"unable to load foreign library"

Dar Scott dsc at swcp.com
Fri Apr 15 02:03:01 EDT 2016


A utility named file sees both 32 and 64. The utility lipo sees 64.  

I'm suspecting dependencies.  This isn't my .dylib file.  

I'm wondering if there is a way I can check dlerror() somehow.  


> On Apr 14, 2016, at 9:41 PM, Monte Goulding <monte at appisle.net> wrote:
> 
> It's 32 bit?
> 
> Sent from my iPhone
> 
>> On 15 Apr 2016, at 1:07 PM, Dar Scott <dsc at swcp.com> wrote:
>> 
>> Thanks, Monte!
>> 
>> However, I still have the same error message, so my problem seems to be something else.  
>> 
>> I poked at it a bit.  
>> 
>> The error message seems to be in script-instance.cpp.  Looking at that, it seems that dlopen is used.  I don't have environment variables for dlopen, the best I can tell.  The man page for dlopen says that the backup environment variable does not exist, it is assumed to be "$HOME/lib:/usr/local/lib:/usr/lib".  Since the last is one of the places that I put the library, then I'm guessing the location is probably OK.  There might be some other  dependency I'm not aware of that is causing a problem.  
>> 
>> So, there must be something wrong with my .dylib reference.  I'll look into that.  
>> 
>> Dar
>> 
>> 
>>> On Apr 14, 2016, at 5:30 PM, Monte Goulding <monte at appisle.net> wrote:
>>> 
>>> Hi Dar!
>>> 
>>> The dylib should be found if it is in resources/code/mac/
>>> 
>>> // This is the callback given to libscript so that it can resolve the absolute
>>> // path of native code libraries used by foreign handlers in the module. At
>>> // the moment we use the resources path of the module, however it will need to be
>>> // changed to a separate location at some point with explicit declaration so that
>>> // iOS linkage and Android placement issues can be resolved.
>>> //
>>> // Currently it expects:
>>> //   <resources>
>>> //     code/
>>> //       mac/<name>.dylib
>>> //       linux-x86/<name>.so
>>> //       linux-x86_64/<name>.so
>>> //       win-x86/<name>.dll
>>> //
>>> static bool MCEngineResolveSharedLibrary(MCScriptModuleRef p_module, MCStringRef p_name, MCStringRef& r_path)
>>> {
>>>  // If the module has no resource path, then it has no code.
>>>  MCAutoStringRef t_resource_path;
>>>  if (!MCEngineLookupResourcePathForModule(p_module, Out(t_resource_path)))
>>>      return false;
>>> 
>>>  if (MCStringIsEmpty(*t_resource_path))
>>>      return false;
>>> 
>>> #if defined(_MACOSX)
>>>  return MCStringFormat(r_path, "%@/code/mac/%@.dylib", *t_resource_path, p_name);
>>> #elif defined(_LINUX) && defined(__32_BIT__)
>>>  return MCStringFormat(r_path, "%@/code/linux-x86/%@.so", *t_resource_path, p_name);
>>> #elif defined(_LINUX) && defined(__64_BIT__)
>>>  return MCStringFormat(r_path, "%@/code/linux-x86_64/%@.so", *t_resource_path, p_name);
>>> #elif defined(_WINDOWS)
>>>  return MCStringFormat(r_path, "%@/code/win-x86/%@.dll", *t_resource_path, p_name);
>>> #else
>>>  return false;
>>> #endif
>>> }
>>> 
>>> 
>>> Cheers
>>> 
>>> Monte
>>> 
>>>> On 15 Apr 2016, at 9:10 AM, Dar Scott <dsc at swcp.com> wrote:
>>>> 
>>>> I want to see the "Widgets by Dar" collection, too!  I'm not sure if I want the snap-together widgets or the "who needs LabView when you have LiveCode" widgets first.  I might start with some libraries.  
>>>> 
>>>> And I still haven't solved the issue with this error message.  I've tried putting my dynamic library everywhere and even popped it out of its own folder.  
>>> 
>>> 
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>> 
>> 
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