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author | Adam Nemet <anemet@lnxw.com> | 2004-08-05 04:55:37 +0000 |
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committer | Adam Nemet <nemet@gcc.gnu.org> | 2004-08-05 04:55:37 +0000 |
commit | 4f587cb0d4e98c7e7960c32b775c7dfb4fd55e41 (patch) | |
tree | 23899f0239bbb781c6aec626b7661ea04b1cc069 /gcc/gthr-lynx.h | |
parent | 852910694f6d4480afd733a62fd6b93de62b51e6 (diff) | |
download | gcc-4f587cb0d4e98c7e7960c32b775c7dfb4fd55e41.zip gcc-4f587cb0d4e98c7e7960c32b775c7dfb4fd55e41.tar.gz gcc-4f587cb0d4e98c7e7960c32b775c7dfb4fd55e41.tar.bz2 |
config.gcc (case i[34567]86-*-lynxos*): Update to LynxOS 4.0.
* config.gcc (case i[34567]86-*-lynxos*): Update to LynxOS 4.0.
(case rs6000-*-lynxos*): Rename it to powerpc-*-lynxos*. Update
to LynxOS 4.0.
* gthr-lynx.h: New file.
* config/lynx-ng.h: Remove file.
* config/lynx.h: Update to LynxOS 4.0.
* config/t-lynx: New file.
* config/i386/lynx-ng.h: Remove file.
* config/i386/lynx.h: Update to LynxOS 4.0.
* config/rs6000/lynxbase.h: Remove file.
* config/rs6000/lynx.h: Update to LynxOS 4.0.
* config/rs6000/t-lynx: New file.
* doc/install.texi (Options specification): Remove reference to
LynxOS from systems where --with-gnu-as makes a difference.
From-SVN: r85591
Diffstat (limited to 'gcc/gthr-lynx.h')
-rw-r--r-- | gcc/gthr-lynx.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/gcc/gthr-lynx.h b/gcc/gthr-lynx.h new file mode 100644 index 0000000..651d719 --- /dev/null +++ b/gcc/gthr-lynx.h @@ -0,0 +1,64 @@ +/* Threads compatibility routines for libgcc2 and libobjc for + LynxOS. */ +/* Compile this one with gcc. */ +/* Copyright (C) 2004 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 2, 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. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. */ + +/* As a special exception, if you link this library with other files, + some of which are compiled with GCC, to produce an executable, + this library does not by itself cause the resulting executable + to be covered by the GNU General Public License. + This exception does not however invalidate any other reasons why + the executable file might be covered by the GNU General Public License. */ + +#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 pthead_create is weak its defining module in libc is not + necessarly 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 "gthr-posix.h" + +#else +#include "gthr-single.h" +#endif + +#endif /* GCC_GTHR_LYNX_H */ |