Re: CFFI problem with LispWorks

Hi Sascha,

Try to load library libA first, then libB explicitly and make sure CFFI can find them both.

On May 7, 2011, at 8:07 PM, sascha.vancauwelaert wrote:

> Hello,
> 
> for now, I am trying to use CFFI to interface C++ code towards LispWorks. I tested on a simple example and it works on the SBCL implementation of Common Lisp but not on LispWorks. The thing is I have to use LispWorks so I am stuck. I also have to be able to put code in different files. I am working on MacOS X and have to do. All the code used is showed below, with the error at the end. I tried to load the library libA.so only and it works but I need to load the library libB which doesn't. 
> 
> Thank you for your help.
> 
> Sascha Van Cauwelaert.
> 
> Here are the different codes (files name are commented just above the code):
> 
> //a.hh
> class A { public: void func(); }; 
> 
> //a.cc
> #include <iostream>
> #include "a.hh"
> void A::func() { std::cout << "Hello World!" << std::endl; } 
> 
> //b.cc
> #include "a.hh"
> extern "C" {
>   void a_func() { A *a = new A(); a->func(); delete a; }
> } 
> 
> //Makefile
> all: libA.so libB.so
> 
> libA.so: a.cc
> 	g++ -arch i386 -fPIC -o $@ -shared $<
> 
> libB.so: b.cc
> 	g++ -arch i386 -fPIC -o $@ -shared -L. -lA $< 
> 
> //load.lisp
> ;;before this, cffi loading is done
> (cffi:load-foreign-library "/FullPathTowardsLibraryFile/libB.so") 
> 
> 
> Here is the error I got :
> 
> CL-USER 16 > (cffi:load-foreign-library "/FullPathTowardsLibraryFile/libB.so") 
> 
> Error: Unable to load foreign library (LIBRARY-54605).
>   Could not register handle for external module #:LIBRARY-54605:
>  Library not loaded: libA.so
>   Referenced from: /FullPathTowardsLibraryFile/libB.so
>   Reason: image not found.
>   1 (continue) Try loading the foreign library again.
>   2 Use another library instead.
>   3 (abort) Return to level 0.
>   4 Return to top loop level 0.
> 
> 
> 

--ska

Re: CFFI problem with LispWorks