Problem loading a dylib file through LOAD-FOREIGN-FUNCTION

[Frank Goenninger]

Ok, jumping in here.

The output says it all:

$ file /usr/local/lib/libsmvgrammar.dylib
/usr/local/lib/libsmvgrammar.dylib: Mach-O universal binary with 1
architecture: [x86_64: Mach-O 64-bit x86_64 dynamically linked shared
library]

So, this *is* a shared library.

$ file /usr/local/lib/libsmvgrammar.0.dylib
/usr/local/lib/libsmvgrammar.0.dylib: Mach-O universal binary with 1
architecture: [x86_64: Mach-O 64-bit x86_64 dSYM companion file]

And this is *not*. It therefore should *not* have the .dylib ending - but
.dsym. This is one error. The build process seems to be in error here.
What does otool -L say on both files?
There should be *no* reference to /usr/local/lib/libsmvgrammar.0.xxx in
/usr/local/lib/libsmvgrammar.dylib.

To analyze further: did you get these libs from? (Sorry, didn't follow the
whole thread).

Regards
  Frank



Am 26.08.13 02:54 schrieb "Robert P. Goldman" unter <rpgoldman at sift.info>:

>Luís Oliveira wrote:
>> On Sun, Aug 25, 2013 at 3:34 PM, Robert P. Goldman
>><rpgoldman at sift.info> wrote:
>>> $ file /usr/local/lib/libsmvgrammar.0.dylib
>>> /usr/local/lib/libsmvgrammar.0.dylib: Mach-O universal binary with 1
>>> architecture: [x86_64: Mach-O 64-bit x86_64 dSYM companion file]
>>
>> This description doesn't look right. The dylibs on my system look like
>>this:
>>
>> $ file libtest.dylib
>> libtest.dylib: Mach-O 64-bit dynamically linked shared library x86_64
>>
>> Perhaps the project you're compiling should be passing -dynamiclib to
>> gcc but isn't?
>>
>
>Actually, I think what's wrong is that dlopen is goIng pear-shaped when
>it tries to load the dSYM companion file.  This is a file that seems to
>be ancillary to libsmvgrammar.dylib, which IS a dynamically linked shared
>library:
>
>$ file /usr/local/lib/libsmvgrammar.dylib
>/usr/local/lib/libsmvgrammar.dylib: Mach-O universal binary with 1
>architecture: [x86_64: Mach-O 64-bit x86_64 dynamically linked shared
>library]
>$ file /usr/local/lib/libsmvgrammar.0.dylib
>/usr/local/lib/libsmvgrammar.0.dylib: Mach-O universal binary with 1
>architecture: [x86_64: Mach-O 64-bit x86_64 dSYM companion file]
>
>The main library file I am trying to load somehow references
>libsmvgrammar.0.dylib, causing it to be loaded with dlopen and then I get
>the error.  But I can't see why it would be trying to dlopen() what seems
>like a symbol table.
>
>