On Tue, 7 Aug 2012, Krzysztof wrote:
Hi,
I have application which use openal.dll / openal.so library.
On windows this is easy and clear. I just put all files into InnoSetup
installer and my application find DLL in own directory.
But what with linux? I have installation script which:
- Copy executable to /usr/bin
- Copy icons to /usr/share/icons
- Add application to desktop menu bo copying .destkop file to
/usr/share/applications
I also have uninstall script which delete those files.
But don't know what to do with openal.so library. Should I copy it to
/usr/lib directory? But what if:
- This library already exists (installed e.g by apt-get install
libopenal) and my uninstall script try to delete it?
- This library doesn't exists an my install script copy it to lib
directory and then user try to install it by apt-get install
libopenal. What will happen?
Can I create some my application dir in /usr/bin where I copy all
files with librarys and only my application manage those librarys?
BTW: How linux librarys works? I mean, how portable application works.
If I run executable from unzipped folder, this application find .SO
library in that folder? (like on windows) Or must I create run.sh
script which export this path?
You should not do it like this. Never every copy files to /usr/lib or so.
If the user decides to install openal later, it will conflict with your
install.
If your app requires openal/sdl or whatever, make sure that these libraries
are installed through the packaging system. Either make a debian/rpm package,
and add it to the dependencies.
If you want to create a script that installs it anyway, make sure it
installs in to /opt/yourprogram/
with directories
bin
lib
Libraries go into lib.
Then create a startup shell script in /opt/yourprogram/bin that adds
/opt/yourprogram/lib
to the
LD_LIBRARY_PATH
environment variable, after which it starts the real binary.
(the installer should create this script)
Make a symlink to this shell script in /usr/bin or /usr/local/bin.
It's by far the easiest system.
Michael.
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