feedc0de/boost_config
1
0
Fork 0
forked from boostorg/config
Code Pull Requests Activity

Added BOOST_HAS_PRAGMA_ONCE for compilers that support it. The macro was already defined for DMC, but not for other compilers and was not documented.

Browse Source 
[SVN r84796]
This commit is contained in:
Andrey Semashev
2013-06-15 16:40:46 +00:00
parent 1c3d02c469
commit 75d100a4ac
7 changed files with 28 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
doc/macro_reference.qbk
View File

@ -397,6 +397,12 @@ See [@../../../../boost/operators.hpp `<boost/operators.hpp>`] for example.
The standard library has a partially conforming `std::allocator` class, but The standard library has a partially conforming `std::allocator` class, but
without any of the member templates. without any of the member templates.
]] ]]
[[`BOOST_HAS_PRAGMA_ONCE`][Compiler][
The compiler recognizes the `#pragma once` directive which tells that the
containing header should be included only once while preprocessing the
current translation unit. The pragma may improve compile times of large projects
with some compilers.
]]
[[`BOOST_HAS_PTHREAD_DELAY_NP`][Platform][ [[`BOOST_HAS_PTHREAD_DELAY_NP`][Platform][
The platform has the POSIX API `pthread_delay_np`. The platform has the POSIX API `pthread_delay_np`.
]] ]]

4
include/boost/config/compiler/borland.hpp
View File

@ -283,7 +283,3 @@
#define BOOST_NO_COMPLETE_VALUE_INITIALIZATION #define BOOST_NO_COMPLETE_VALUE_INITIALIZATION
#define BOOST_COMPILER "Borland C++ version " BOOST_STRINGIZE(__BORLANDC__) #define BOOST_COMPILER "Borland C++ version " BOOST_STRINGIZE(__BORLANDC__)

2
include/boost/config/compiler/clang.hpp
View File

@ -8,6 +8,8 @@
// Clang compiler setup. // Clang compiler setup.
#define BOOST_HAS_PRAGMA_ONCE
#if !__has_feature(cxx_exceptions) && !defined(BOOST_NO_EXCEPTIONS) #if !__has_feature(cxx_exceptions) && !defined(BOOST_NO_EXCEPTIONS)
# define BOOST_NO_EXCEPTIONS # define BOOST_NO_EXCEPTIONS
#endif #endif

6
include/boost/config/compiler/codegear.hpp
View File

@ -72,6 +72,12 @@
# endif # endif
#endif #endif
// Reportedly, #pragma once is supported since C++ Builder 2010
#if (__CODEGEARC__ >= 0x620)
# define BOOST_HAS_PRAGMA_ONCE
#endif
// //
// C++0x macros: // C++0x macros:
// //

5
include/boost/config/compiler/common_edg.hpp
View File

@ -54,6 +54,11 @@
# define BOOST_NO_LONG_LONG # define BOOST_NO_LONG_LONG
# endif # endif
// Not sure what version was the first to support #pragma once, but
// different EDG-based compilers (e.g. Intel) supported it for ages.
// Add a proper version check if it causes problems.
#define BOOST_HAS_PRAGMA_ONCE
// //
// C++0x features // C++0x features
// //

5
include/boost/config/compiler/gcc.hpp
View File

@ -80,6 +80,11 @@
# endif # endif
#endif #endif
// GCC prior to 3.4 had #pragma once too but it didn't work well with filesystem links
#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
#define BOOST_HAS_PRAGMA_ONCE
#endif
#if __GNUC__ < 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ < 4 ) #if __GNUC__ < 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ < 4 )
// Previous versions of GCC did not completely implement value-initialization: // Previous versions of GCC did not completely implement value-initialization:
// GCC Bug 30111, "Value-initialization of POD base class doesn't initialize // GCC Bug 30111, "Value-initialization of POD base class doesn't initialize

4
include/boost/config/compiler/visualc.hpp
View File

@ -34,6 +34,10 @@
// Attempt to suppress VC6 warnings about the length of decorated names (obsolete): // Attempt to suppress VC6 warnings about the length of decorated names (obsolete):
#pragma warning( disable : 4503 ) // warning: decorated name length exceeded #pragma warning( disable : 4503 ) // warning: decorated name length exceeded
#if _MSC_VER >= 1020
# define BOOST_HAS_PRAGMA_ONCE
#endif
// //
// versions check: // versions check:
// we don't support Visual C++ prior to version 6: // we don't support Visual C++ prior to version 6: