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Bug 836073 - Add MOZ_MSVC_VERSION_AT_LEAST() macro to mfbt/Compiler.h. r=Waldo

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This commit is contained in:
Birunthan Mohanathas 2014-06-20 09:19:35 -07:00
parent fb4c86430b
commit 620e8b1390
1 changed files with 20 additions and 2 deletions
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22
mfbt/Compiler.h
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@ -9,8 +9,12 @@
#ifndef mozilla_Compiler_h
#define mozilla_Compiler_h
#define MOZ_IS_GCC 0
#define MOS_IS_MSVC 0
#if !defined(__clang__) && defined(__GNUC__)
# undef MOZ_IS_GCC
# define MOZ_IS_GCC 1
/*
* This macro should simplify gcc version checking. For example, to check
@ -23,9 +27,23 @@
# error "mfbt (and Gecko) require at least gcc 4.4 to build."
# endif
#else
#elif defined(_MSC_VER)
# define MOZ_IS_GCC 0
# undef MOZ_IS_MSVC
# define MOZ_IS_MSVC 1
/*
* This macro should simplify MSVC version checking. For example, to check
* for VC10 or later, check `#ifdef MOZ_MSVC_VERSION_AT_LEAST(10)`.
*/
# define MOZ_MSVC_VERSION_AT_LEAST(version) \
(version == 10 ? _MSC_VER >= 1600 : \
(version == 11 ? _MSC_VER >= 1700 : \
(version == 12 ? _MSC_VER >= 1800 : \
(version == 13 ? _MSC_VER >= 1900 : \
0))))
# if !MOZ_MSVC_VERSION_AT_LEAST(10)
# error "mfbt (and Gecko) require at least MSVC 2010 RTM to build."
# endif
#endif