On Wed, Mar 17, 2021 at 10:45:52PM +0800, Qian Yun wrote:
>
>
> On 3/17/21 10:15 PM, Waldek Hebisch wrote:
> > On Tue, Mar 16, 2021 at 08:55:02PM +0800, Qian Yun wrote:
> > > The patch is here, discussions are welcome. If my idea is accepted,
> > > I can refine the patch a bit more.
> > >
> > > It uses "argv[0]" to determine the path of "FRICASsys" binary,
> > > not very reliable, but portable.
> > >
> > > So the logic is to use env var "FRICAS" first if it exists,
> > > then use "newroot" if it is passed as function argument,
> > > then use "$spadroot" which is build time value, use if it still exists,
> > > then use the parent directory of "FRICASsys", if it contains
> > > "algebra/compress.daase".
> >
> > In general that is very reasonable. I would probably look
> > at "algebra/interp.daase" as it is more fundamental. I am
> > not sure if we always have "argv[0]" (more precisely, if
> > setting argv[0] to null is merely perverse or illegal).
>
> OK, I'll try to generate a proper patch utilizing this idea.
> argv[0] can be modified, that is unfortunate, but it is most
> portable, because it is from C, unlike "$0" from shell.
> Anyway, I'll check existence of "algebra/interp.daase" before use,
> for both "$FRICAS", "$spadroot", and "argv[0]".
IMO, if FRICAS variable is set we should respect it, that is
do not try any fallback.
--
Waldek Hebisch
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