The compiler has access to the complete library specified by the C++ standard. The library components include what is informally known as the Standard Template Library (STL) , as well as the following components:
String classes
Numeric classes
Standard stream I/O classes
Basic memory allocation
Exception classes
Runtime type information
The term STL does not have a formal definition, but it is usually understood to include containers, iterators, and algorithms.
In -compat=5 mode:
The C++ standard library (libCstd) is based on the RogueWave Standard C++ Library, Version 2. This library is the default.
The C++ compiler also supports STLport’s Standard Library implementation version 4.5.3. libCstd is still the default library, but STLport’s product is available as an alternative. See STLport for more information.
the C++ compiler also supports the Apache stdcxx library that is available on Oracle Solaris as an alternative to libCstd and STLport. See Apache stdcxx Standard Library for more information.
If you need to use your own version of the C++ standard library instead of one of the versions that is supplied with the compiler, you can do so by specifying the –library=no%Cstd option. Replacing the standard library that is distributed with the compiler is risky, and good results are not guaranteed. For more information, see Replacing the C++ Standard Library.