dlopen() with dependencies between libraries

Posted by peastman on Stack Overflow See other posts from Stack Overflow or by peastman
Published on 2012-03-22T00:20:49Z Indexed on 2012/11/29 5:04 UTC
Read the original article Hit count: 476

Filed under:

osx

|

shared-libraries

|

dlopen

My program uses plugins, that are loaded dynamically with dlopen(). The locations of these plugins can be arbitrary, so they aren't necessarily in the library path. In some cases, one plugin needs to depend on another plugin. So if A and B are dynamic libraries, I'll first load A, then load B which uses symbols defined in A.

My reading of the dlopen() documentation implies that if I specify RTLD_GLOBAL this should all work. But it doesn't. When I call dlopen() on the second library, it fails with an error saying it couldn't find the first one (which had already been loaded with dlopen()):

Error loading library /usr/local/openmm/lib/plugins/libOpenMMRPMDOpenCL.dylib: dlopen(/usr/local/openmm/lib/plugins/libOpenMMRPMDOpenCL.dylib, 9): Library not loaded: libOpenMMOpenCL.dylib
Referenced from: /usr/local/openmm/lib/plugins/libOpenMMRPMDOpenCL.dylib
Reason: image not found

How can I make this work?

© Stack Overflow or respective owner

Related posts about osx

OSX/Wine - Associating file extension (.php) with a Windows program on OSX

as seen on Super User - Search for 'Super User'
Greetings, I am running PSPad (a Windows programming editor) on OSX/Snow Leopard using Wine 1.1.35 I want to associate various file extensions (.php, .js, .html) with PSPad.exe OSX Finder does not allow this association -- I can only associate file types with $.app items in Applications. How do… >>> More
osx web service spawns icon in taskbar - osx - while drawing image

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a web endpoint that displays an image of a string... When the following code is run (in tomcat) it spawns a java icon in the taskbar on OSX. Not sure if it is a problem, or whats going on. Looking for some sort of explination @RequestMapping("/text/{text}") public void textImage(HttpServletResponse… >>> More
Cannot disable spotlight indexing on volume

as seen on Super User - Search for 'Super User'
I have a FAT32 partition on my HDD. When using OSX, it is mounted to /Volumes/MEDIA. After a recent upgrade to Mavericks, spotlight is having trouble indexing it, eating up almost all of my system resources, and I cannot get the indexing to stop: [jay-mba-osx ~]% sudo mdutil -v -a -i off /: Indexing… >>> More
OSX - User home directories shared via NFS

as seen on Super User - Search for 'Super User'
Hi, I've run into some problems with how I've got user home directories set up on our system here. Our server is an XServe, using Open Directory to manage the user accounts. The majority of our workstations are OSX, but there are a few running Linux (Centos 5.3), and, as time goes on, we expect… >>> More
Can't connect to local IP address on OSX

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to connect to a webserver that's running on my mac OSX 1.6. I'm able to connect to it locally using http://127.0.0.1:8888/myapp but when I attempt to connect to it using my machine's local IP address (http://192.168.1.15:8888/myapp IP shown below) from the same machine (or another on the… >>> More

Related posts about shared-libraries

Separate log files for each web application and shared libraries with log4j

as seen on Stack Overflow - Search for 'Stack Overflow'
I have few web applications run on the Tomcat server. Each application contains its own log4j library copy inside its own war. This allows for separate, flexible logging configuration per application. I also have few shared libraries (kept in Tomcat's shared libraries directory). I would like to… >>> More
classes and static variables in shared libraries

as seen on Stack Overflow - Search for 'Stack Overflow'
I am trying to write something in c++ with an architecture like: App -- Core (.so) <-- Plugins (.so's) for linux, mac and windows. The Core is implicitly linked to App and Plugins are explicitly linked with dlopen/LoadLibrary to App. The problem I have: static variables in Core are duplicated… >>> More
Packaging a qt application compiled with shared libraries

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi Geeks, I downloaded the qt embedded demo source code recently on my linux machine. Following are the outcomes during running of the program I compiled it statically on my x86 machine and run the application on x86 machine it runs fine. But when i took the statically compiled binary file to other… >>> More
How does symbol binding work for shared libraries in linux

as seen on Stack Overflow - Search for 'Stack Overflow'
When compiling a cpp program with g++ -O0 I noticed that my binary does not contain the symbol for the empty string (basic_string): _S_empty_rep_storage When I do compile this same program with -O2 I notice that the aforementioned symbol is indeed contained within the binary as follows (using nm… >>> More
Linking against multiple shared libraries that all linked against a common static library

as seen on Stack Overflow - Search for 'Stack Overflow'
Say you have 2 share libraries, lib1.so and lib2.so, that both have libcommon.a statically linked into them. Would the compiler complain about ambiguous symbol reference if you were to dynamically link both lib1.so and lib2.so? Or would be the compiler be smart enough to know libcommon symbols are… >>> More