On Mar 13, 2006, at 3:35 PM, Garth Hjelte wrote:
At 02:52 PM 3/13/2006 -0600, you wrote:
> But I get an error in start the app in RB; "The application (null)
> could not be launched because of a shared library error:
> "R<main><main></Library/Application Support/ExtCompany/
> thislib.bundle><>"
>
> Perhaps it's because "thislib.bundle" is a Mach-O bundle and I
> can't get into it for the same reasons?
Right
When I look at thislib.sharedlib, it's a bundle. It only has one
thing in it, in the MacOS folder, an app called thislib. So I
pulled it out of the bundle and placed it where the bundle was. I
called it from RB, and still I get the error.
An application is not a library. You can't declare into an
application. Also, every bundle is not structured the same. You can
read about bundles at the link I gave you.
or you can use Soft Declare ... instead of just Declare, and
REALbasic will dynamically load it up.
I'm using RB5.5.4, so no Soft - but what difference would that
make? WHEN it loads doesn't make a difference, does it? I don't
understand why my RB app doesn't grab that exported function.
Soft declares are resolved at runtime, in a means that allows us to
do the CFBundle work for you. Regular declares just "import" the
functions from external libraries, and the application loader (part
of the OS) is responsible for tying everything together.
I read your http://realbasic.maccoding.com/dylib.html, but that
just deals with XCode and the example app is Mach-O.
Right. The only way declares work is against the same type of code
the application is compiled for. Soft declares are a bit nicer, and
can deal with more than regular declares can.
I know I can switch to all these things but right now I'm deal with
something very small and it needs to be done quickly.
So, is it possible for RB 5.5 to call an external Mach-O compiled
library? If so, what is wrong with the examples I provided?
Only if you compile a Mach-O application, write a plugin that uses
CFBundle to dynamically load the framework, or use the MBS plugin
which has SoftDeclareMBS (I've never used it personally, just know it
exists).
HTH,
Jon
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