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Re: how to understand the java code wrapping around C or other dependency libraries?

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On Fri, 10 Jan 2014 07:16:20 -0800, zyng wrote:

> Our java program(running on linux) needs calling a C program installed
> on our linux machine. It works fine!
> 
> The thing I don't understand is when we deliver our product(the Java
> program) to our clients, who are using the same version Red Hat linux
> machines as us, but don't have that C program installed(it's very
> painful to install that C program for us due to the fact that the Red
> Hat version was old and the dependency library files are either
> out-of-dated or just not there. It took us a great amount of effort to
> install that C program. So we cannot assume or require our clients to
> install that program)
>
Try statically linking the C program and releasing it as a single 
executable. I have a number of C programs that I run under the Fedora 
distro that are compiled this way and run without problems, e.g.

hexdisp (compiled 2001), Bonnie and strproc (compiled 2003)

The hexdisp program looks too old to have been compiled under Fedora: it 
may have been last compiled under RedHat 7.2. 

IME statically linked programs pretty much 'just run' after a distro 
upgrade, but this isn't always the case for dynamically linked code.

> This C program has its library files and its library files needs other
> library files on the system. So, which library files needs to be
> selected and packed inside our JAR is unclear for me right now.
>
None of these executables are particularly big (14855, 22850, 21031 
respectively) so the overheads of this aren't big. The same has applied 
to the microEmacs editor (160KB, but recently recompiled for other 
reasons).


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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Thread

how to understand the java code wrapping around C or other dependency libraries? zyng <xsli2@yahoo.com> - 2014-01-10 07:16 -0800
  Re: how to understand the java code wrapping around C or other dependency libraries? Martin Gregorie <martin@address-in-sig.invalid> - 2014-01-10 20:41 +0000
  Re: how to understand the java code wrapping around C or other dependency libraries? Roedy Green <see_website@mindprod.com.invalid> - 2014-01-10 16:34 -0800

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