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Diffstat (limited to 'mfbt/Compiler.h')
| -rw-r--r-- | mfbt/Compiler.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/mfbt/Compiler.h b/mfbt/Compiler.h new file mode 100644 index 0000000000..2c7dcc7c59 --- /dev/null +++ b/mfbt/Compiler.h @@ -0,0 +1,34 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* Various compiler checks. */ + +#ifndef mozilla_Compiler_h +#define mozilla_Compiler_h + +#define MOZ_IS_GCC 0 + +#if !defined(__clang__) && defined(__GNUC__) + +# undef MOZ_IS_GCC +# define MOZ_IS_GCC 1 +/* + * These macros should simplify gcc version checking. For example, to check + * for gcc 4.7.1 or later, check `#if MOZ_GCC_VERSION_AT_LEAST(4, 7, 1)`. + */ +# define MOZ_GCC_VERSION_AT_LEAST(major, minor, patchlevel) \ + ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= \ + ((major)*10000 + (minor)*100 + (patchlevel))) +# define MOZ_GCC_VERSION_AT_MOST(major, minor, patchlevel) \ + ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) <= \ + ((major)*10000 + (minor)*100 + (patchlevel))) +# if !MOZ_GCC_VERSION_AT_LEAST(6, 1, 0) +# error "mfbt (and Gecko) require at least gcc 6.1 to build." +# endif + +#endif + +#endif /* mozilla_Compiler_h */ |