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author | Tom Tromey <tom@tromey.com> | 2023-08-27 11:37:38 -0600 |
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committer | Tom Tromey <tom@tromey.com> | 2023-11-07 17:47:12 -0700 |
commit | c6d6a048f5a6f422e470c7c4bdb21a0c59d7c8fd (patch) | |
tree | 6059da9eaca725a1e8582e4ae8c919f34019b430 /bfd/ax_tls.m4 | |
parent | 426931be4b538078c89c09d89ae3ecbab3146f46 (diff) | |
download | gdb-c6d6a048f5a6f422e470c7c4bdb21a0c59d7c8fd.zip gdb-c6d6a048f5a6f422e470c7c4bdb21a0c59d7c8fd.tar.gz gdb-c6d6a048f5a6f422e470c7c4bdb21a0c59d7c8fd.tar.bz2 |
Make various error-related globals thread-local
This changes bfd_error et al to be thread-local.
* Makefile.in: Regenerate.
* aclocal.m4: Include ax_tls.m4.
* ax_tls.m4: New file.
* bfd.c: (bfd_error, input_error, input_bfd, _bfd_error_buf):
Now thread-local.
(bfd_asprintf): Update docs.
* config.in, configure: Regenerate.
* configure.ac: Call AX_TLS.
* po/bfd.pot: Regenerate.
Diffstat (limited to 'bfd/ax_tls.m4')
-rw-r--r-- | bfd/ax_tls.m4 | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/bfd/ax_tls.m4 b/bfd/ax_tls.m4 new file mode 100644 index 0000000..fb184fe --- /dev/null +++ b/bfd/ax_tls.m4 @@ -0,0 +1,71 @@ +# =========================================================================== +# https://www.gnu.org/software/autoconf-archive/ax_tls.html +# =========================================================================== +# +# SYNOPSIS +# +# AX_TLS([action-if-found], [action-if-not-found]) +# +# DESCRIPTION +# +# Provides a test for the compiler support of thread local storage (TLS) +# extensions. Defines TLS if it is found. Currently knows about C++11, +# GCC/ICC, and MSVC. I think SunPro uses the same as GCC, and Borland +# apparently supports either. +# +# LICENSE +# +# Copyright (c) 2008 Alan Woodland <ajw05@aber.ac.uk> +# Copyright (c) 2010 Diego Elio Petteno` <flameeyes@gmail.com> +# +# This program 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 of the License, or (at your +# option) any later version. +# +# This program 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 this program. If not, see <https://www.gnu.org/licenses/>. +# +# As a special exception, the respective Autoconf Macro's copyright owner +# gives unlimited permission to copy, distribute and modify the configure +# scripts that are the output of Autoconf when processing the Macro. You +# need not follow the terms of the GNU General Public License when using +# or distributing such scripts, even though portions of the text of the +# Macro appear in them. The GNU General Public License (GPL) does govern +# all other use of the material that constitutes the Autoconf Macro. +# +# This special exception to the GPL applies to versions of the Autoconf +# Macro released by the Autoconf Archive. When you make and distribute a +# modified version of the Autoconf Macro, you may extend this special +# exception to the GPL to apply to your modified version as well. + +#serial 15 + +AC_DEFUN([AX_TLS], [ + AC_MSG_CHECKING([for thread local storage (TLS) class]) + AC_CACHE_VAL([ac_cv_tls], + [for ax_tls_keyword in thread_local _Thread_local __thread '__declspec(thread)' none; do + AS_CASE([$ax_tls_keyword], + [none], [ac_cv_tls=none ; break], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( + [#include <stdlib.h>], + [static $ax_tls_keyword int bar;] + )], + [ac_cv_tls=$ax_tls_keyword ; break], + [ac_cv_tls=none] + )] + ) + done ] + ) + AC_MSG_RESULT([$ac_cv_tls]) + + AS_IF([test "$ac_cv_tls" != "none"], + [AC_DEFINE_UNQUOTED([TLS],[$ac_cv_tls],[If the compiler supports a TLS storage class, define it to that here]) + m4_ifnblank([$1],[$1],[[:]])], + [m4_ifnblank([$2],[$2],[[:]])]) +]) |