• Nick (18/18) Nov 07 2005 I'm trying to build a simple interface between D with C++. I've made the
• Nick (7/11) Nov 07 2005 Nevermind, I found the answer. The problem is that dmd uses gcc to link,...
• R'emy Mou:eza (3/11) Nov 08 2005 You may need to link with the libstdc++ if you're working with both g++ ...
• Robert Jones (2/16) Dec 14 2005 how usable is that tool and where can i get it?

Nick <Nick_member pathlink.com> writes:

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

Nick <Nick_member pathlink.com> writes:

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

R'emy Mou:eza <R'emy_member pathlink.com> writes:

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.

Robert Jones <robertjones21 HotPOP.com> writes:

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?