Commit Graph

12 Commits

Author SHA1 Message Date
Stephen Kelly d13758514c Project: Don't require computed default dialect if compiler was forced.
Commit 7235334a (Project: Determine default language dialect for the
compiler., 2015-09-15) introduced a mechanism to determine the default
dialect used for the running compiler.  If conditions in
the <CompilerId>-<Lang>.cmake file are such that compile features for
that version of the compiler should be supported, the _DEFAULT_STANDARD
is set to the computed value.

However, the CMakeForceCompiler module allows users to bypass execution of the
compiler by CMake.  In that case, do not set the _DEFAULT_STANDARD variable at
all, which effectively disables the compile-features where the module is used.

No compile features have ever been recorded where the module is used so no
functionality is lost.
2015-09-22 22:13:15 +02:00
Stephen Kelly 7235334a2f Project: Determine default language dialect for the compiler.
Use the __cplusplus and __STDC_VERSION__ macros to automatically
determine the default dialect for the compiler while determining its
id and version.
2015-09-18 10:00:21 -04:00
Brad King 228643af6d AppleClang: Use modern C++14 standard flags for Apple Clang 6.1
The Apple Clang 6.1 compiler that comes with Xcode 6.3 is aware of the
modern -std=c++14 and -std=gnu++14 flags, so use them instead of the
"1y" flags.

Suggested-by: darkapostle@rule506.net
2015-07-09 09:11:57 -04:00
Stephen Kelly 9d767810e1 Features: Populate CMAKE_<LANG>_STANDARD_DEFAULT only for supported compilers.
If no compiler feature information is known for a given compiler
version, do not set a language standard default either.  The two
settings must be recorded consistently.
2015-02-04 18:29:53 -05:00
Stephen Kelly 82c9d6868b AppleClang: Remove redundant UNIX condition. 2015-02-04 18:28:06 -05:00
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