This section provides a brief description of each of the C++ libraries.
libCrun – Contains the runtime support needed by the compiler in the default standard mode (-compat=5). It provides support for new/delete, exceptions, and RTTI.
libCstd – The C++ standard library. In particular, this library includes iostreams. If you have existing sources that use the classic iostreams and you want to make use of the standard iostreams, you have to modify your sources to conform to the new interface. See the C++ Standard Library Reference online manual for details.
libiostream – The classic iostreams library built with -compat=5. If you have existing sources that use the classic iostreams and you want to compile these sources with the standard mode (–compat=5), you can use libiostream without modifying your sources. Use– library=iostream to get this library.
libstlport – The STLport implementation of the C++ standard library. You can use this library instead of the default libCstd by specifying the option -library=stlport4. However, you cannot use libstlport and libCstd in the same program. You must compile and link everything, including imported libraries, using one library or the other exclusively.
libgc – Used in deployment mode or garbage collection mode. Simply linking with the libgc library automatically and permanently fixes a program’s memory leaks. When you link your program with the libgc library, you can program without calling free or delete while otherwise programming normally. The garbage collection library has a dependency on the dynamic load library so specify -lgc and -ldl when you link your program.
Additional information can be found in the gcFixPrematureFrees(3) and gcInitialize(3) man pages.
libdemangle – Used for demangling C++ mangled names.
libstdc++ – The gcc implementation of the C++ standard library, used in -std=c++03 and -std=c++11 modes.
libgcc_s – Contains runtime support for code used in libstdc++.
libCrunG3 – Contains the runtime support needed by the compiler in the -std=c++03 and -std=c++11 modes. It provides support for new/delete, exceptions, and RTTI.