[Clas_offline] C++ fnc call from Fortran

[Taisiya Mineeva]

Dear All,

Thank you for your prompt reponse.

As for the test programm following compiles/links and produces correct
output:
>g++ -c test_c++.cc
>g77 -c test_f.f
>g++ -o test_run test_f.o test_c++.o

When using gfortran instead of g77, I have following:
>g++ -c test_c++.cc
>gfortran -c test_f.f
>g++ -o test_run test_f.o test_c++.o
test_f.o: In function `mymain_':
test_f.f:(.text+0x2e): undefined reference to `_gfortran_copy_string'
collect2: ld returned 1 exit status

I am not an expert with fortran, but for the reference, the test programm
is in : /u/home/mineeva/Lepto/TEST.

Thank you in advance,
Taya


> Hello,
>
> I am writing to you with the question concerning calling a C++/ROOT
> function in Fortran code.
>
> I have a working test example of an external C++ function that is called
> in Fortran. This compiles/links well with g77/g++. However, the same
> procedure for compiling and linking does not work with gfortran/g++.
>
> My problem is that in order to compile Lepto generator (Fortran), where I
> am calling a C++ fnc, I need to use a set of cernlibs that have been
> compiled with gfortran.  But the call in Fortran to C++ function does not
> compiles with gfortran.
>
> I would appreciate some guidance as to how proceed with gfortran/g++ on
> JLab CUE to call C++ from Fortran.
>
> Thank you in advance,
> Taya
>
>
>
>
>