Move gthr to toplevel libgcc

	gcc:
	* gthr-single.h, gthr.h: Move to ../libgcc.
	* gthr-aix.h: Move to ../libgcc/config/rs6000.
	* gthr-dce.h: Move to ../libgcc/config/pa.
	* gthr-lynx.h: Move to ../libgcc/config.
	* gthr-mipssde.h: Move to ../libgcc/config/mips.
	* gthr-posix.h: Move to ../libgcc/config.
	* gthr-rtems.h: Likewise.
	* gthr-tpf.h: Move to ../libgcc/config/s390.
	* gthr-vxworks.h: Move to ../libgcc/config.
	* gthr-win32.h: Move to ../libgcc/config/i386.
	* configure.ac (gthread_flags): Remove
	(gthr-default.h): Don't create.
	(thread_file): Don't substitute.
	* configure: Regenerate.
	* Makefile.in (GCC_THREAD_FILE): Remove.
	(GTHREAD_FLAGS): Remove.
	(libgcc.mvars): Remove GTHREAD_FLAGS.
	* config/t-vxworks (EXTRA_HEADERS): Remove.

	gcc/po:
	* EXCLUDES (gthr-aix.h, gthr-dce.h, gthr-posix.c, gthr-posix.h)
	(gthr-rtems.h, gthr-single.h, gthr-solaris.h, gthr-vxworks.h)
	(gthr-win32.h, gthr.h): Remove.

	libgcc:
	* gthr-single.h, gthr.h: New files.
	* config/gthr-lynx.h, config/gthr-posix.h., config/gthr-rtems.h,
	config/gthr-vxworks.h, config/i386/gthr-win32.h,
	config/mips/gthr-mipssde.h, config/pa/gthr-dce.h,
	config/rs6000/gthr-aix.h, config/s390/gthr-tpf.h: New files.
	* config/i386/gthr-win32.c: Include "gthr-win32.h".
	* configure.ac (thread_header): New variable.
	Set it depending on target_thread_file.
	(gthr-default.h): Link from $thread_header.
	* configure: Regenerate.
	* Makefile.in (LIBGCC2_CFLAGS): Remove $(GTHREAD_FLAGS).

	libgfortran:
	* Makefile.am (AM_CPPFLAGS): Add
	-I$(srcdir)/$(MULTISRCTOP)../libgcc, -I$(MULTIBUILDTOP)../libgcc.
	* Makefile.in: Regenerate.
	* acinclude.m4 (LIBGFOR_CHECK_GTHR_DEFAULT): Remove.
	* configure.ac (LIBGFOR_CHECK_GTHR_DEFAULT): Likewise.
	* configure: Regenerate.
	* config.h.in: Regenerate.

	libobjc:
	* Makefile.in (INCLUDES): Add -I$(MULTIBUILDTOP)../libgcc.
	* configure.ac (target_thread_file, HAVE_GTHR_DEFAULT): Remove.
	* configure: Regenerate.
	* config.h.in: Regenerate.

	libstdc++-v3:
	* acinclude.m4 (GLIBCXX_CONFIGURE): Determine and substitute
	toplevel_builddir.
	(GLIBCXX_ENABLE_THREADS): Remove glibcxx_thread_h,
	HAVE_GTHR_DEFAULT, enable_thread.
	(GLIBCXX_CHECK_GTHREADS): Reflect gthr move to libgcc.
	* include/Makefile.am (thread_host_headers): Remove
	${host_builddir}/gthr-tpf.h.
	(${host_builddir}/gthr.h): Reflect gthr move to libgcc.
	Use $<.
	(${host_builddir}/gthr-single.h): Likewise.
	(${host_builddir}/gthr-posix.h): Likewise.
	(${host_builddir}/gthr-tpf.h): Remove.
	(${host_builddir}/gthr-default.h): Likewise.
	* configure, config.h.in: Regenerate.
	* Makefile.in, doc/Makefile.in, include/Makefile.in,
	libsupc++/Makefile.in, po/Makefile.in, python/Makefile.in,
	src/Makefile.intestsuite/Makefile.in: Regenerate.

From-SVN: r180776

1 files changed, 61 insertions, 0 deletions

diff --git a/libgcc/config/gthr-lynx.h b/libgcc/config/gthr-lynx.h
new file mode 100644
index 0000000..c98c2e6
--- /dev/null
+++ b/libgcc/config/gthr-lynx.h
@@ -0,0 +1,61 @@
+/* Threads compatibility routines for libgcc2 and libobjc for
+   LynxOS.  */
+/* Compile this one with gcc.  */
+/* Copyright (C) 2004, 2008, 2009, 2011 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_GTHR_LYNX_H
+#define GCC_GTHR_LYNX_H
+
+#ifdef _MULTITHREADED
+
+/* Using the macro version of pthread_setspecific leads to a
+   compilation error.  Instead we have two choices either kill all
+   macros in pthread.h with defining _POSIX_THREADS_CALLS or undefine
+   individual macros where we should fall back on the function
+   implementation.  We choose the second approach.  */
+
+#include <pthread.h>
+#undef pthread_setspecific
+
+/* When using static libc on LynxOS, we cannot define pthread_create
+   weak.  If the multi-threaded application includes iostream.h,
+   gthr-posix.h is included and pthread_create will be defined weak.
+   If pthread_create is weak its defining module in libc is not
+   necessarily included in the link and the symbol is resolved to zero.
+   Therefore the first call to it will crash.
+
+   Since -mthreads is a multilib switch on LynxOS we know that at this
+   point we are compiling for multi-threaded.  Omitting the weak
+   definitions at this point should have no effect.  */
+
+#undef  GTHREAD_USE_WEAK
+#define GTHREAD_USE_WEAK 0
+
+#include "config/gthr-posix.h"
+
+#else
+#include "gthr-single.h"
+#endif
+
+#endif /* GCC_GTHR_LYNX_H */