Am 28.02.2021 um 20:16 schrieb Riccardo (Jack) Lucchetti:
 On Sun, 28 Feb 2021, Allin Cottrell wrote:
>> Actually, it would be nice to have a graphical map with the function
>> calling graph. I'm sure there exist sophisticated automatic tools for
>> that, any recommendation?
>
> Yeah, that would be nice. I've seen it done for lapack but I haven't
> looked into how it's done.
 I remember I did that for libgretl a while back using some tool I can't
 recall now. IIRC, the output picture was so huge to be useless by all
 practical purposes. But it was a long time ago, I don't remember very well. 
There's actually a list of this on Wikipedia:
https://en.wikipedia.org/wiki/Call_graph#Static_for_getting_call_graphs_w...:
Does that ring any bells as to which tool it was?
cheers
sven