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<TITLE>sane-devel: Re: [dev] Problems with dynamic loading on AIX</TITLE>
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<META NAME="Author" CONTENT="Deiters (ukd@xenon.pc.Uni-Koeln.DE)">
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<H1>Re: [dev] Problems with dynamic loading on AIX</H1>
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<!-- subject="Re: [dev] Problems with dynamic loading on AIX" -->
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<STRONG>From:</STRONG> Deiters (<A HREF="mailto:ukd@xenon.pc.Uni-Koeln.DE?Subject=Re:%20[dev]%20Problems%20with%20dynamic%20loading%20on%20AIX&In-Reply-To=<200105021947.VAA28154@xenon.pc.Uni-Koeln.DE>"><EM>ukd@xenon.pc.Uni-Koeln.DE</EM></A>)<BR>
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<STRONG>Date:</STRONG> Wed May 02 2001 - 12:38:56 PDT
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<LI><STRONG>Next message:</STRONG> <A HREF="0032.html">Henning Meier-Geinitz: "Re: [dev] SANE documentation and latex problems"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0028.html">Henning Meier-Geinitz: "Re: [dev] Problems with dynamic loading on AIX"</A>
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On a HP workstation under HP-UX you build dynamic libraries by
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<BR>
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compiling with "relocatable flag" +z
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<BR>
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<P> cc -Aa -c +z +O2 subroutine.c -I where_I_hide_my_includes
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<BR>
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<P>and then you invoke the link editor to create the library:
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<BR>
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<P> ld -b -o mylib.sl subroutine1.o subroutine2.o -dld ...
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<BR>
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<P>Finally, you produce the executable:
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<BR>
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<P> ld -o myprog [-E] main.o mylib.sl ...
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<BR>
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<P>The "-E" forces all symbols in main() to be visible to the shared
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libraries. Without this, only those symbols are exported that
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<BR>
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are required by the shared libs at link time. If you dynamically
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<BR>
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load a library that needs more, you are in trouble; hence the "-E"
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<BR>
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option.
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<BR>
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<P>Of course, this applies to the HP C/C++ compiler. AIX may be different.
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<BR>
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<P>Regards,
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<BR>
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<P>Ulrich
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<BR>
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<P><P><PRE>
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--
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Source code, list archive, and docs: <A HREF="http://www.mostang.com/sane/">http://www.mostang.com/sane/</A>
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</PRE>
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