Re: gp2c , pari library and st99

[Bill Allombert <Bill.Allombert@math.u-bordeaux1.fr>]

On Sat, May 12, 2007 at 11:29:46AM +0200, Olivier Ramare wrote:
> Dear all,
> 
>   I need the compilation option -st99 to be able
> to use the linear programming solver lpsolve

Try -std=gnu99

> (otherwise, it does not know long long, or so it says :-().

This is a warning not an error, see below.

>   My understanding of C code is limited, but
> the code produced by gp2c does not meet this requirement,
> or maybe it is the whole pari library that does not --
>   Or maybe I could change the standard in between?

Yes, the C standard does not change the ABI, so you do not need to
compile everything with the same standard.

The issue is that PARI was configured with -std=gnu89. Unfortunately
this cause it to not define ulong which is needed when compiled with
-std=c89 or -std=c99. This is a serious issue with the headers files
but that should not affect you.

> gcc -Wall -pedantic BTRSP.c -o BTRSP -lm -llpsolve55
> -I/usr/local/share/lp_solve/
> 
> In file included from BTRSP.c:10:
> /usr/local/share/lp_solve/lp_lib.h:888: warning: ISO C90 does not
> support 'long long'
> /usr/local/share/lp_solve/lp_lib.h:889: warning: ISO C90 does not
> support 'long long'
> /usr/local/share/lp_solve/lp_lib.h:1403: warning: ISO C90 does not
> support 'long long'

This is a warning not an error, generated because you use -pedantic.
You can safely ignore it.

Cheers,
Bill.