GNU issues: undefined reference to '_rand'
 

Greetings,

I am trying to compile legacy a code that worked well with f77 and g77 on linux platform. I am trying to use g95 since f77 and g77 are not available. The code is mostly in fortran and uses few c functions among. I am getting the undefined reference error for rand:

(.data+0x4): undefined referenec to '_rand'


I am defining my own function RANDOM and rand in an include file but I am not sure why it is failing to link and giving me such error?


external rand
double precision rand

#define RANDOM rr(nq)


I am puzzled by why g95 is giving me such issues?!


thanks!

Hi, welcome to LQ!

How are you invoking the compiler? For all I know you simply haven't
told it which library to link your old code against. The error you
see is not a compiler error, it's a linker one.



Cheers,
Tink

f77 and g77 are "always" available.

But you will have to tell, which Linux OS, you are using.

Should be be told by every question :
http://www.linuxquestions.org/linux/...Ask_a_Question
..