[fpc-pascal] Packaging shared libraries for OSX, recommendations?

[Jonas Maebe]

On 10 Jun 2013, at 11:41, Bruce Tulloch wrote:

> On Mon, Jun 10, 2013 at 6:59 PM, Jonas Maebe <jonas.maebe at elis.ugent.be 
> >wrote:
>
>> Under Mac OS X (and *BSD, and probably even most Linux  
>> distributions these
>> days), you would put it under /usr/local/[lib,include,share].
>
> Understood. So if we install our library, headers etc to
> /usr/local/[lib,include,share] is it true that like any UN*X, in OSX:
>
>   - Command line programs *and* GUI apps will be able to use our  
> library,

There is no difference between the two as far as the dynamic linker is  
concerned.

>   - XCode will be able to find and access the headers and,

Yes.

>   - XCode App programmers can copy the .dylib file (from
>   /usr/local/lib/libMyLib.dylib) to their project to include the  
> library and
>   avoid the need to redistribute our package?

The last part is incorrect. See e.g. http://qin.laya.com/tech_coding_help/dylib_linking.html 
  and https://blogs.oracle.com/dipol/entry/dynamic_libraries_rpath_and_mac 
  for more information. You need at least two versions of your  
library, or tell developers that want to include the library in their  
program to adapt the library's path with install_name_tool and compile/ 
link against this modified version because otherwise their application  
will still insist on only looking for the /usr/local/lib version  
(which is why distributing a /usr/local/lib version is such a bad  
idea, because developers won't notice on their own machine if they  
make a mistake since that version can be used without them realising it)

> Presuming the answers are all yes, is packagemaker the tool we  
> should be
> using to package the library for distribution?

Yes.


Jonas