Linking to C++ Libraries

You can compile and link any C++ module to one or more libraries. HP aC++ automatically links the following libraries with a C++ executable.

•/usr/lib/hpux##/libCsup.so (the HP aC++ runtime support library)

•/usr/lib/hpux##/libstd_v2.so (standard C++ library: -AA)

•/usr/lib/hpux##/libc.so (the HP-UX system library)

•/usr/lib/hpux##/libdl.so (routines to manage shared libraries)

•/usr/lib/hpux##/libunwind.so (routines to unwind exceptions)

•/usr/lib/hpux##/libm.so (math library)

NOTE:

•When you specify the -boption to create a shared library, these defaults do not apply.

•When you specify the +std=c++11 (or the currently deprecated -Ax) option during the link time, libCsup11.so gets linked instead of libCsup.so.

Linking with Shared or Archive Libraries

If you want archive libraries instead of shared libraries, use the -a, archive linker option. To create a completely archived executable, use the +A option. To maintain compatibility with future releases, do not mix archive and shared libraries should not be mixed.

Refer to the HP-UX Linker and Libraries User’s Guide for more information.

Specifying Other Libraries

You can specify other libraries using the -loption. For example, to use the Tools.h++ library (-AAversion), specify -lrwtool_v2:

aCC myapp.C -lrwtool_v2

Creating and Using Shared Libraries

This section describes shared libraries that are specific to HP aC++. It discusses the following topics:

•Compiling for Shared Libraries

•Creating a Shared Library

•Using a Shared Library

•Linking Archive or Shared Libraries

•Updating a Shared Library

Compiling for Shared Libraries

To create a C++ shared library, you must first compile your C++ source with either the +z or +Z option. These options create object files containing position-independent code (PIC).

Example

The following example compiles util.C, generates position-independent code, and puts the code into the object file util.o. util.This object file can later be put into a shared library.

aCC -c +z util.C

180 Tools and Libraries