Linking Fortran and C++ code

[velvia]

Hello,

I want to call a C++ code from a Fortran code. I ended up with some problems at link time. To test a few things, I've done some very simple programs and did the following :

icc -c simple-c++.c

ifort -c gFASTdemo-fortran.f90

ifort gFASTdemo-fortran.o simple-c++.o -o main

wheresimple-c++.c is valid for both c and c++. It worked nicely. Then, I did

cpsimple-c++.csimple-c++.cpp

icc -c simple-c++.cpp

ifort -c gFASTdemo-fortran.f90

ifort gFASTdemo-fortran.o simple-c++.o -o main

and I now have the following output :

gFASTdemo-fortran.o: In function `MAIN__':

gFASTdemo-fortran.f90:(.text+0x3d9): undefined reference to `gFastVis'

simple-c++.o:(.eh_frame+0x12): undefined reference to `__gxx_personality_v0'

I understand that Fortran is interoperable with C and not with C++. But, is there a workaround to make it work with C++ ?

Francois

[mecej4]

You can call from Fortran a routine within a C++ source file if the routine is declared to have C linkage. For example:

extern "C" {...};

[TimP]

You will also require -lstdc++ appended to your link command.