Re: LINKING ORDER

Re: LINKING ORDER

[Bjorn R. Jensen]

Hi Naveen,

 The linker goes through the object files in the specified order
looking for unresolved symbols, all other symbols are ignored, even
if the symbols are needed later. This applies to symbols defined in
libraries as well.
 If this was not done, the linker would have to keep track of huge
numbers of symbols most likely not needed at all....

Yours sincerely,

Bjorn

On Thu, 03 Oct 2002 03:31:16 +0000, "Naveen Malik"
<maliknaveen@hotmail.com> said:
> Hi Everybody,
> 
> I have to compile and link 5 C files.
> 
> Let us assume that the five files are A, B, C, D and E.
> 
> Now the problem is does it really matters as how I give their linking
> order 
> say A to E or E to A or any other combination. And if yes, then how?
> 
> Please guide me.
> 
> Regards
> 
> Naveen Malik
> 
> _________________________________________________________________
> Chat with friends online, try MSN Messenger: http://messenger.msn.com
> 
> 

Re: LINKING ORDER

[Eljay Love-Jensen]

If A uses stuff in B, then A must appear before B.

If B uses stuff in C, then B must appear before C.

If D and E use stuff in A, B and C, then D and E must appear before A, B and C.

If D uses stuff in E, and E uses stuff in D, then D must appear before E, 
and E must appear before D.  (I assume you now have a confused expression.)

Given all the above,
g++ D.o E.o D.o A.o B.o C.o

Notice that D.o appears twice, to satisfy the D-E co-dependency.  Generally 
considered Bad Form, and a Bad Thing.  Comment that co-dependency in the 
make file, lest the poor maintenance programmer (aka "code janitor") make a 
faux edit.

Voila.

--Eljay

LINKING ORDER

[Naveen Malik]

Hi Everybody,

I have to compile and link 5 C files.

Let us assume that the five files are A, B, C, D and E.

Now the problem is does it really matters as how I give their linking order 
say A to E or E to A or any other combination. And if yes, then how?

Please guide me.

Regards

Naveen Malik

_________________________________________________________________
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