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Diffstat (limited to 'mfbt/Compiler.h')
| -rw-r--r-- | mfbt/Compiler.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/mfbt/Compiler.h b/mfbt/Compiler.h new file mode 100644 index 0000000..58239b0 --- /dev/null +++ b/mfbt/Compiler.h @@ -0,0 +1,31 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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_ + +#if !defined(__clang__) && defined(__GNUC__) + +#define MOZ_IS_GCC 1 + /* + * This macro should simplify gcc version checking. For example, to check + * for gcc 4.5.1 or later, check `#ifdef MOZ_GCC_VERSION_AT_LEAST(4, 5, 1)`. + */ +# define MOZ_GCC_VERSION_AT_LEAST(major, minor, patchlevel) \ + ((__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) \ + >= ((major) * 10000 + (minor) * 100 + (patchlevel))) +#if !MOZ_GCC_VERSION_AT_LEAST(4, 4, 0) +# error "mfbt (and Gecko) require at least gcc 4.4 to build." +#endif + +#else + +#define MOZ_IS_GCC 0 + +#endif + +#endif /* mozilla_Compiler_h_ */ |