"libc++" C++ Standard Library

libc++ is a new implementation of the C++ standard library, targeting C++0X.

All of the code in libc++ is available under the standard LLVM License, a "BSD-style" license.

Features and Goals

• Correctness as defined by the (currently draft) C++0X standard.
• Fast execution.
• Minimal memory use.
• Fast compile times.
• ABI compatibility with gcc's libstdc++ for some low-level features such as exception objects, rtti and memory allocation.
• Extensive unit tests.

Platform Support

libc++ is known to work on the following platforms, using g++-4.2 and clang (lack of C++0X language support disables some functionality).

• Mac OS X i386
• Mac OS X x86_64

Current Status

libc++ is still under development. It has about 85% of N3092 implemented/tested.

• Missing <future>
• Missing <regex>
• Under construction <random>

libc++ is currently dependent upon a separate library for the low-level ABI compatibility with gcc. As a workaround it can be linked against gcc's libstdc++.

Get it and get involved!

To check out the code, use:

• svn co http://llvm.org/svn/llvm-project/libcxx/trunk libcxx
• cd libcxx/lib
• ./buildit

To run the libc++ test suit (recommended):

• cd libcxx/test
• ./testit

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