I'm trying to build a simple interface between D with C++. I've made the following short test:

-- dtest.d --
import std.stdio;
extern(C) void cfunc();
extern(C) void dfunc() {}
void main() { cfunc(); }

-- ctest.cpp --
extern "C" void dfunc();
extern "C" void cfunc() { dfunc(); }

Compiling:
$ g++ -c ctest.cpp
$ dmd dtest.d ctest.o
gives the linker error:
tmp.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'

Does anybody have any hints? It works perfectly if I rename .cpp to .c and use gcc instead. I have gcc 4.0.2.

Nick

In article <dkoiic$nnc$1@digitaldaemon.com>, Nick says... [...]
>$ g++ -c ctest.cpp
>$ dmd dtest.d ctest.o
>gives the linker error:
>tmp.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'

Nevermind, I found the answer. The problem is that dmd uses gcc to link, not g++, and that may cause some problems when linking c++ programs. For some reason it worked with my actual program once I tested it. Anyway, the safest solution (in case anyone stumbles onto this later) is to link using g++, not dmd.

Nick

>In article <dkoiic$nnc$1@digitaldaemon.com>, Nick says... [...]
>>$ g++ -c ctest.cpp
>>$ dmd dtest.d ctest.o
>>gives the linker error:
>>tmp.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
>
>Nevermind, I found the answer. The problem is that dmd uses gcc to link, not g++, and that may cause some problems when linking c++ programs.

You may need to link with the libstdc++ if you're working with both g++ and dmd. I also made a tool to wrap C++ header files to D and when I was working with gdc it would not work unless I use the -lstdc++ flag.

R'emy Mou:eza said the following on 11/8/2005 3:22 AM:
>> In article <dkoiic$nnc$1@digitaldaemon.com>, Nick says...
>> [...]
>>> $ g++ -c ctest.cpp
>>> $ dmd dtest.d ctest.o
>>> gives the linker error:
>>> tmp.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
>> Nevermind, I found the answer. The problem is that dmd uses gcc to link, not
>> g++, and that may cause some problems when linking c++ programs. 
> 
> You may need to link with the libstdc++ if you're working with both g++ and dmd.
> I also made a tool to wrap C++ header files to D and when I was working with gdc
> it would not work unless I use the -lstdc++ flag.
> 
> 
how usable is that tool and where can i get it?