Hi again, I solved the problem. In fact it is not related to chuck or chugin but more related to C and C++ (and my poor knowledge of this last one). When including C function in a C++ project .h files must be modified like this to declare prototypes: #ifdef __cplusplus extern "C" { #endif // Your C prototypes #ifdef __cplusplus } #endif I understand this might be obvious for many of you, so I apologize for the noise on the mailing list. Have fun, Ju 2013/1/12 Julien Saint-Martin

Hi all,

I am currently trying to create a chugin with IBNIZ http://pelulamu.net/ibniz/ (it generate weird and loud sound, take care of your ears, headphones and speakers if you try it!!). My target is to only have sound from it.

Ibniz source code is C, so I added the C file defining the functions I want to reuse inside the chugin make file: C_MODULES=vm_slow.c

I call 3 of these functions inside the code generated by chuginate script: ibniz class defined in ibniz.cpp (chugin cpp source file)

Compilation seems ok except 2 warnings:

~/Chuck/chugins/ibniz$ make clean; make linux rm -rf vm_slow.o ibniz.o ibniz.chug gcc -D__LINUX_ALSA__ -I../chuck/include/ -fPIC -O3 -c -o vm_slow.o vm_slow.c g++ -D__LINUX_ALSA__ -I../chuck/include/ -fPIC -O3 -c -o ibniz.o ibniz.cpp In file included from ibniz.h:12:0, from ibniz.cpp:15: vm.h:46:3: warning: anonymous type with no linkage used to declare variable '<anonymous struct> vm' with linkage [enabled by default] ibniz.cpp: In constructor 'ibniz::ibniz(double)': ibniz.cpp:45:24: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings] gcc -shared -lstdc++ -o ibniz.chug vm_slow.o ibniz.o

Then I perform the: sudo make install

And the problem occurs when I try to launch a test.ck file [test.ck]:line(1): undefined type 'ibniz'... [test.ck]:line(1): ... in declaration ...

I added verbose option 3 to check what goes wrong and I found that my ibniz.chug is not loaded cause of the following error:

[chuck]:(3:SEVERE): | | error loading chugin 'ibniz.chug', skipping [chuck]:(3:SEVERE): | | error from chuck_dl: '/usr/lib/chuck/ibniz.chug: undefined symbol: _Z6vm_runv'

vm_run() is one of the C functions I call in the chugin cpp file. So I suppose _Z6vm_runv is linked to it.

As a test, I tried to remove all these C functions and the chugin is loading and running. So I think I made something wrong to integrate these functions correctly inside the chugin code.

Any idea? What is chuck_dl?

Thanks for your help. Ju