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XLC - C Development - Static / Shared Library

  • 1.  XLC - C Development - Static / Shared Library

    Posted Sat June 02, 2007 10:53 AM

    Originally posted by: SystemAdmin


    Hello guys,
    i am a little bit confused about the AIX shared/static libraries.
    Until now i thought that *.so files are shared libraries and *.a are static ones.

    But for example the libc.a is a shared library.

    I found the following documentation on ibm information center:
    http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.ibm.vacpp7a.doc/proguide/ref/compile_library.htm

    So as i can see an archive (*.a file) can also be a shared libary, but i don't understand some points of the documentation, maybe you can help me:

    >>Compiling a shared library
    >>To create a shared library that uses static linking:

    >> Compiling a shared library
    >> To create a shared library that uses run-time linking:

    What does IBM mean with "To create a shared library that uses static linking"?

    Until now i thougt all shared libraries are linked dynamiclly at runtime and loaded by dlopen(). But what is a shared library with "static linking"?

    I am a little bit confused about that, because the libc.a is definitly a shared library that uses static linking, but i don't understand what this means.

    Maybe you can explain this and show the advantage/disadvantage between "shared library that uses static linking" and "shared library that uses run-time linking".

    I am sorry, if i post this topic in the wrong forum ...

    Thanks and Regards
    c_devel
    #AIX-Forum


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