GNU Prolog compiler problem: the order of input files

[Dinghao Wu]

Dear All,

I've encountered the following problem with Gnu Prolog today:

Compile with Gnu Prolog compiler gplc as follow:
    gplc -o foo a.pl b.pl c.pl d.pl e.pl f.pl g.pl

the compiler does not compile the input files in the order that I give. It
will pick say e.pl and compile it first, then it fails because c.pl has a
use of an op which is declared in a.pl. seems very strange! Any thoughts
about this?

Sincerely,
Dinghao