJS
++         OBJS = $(STUBOBJS)
+      LINTLIBS = $(LINTXLIB)
+ 
+ #include <Library.tmpl>
+diff -u --recursive XF3.2.orig/xc/lib/XThrStub/UIThrStubs.c XF3.2/xc/lib/XThrStub/UIThrStubs.c
+--- XF3.2.orig/xc/lib/XThrStub/UIThrStubs.c	Sun Nov 10 17:08:12 1996
++++ XF3.2/xc/lib/XThrStub/UIThrStubs.c	Sun Nov 10 15:14:55 1996
+@@ -37,16 +37,43 @@
+  * specificies the thread library on the link line.
+  */
+ 
++#if defined(linux)
++#include <pthread.h>
++#else
+ #include <thread.h>
+ #include <synch.h>
++#endif
+ 
++#if defined(linux)
++static pthread_t no_thread_id;
++#endif /* defined(linux) */
++
++#if defined(linux)
++#pragma weak pthread_self = _Xthr_self_stub_
++pthread_t 
++_Xthr_self_stub_()
++{
++    return(no_thread_id);
++}
++#else /* defined(linux) */
+ #pragma weak thr_self = _Xthr_self_stub_
+ thread_t 
+ _Xthr_self_stub_()
+ {
+     return((thread_t)0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak pthread_mutex_init = _Xmutex_init_stub_
++int 
++_Xmutex_init_stub_(m, a)
++    pthread_mutex_t *m;
++    __const pthread_mutexattr_t *a;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak mutex_init = _Xmutex_init_stub_
+ int 
+ _Xmutex_init_stub_(m, t, a)
+@@ -56,7 +83,17 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak pthread_mutex_destroy = _Xmutex_destroy_stub_
++int
++_Xmutex_destroy_stub_(m)
++    pthread_mutex_t *m;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak mutex_destroy = _Xmutex_destroy_stub_
+ int
+ _Xmutex_destroy_stub_(m)
+@@ -64,7 +101,17 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak pthread_mutex_lock = _Xmutex_lock_stub_
++int
++_Xmutex_lock_stub_(m)
++    pthread_mutex_t *m;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak mutex_lock = _Xmutex_lock_stub_
+ int
+ _Xmutex_lock_stub_(m)
+@@ -72,7 +119,17 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak pthread_mutex_unlock = _Xmutex_unlock_stub_
++int
++_Xmutex_unlock_stub_(m)
++    pthread_mutex_t *m;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak mutex_unlock = _Xmutex_unlock_stub_
+ int
+ _Xmutex_unlock_stub_(m)
+@@ -80,7 +137,18 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak  pthread_cond_init = _Xcond_init_stub_
++int 
++_Xcond_init_stub_(c, a)
++    pthread_cond_t *c;
++    __const pthread_condattr_t *a;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak cond_init = _Xcond_init_stub_
+ int 
+ _Xcond_init_stub_(c, t, a)
+@@ -90,7 +158,17 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak pthread_cond_destroy = _Xcond_destroy_stub_
++int
++_Xcond_destroy_stub_(c)
++    pthread_cond_t *c;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak cond_destroy = _Xcond_destroy_stub_
+ int
+ _Xcond_destroy_stub_(c)
+@@ -98,7 +176,18 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak pthread_cond_wait = _Xcond_wait_stub_
++int
++_Xcond_wait_stub_(c,m)
++    pthread_cond_t *c;
++    pthread_mutex_t *m;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak cond_wait = _Xcond_wait_stub_
+ int
+ _Xcond_wait_stub_(c,m)
+@@ -107,7 +196,17 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak pthread_cond_signal = _Xcond_signal_stub_
++int
++_Xcond_signal_stub_(c)
++    pthread_cond_t *c;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak cond_signal = _Xcond_signal_stub_
+ int
+ _Xcond_signal_stub_(c)
+@@ -115,7 +214,17 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
+ 
++#if defined(linux)
++#pragma weak pthread_cond_broadcast = _Xcond_broadcast_stub_
++int
++_Xcond_broadcast_stub_(c)
++    pthread_cond_t *c;
++{
++    return(0);
++}
++#else /* defined(linux) */
+ #pragma weak cond_broadcast = _Xcond_broadcast_stub_
+ int
+ _Xcond_broadcast_stub_(c)
+@@ -123,3 +232,15 @@
+ {
+     return(0);
+ }
++#endif /* defined(linux) */
++
++#if defined(linux)
++#pragma weak pthread_equal = _Xthr_equal_stub_
++int
++_Xthr_equal_stub_(t1, t2)
++    pthread_t t1;
++    pthread_t t2;
++{
++    return(1);
++}
++#endif /* defined(linux) */
+-------------------------------------------------------------------------