Re: which symbols came from which library?
On Thu, 10 Dec 2020, Michael Hennebry wrote:
On Thu, 10 Dec 2020, Samuel Sieb wrote:
> On 12/10/20 7:47 PM, Michael Hennebry wrote:
>> Using gcc 10.2.1 -g -O, I compiled and linkeds
>> a program using multiple libraries.
>> Some symbols are defined by more than one library.
>
> That sounds like a really bad situation.
One library is supposed to be a new improved
version of parts of the other library.
libraries.
My understanding is that when shared libraries are involved,
the rules can get complicated.
That I'm a newbie with these libraries does not help either.
>> I would like to discover which symbols came from which library.
>> What, if anything, is the incantation to do that?
>
> Your question is not very clear. If you want to see the symbols in a
> particular library, I think "nm" is the tool for that.
nm lists dgesv_ , the symbol that should bring in these libraries,
as undefined (U).
There is no other entry for it.
Symbols that dgesv_ should bring in are not mentioned at all.
Is this part of shared library magic?
If symbol fred is defined in library G as well as library in B,
I'd like to know which symbol my executable picked up.
nm does not do that.
--
Michael hennebry(a)web.cs.ndsu.NoDak.edu
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