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Author SHA1 Message Date
Stephen Kelly a60027a642 Features: Ensure appropriate return value from feature test macros. 
GNU-CXX already has complex logic and sets the _result to 0 before
tests which may set it to something else.

Change the other modules to be consistent with that.
 2015-01-15 22:13:21 +01:00
Stephen Kelly 3ad893b5c2 Features: Record for historical Xcode clang versions. 2015-01-11 16:52:27 +01:00
Stephen Kelly 98965fb12d Features: Record dialect flags for AppleClang 4.0+. 2015-01-11 16:52:05 +01:00
Stephen Kelly bd6b42c186 Features: Record for AppleClang 5.1 
Apple's Clang 5.1 already supports most of the C and C++ features CMake
enumerates.
 2014-12-22 10:44:41 -05:00
Fraser Hutchison 4d52cd36ad Avoid if() quoted auto-dereference when checking for "MSVC" 
When testing CMAKE_<LANG>_COMPILER_ID values against "MSVC", do not
allow the definition of the "MSVC" variable to be expanded.
 2014-11-19 16:24:54 -05:00
Stephen Kelly 59b5fdd37c Don't load Clang-CXX from AppleClang-CXX. 
The Clang-CXX module is going to get version-specific checks, and
the version system for AppleClang is not the same as Clang.
 2014-04-07 16:48:44 +02:00
Brad King ab65862417 Clang: Add separate "AppleClang" compiler id 
Apple distributes their own Clang build with their own version numbers
that differ from upstream Clang.  Use the __apple_build_version__ symbol
to identify the Apple Clang compiler and report the Apple Build Version
as the fourth version component in CMAKE_<LANG>_COMPILER_VERSION.  Add
Compiler/AppleClang-<lang> and Platform/Darwin-AppleClang-<lang> modules
that simply include the upstream equivalents.

Fix comparisons of CMAKE_<LANG>_COMPILER_ID to Clang in CMake's own
source and tests to account for AppleClang.
 2013-10-07 20:12:46 -04:00