src/lib/libc++, branch release/10.1.0

MFC r261283:

2014-03-05T19:30:36Z

Import libc++ 3.4 release. This contains a lot of bugfixes, and some preliminary support for C++1y. MFC r261604: HEAD is not buildable for the past day. Commit a 'quick fix' in order to permit buildworld to complete. Reviewed by: theraven MFC r261608: Apply a cleaner solution for the sign warnings that can occur when compiling libc++'s header with -Wsystem-headers on. This has also been submitted upstream. Reported by: asomers MFC r261801: An ABI incompatibility crept into the libc++ 3.4 import in r261283. It was caused by upstream libc++ commit r194536, which aimed to make the headers more standards-compliant, by making std::pair's copy constructor trivial. Unfortunately, this could cause certain C++ applications using shared libraries built against the previous version of libc++ to crash. Fix the ABI incompatibility by making std::pair's copy constructor non-trivial again. Please note: Any C++ applications or shared libraries built with libc++ between r261283 and this revision should be recompiled. Reported by: stefanf

Add a c++/v1/tr1 include directory containing symlinks to all of the standard

2013-09-04T15:02:14Z

headrs. Lots of third-party code expects to find C++03 headers under tr1 because that's where GNU decided to hide them. This should fix ports that expect them there. MFC after: 1 week

After r253839, which modifies ld's behaviour to not automatically pull

2013-08-03T16:23:43Z

in needed libraries, change libc++.so into a linker script, so it can automatically pull in libcxxrt.so. MFC after: 1 week

Fix broken macro checking in the libc++ Makefile, introduced in r241909.

2012-11-02T12:18:38Z

This caused -std=c++0x not to be passed to the build by default. Pointy hat to: dim MFC after: 3 days

Allow building libc++ with any custom -std=xxx flag. Note that using

2012-10-22T19:44:17Z

-std=gnu++98 will give a lot of warnings with clang, so please use -std=c++0x or higher, or use NO_WERROR. MFC after: 1 week

Add libcxxrt's objects (prefixing them with cxxrt_ to avoid collisions)

2012-08-25T13:15:44Z

to libc++.a and libc++_p.a, to make static linking of C++ executables with libc++ easier. This is similar to the approach used in libstdc++. MFC after: 2 weeks

Install libcxxrt's C++ ABI and unwind headers. This is done in libc++'s

2012-06-02T11:07:19Z

Makefile, so these headers go into the same destination directory as libc++'s own headers, currently /usr/include/c++/v1. MFC after: 3 days

Tabify libcxxrt and libc++'s Makefiles.

2012-06-02T11:00:48Z

MFC after: 3 days

Make sure libgcc_s is finished building in _startup_libs before

2012-03-17T22:12:09Z

building libcxxrt with high -j levels. The workaround in libc++/Makefile isn't necessary once that race is solved. Reviewed by: theravin

Import new versions of libcxxrt and libc++.

2012-03-14T00:09:36Z

Please tests any C++ code you care about with -stdlib=libc++! Approved by: dim (mentor)