C++ compiler

Features

VSI C++ for OpenVMS provides the following features:

• Extensive error checking diagnostics.
• Automatic template instantiation compatible with older compilers for the OpenVMS Alpha platform. New ELF comdat-based template instantiation model for the OpenVMS Integrity servers platform.
• Enhanced debugger support.
• Language mode and diagnostic message options increase compatibility with earlier versions of the compiler, as well as with other implementations of C++.
• Fast compilation and increased code optimization by directly translating C++ source programs to object files.
• Extensive global and local optimizations of generated code for increased performance.
• Option for running only the preprocessor phase of compilation.
• Pragmas to control compiler options.
• Pragmas to control extern models, sharing of data between concurrent processes, and structure member alignment.
• Compiler-generated listing file, including optional: machine code, micro expansion, and compilation statistics.
• Data types for numeric, non-numeric, and systems programming.
• Integration into the Program Development Environment:
  • Generation of debug and traceback records for symbolic debugger support;
  • Conformance to the OpenVMS calling standard;
  • Access to OpenVMS run-time libraries for general purpose routines and support of multi-language environments;
  • Access to the data management facilities of OpenVMS RMS (Record Management Services);
  • Ability to package C++ code as shareable libraries;
  • Ability to use additional class libraries;
  • Support for generation of diagnostic information that can be used by the VSI Language-Sensitive Editor.

Libraries

VSI C++ for OpenVMS includes access to the following language libraries. Some of these components ship with the compiler kit, while others are shipped with the base OpenVMS operating system:

• The C++ Standard Library which is an implementation of the ANSI/ISO C++ Standard Library. Portions of this library are implemented using source code licensed from and copyrighted by Rogue Wave Software, Inc.
• The C++ Class Library which is a set of headers and other files implementing a collection of basic C++ classes, including the pre-ANSI IOSTREAMS classes. This library is provided to support software developers using VSI C++ for OpenVMS in conjunction with pre-existing software that depends upon pre-ANSI library features.
• The OpenVMS C Run-Time Library header files, reference manual, and library. These components allow programmers to access the rich functionality of the C Run-Time Library.
• Features to facilitate porting between VSI C++ for OpenVMS and other implementations of the C++ language. The compiler allows you to choose from several C++ language dialects that have evolved over the past several years: MS, GNU, ARM, or ANSI.
  • CXXDEMANGLE, a tool to decode compiler-generated names that enables other tools (besides the compiler and debugger) to present these decoded names to the user.
  • CXXLINK, a facility that lets you link your C++ application. Global names which are displayed by the linker utility are automatically demangled for readability.