[XForms] How to tell my computer he should use a spezified version of xforms?

[Bernd Hahnebach]

Thanks, for help. They weren't exactly what I was looking for, but they
really got me on the way. After playing around using your tips, 
xforms hello world  example, ldd, ldconfig, a short description
of gcc compilerflaggs (man gcc is quit a BIG friend :-)) I found
what I was looking for.

Bernd


Angus Leeming schrieb:

>To subscribers of the xforms list
>
>
>On Tuesday 01 June 2004 11:35 pm, Bernd Hahnebach wrote:
>  
>
>>To subscribers of the xforms list
>>
>>
>>Hi,
>>
>>As a result of dot vs. comm problem I installed xforms 1.0.90 from
>>source code. For compilation of my software it is easy to tell
>>which version of the library should be used. Compiling my software
>>using static labrary it works.
>>
>>Asuming I compile using
>>shared library. I have got a problem. How do I know which
>>library is my computer using during run time of my software?
>>How can I tell him which library should he use?
>>
>>Both are versions 1.0.x
>>    
>>
>
>Hi, Bernd.
>
>Generally speaking, a link line such as
>
>$ cc -o trial trial.c -lforms -lX11
>
>will link against the .so versions of the libraries if the compiler 
>can find them.
>
>On linux, 
>$ ldd ./trial
>will list the shared object dependencies.
>
>If you look closely, you'll find that you have created executables 
>fdesign and fd2ps, linked both statically and dynamically.
>
>The static version of fdesign is found in $build_tree/fdesign/fdesign 
>whilst the dynamic version is found in 
>$build_tree/fdesign/.libs/fdesign
>
>$ cd fdesign
>$ ldd ./fdesign
>        not a dynamic executable
>$ ldd .libs/fdesign
>        libforms.so.1 => /usr/local/lib/libforms.so.1 (0x005f6000)
>        libSM.so.6 => /usr/X11R6/lib/libSM.so.6 (0x00513000)
>        libICE.so.6 => /usr/X11R6/lib/libICE.so.6 (0x00a4e000)
>        libXpm.so.4 => /usr/X11R6/lib/libXpm.so.4 (0x00ba4000)
>        libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x00181000)
>        libc.so.6 => /lib/tls/libc.so.6 (0x0029c000)
>        libm.so.6 => /lib/tls/libm.so.6 (0x008a7000)
>        libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x004cc000)
>        libdl.so.2 => /lib/libdl.so.2 (0x00111000)
>        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x00eda000)
>
>It is the dynamicly-linked version that is installed.
>
>The simplest way to make the two versions of your executable is:
>
>Dynamically-linked:
>$ gcc -o trial trial.c
>
>Staticly-linked:
>$ gcc -static -o trial trial.c
>
>If you don't use gcc, then 'man cc' is your friend.
>
>HTH,
>Angus
>
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>