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| author | H.J. Lu <hjl.tools@gmail.com> | 2015-07-14 08:43:24 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-07-14 09:18:16 -0700 |
| commit | 49d00f48e8e3c1331d367785f19c69867a47b4cd (patch) | |
| tree | 5d9edd2b228cf66d312491ea7bf535647a0bcd27 /config/bitfields.m4 | |
| parent | 99fe86f7999afd2743b08c550b10f083ae4bd9bd (diff) | |
| download | binutils-gdb-49d00f48e8e3c1331d367785f19c69867a47b4cd.tar.gz | |
Sync config files with GCC
Sync with GCC
2015-05-13 Eric Botcazou <ebotcazou@adacore.com>
* sjlj.m4: New file.
2015-05-04 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* bitfields.m4: Change int to long long, and use bitfields of
width 1 instead of 0.
2015-05-01 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* bitfields.m4: New file.
2015-04-14 H.J. Lu <hongjiu.lu@intel.com>
* bootstrap-mpx.mk: New file.
2015-03-25 Uros Bizjak <ubizjak@gmail.com>
PR bootstrap/65537
* bootstrap-lto-noplugin.mk: New build configuration.
2014-11-13 Kirill Yukhin <kirill.yukhin@intel.com>
* target-posix: New file.
2014-10-27 Tom Tromey <tromey@redhat.com>
* gcc-plugin.m4: New file.
Diffstat (limited to 'config/bitfields.m4')
| -rw-r--r-- | config/bitfields.m4 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/config/bitfields.m4 b/config/bitfields.m4 new file mode 100644 index 00000000000..8185cd302a9 --- /dev/null +++ b/config/bitfields.m4 @@ -0,0 +1,25 @@ +dnl Copyright (C) 2015 Free Software Foundation, Inc. +dnl This file is free software, distributed under the terms of the GNU +dnl General Public License. As a special exception to the GNU General +dnl Public License, this file may be distributed as part of a program +dnl that contains a configuration script generated by Autoconf, under +dnl the same distribution terms as the rest of that program. + +# Define HAVE_BITFIELD_TYPE_MATTERS if the type of bitfields effects their +# alignment. + +AC_DEFUN([gt_BITFIELD_TYPE_MATTERS], +[ + AC_CACHE_CHECK([if the type of bitfields matters], gt_cv_bitfield_type_matters, + [ + AC_TRY_COMPILE( + [struct foo1 { char x; char y:1; char z; }; +struct foo2 { char x; long long int y:1; char z; }; +int foo1test[ sizeof (struct foo1) < sizeof (struct foo2) ? 1 : -1 ]; ], + [], gt_cv_bitfield_type_matters=yes, gt_cv_bitfield_type_matters=no) + ]) + if test $gt_cv_bitfield_type_matters = yes; then + AC_DEFINE(HAVE_BITFIELD_TYPE_MATTERS, 1, + [Define if the type of bitfields effects alignment.]) + fi +]) |