[Nauty] installing Nauty on a PC

[Brendan McKay]

* Sterten at aol.com <Sterten at aol.com> [021116 20:15]:
>  >ALSO: I wonder if anyone got version 2.2 running on a PC.
>  >If so please be in touch.
> 
> I tried, but after some time I gave up.
> I have a working version of 2.0, (which took me quite some
> time to install) , so it's not very important
> for me to get 2.2 installed.
> 
> I use GCC203, DJGPP, under plain DOS.
> 
> here is an excert of errors which I encountered:

Hi, thanks for your reply.  It seems to me that all the problems
you encountered are compiler errors.  However, it may be possible
to work around them.
 
> naututil.c:67: redefinition of `long int seed'                                
> naututil.h:154: `long int seed' previously declared here                      

This situation is where two declarations appear:

long seed;        /* in naututil.h */
long seed = 1;    /* in naututil.c */
 
This is legal and the current C standard has an identical example.
The likely work-around is to add "extern" to the first declaration.
I'll do that but check it doesn't break anything before releasing it.
 
> D:\GCC203>gpp nautil.c                                                        
>   
> nautil.c: In function `void doref(graph *, int *, int *, int, int *, int *, 
> perm
> utation *, set *, int *, void (*)(), void (*)(), int, int, int, int, int, 
> int)':
>                                                                               
> nautil.c:473: too many arguments to function                                  

The situation here is that the function parameter indicated by
"void (*)()" in the parameter list is being invoked with a list
of parameters.  This is legal because a declaration without a
parameter list specified (like "()") is compatible with any
actual parameter list.  This is an important rule in C because
otherwise it is impossible to declare functions with a parameter
whose type is a function that has a function parameter of the
same type.  However, it might be possible to add the parameter
types of the function parameters in this case; I'll check.

> D:\GCC203>gpp nauty.c                                                         
>   
> nauty.c: In function `int firstpathnode0(int *, int *, int, int, tcnode *)':  
>   
> nauty.c:549: ANSI C++ prohibits conversion from `(graph *, int *, int *, int, 
> in
> t *, permutation *, set *, int *, int, int)' to `(...)'                       

This is the same problem and may have the same workaround.

> D:\GCC203>gpp nautaux.c                                                       
>   
> d:/gcc203/lib/crt0.o(.data+0xc2):crt0.s: undefined reference to `main'        
> d:/gcc203/tmp\cc1lRLci.o(.text+0x75):nautaux.c: undefined reference to 
> `alloc_error'                                                                          
These are link-type errors but you should not be linking this
file by itself.
 
Cheers, Brendan.