Hi,

I'm trying to create a makefile for a program.. but I'm getting an
error message when the compiler tries to link everything together..

Here's the make file and file structure:

btw, the code uses log function.. could that be the problem? yet I
dont see that particular error..

Thanks a lot for your help.
-fbm
-----
all: simul

simul: dllist.o random_functions.o event_functions.o main.o
gcc -c  dllist.o random_functions.o event_functions.o main.o -o simul

dllist.o: dllist.c dllist.h
gcc -c  dllist.c

random_functions.o: random_functions.c random_functions.h
gcc -c random_functions.c

event_functions.o: event_functions.c event_functions.h
gcc -c event_functions.c

main.o: main.c main.h
gcc -c main.c

clean:
rm -rf *o simul
-----

Now, the error I get is the following:

$ make clean
rm -rf *o simul

Fernando@FERLAPTOP ~/CSC579/simul1
$ make all
gcc -c  dllist.c
gcc -c random_functions.c
gcc -c event_functions.c
gcc -c main.c
main.c: In function `main':
main.c:7: warning: passing arg 2 of `gettimeofday' from incompatible
pointer type
main.c:99: warning: passing arg 2 of `gettimeofday' from incompatible
pointer type
gcc -c  dllist.o random_functions.o event_functions.o main.o -o simul
gcc: dllist.o: linker input file unused because linking not done
gcc: random_functions.o: linker input file unused because linking not
done
gcc: event_functions.o: linker input file unused because linking not
done
gcc: main.o: linker input file unused because linking not done
gcc: dllist.o: linker input file unused because linking not done


The warnings are fine, since this is cygwin complaining.. it compiles
fine in a linux machine. Now, the dependency relationship of the files
is the following..

-main.c headers:
#include "main.h"

-main.h headers:
#include "dllist.h"
#include "event_functions.h"

-event_functions.c headers:
#include "event_functions.h"

-event_functions.h headers:
#include "dllist.h"
#include "random_functions.h"

- random_functions.c headers
#include "random_functions.h"

-random_functions.h headers
(none)

-dllist.c headers:
#include "dllist.h"

-dllist.h headers:
(none)

[ Post a follow-up to this message ]

"ferbar" <fbarsoba@gmail.com> writes:

> simul: dllist.o random_functions.o event_functions.o main.o
> 	gcc -c  dllist.o random_functions.o event_functions.o main.o -o simul

Read 'info gcc' to find out what '-c' flag means, and to understand
why it should *not* be used on the above line.

Cheers,
--
In order to understand recursion you must first understand recursion.
Remove /-nsp/ for email.

[ Post a follow-up to this message ]

ferbar <fbarsoba@gmail.com> wrote:
> I'm trying to create a makefile for a program.. but I'm getting an
> error message when the compiler tries to link everything together..

> Here's the make file and file structure:

> btw, the code uses log function.. could that be the problem? yet I
> dont see that particular error..

> Thanks a lot for your help.
> -fbm
> -----
> all: simul
[vbcol=seagreen]
> simul: dllist.o random_functions.o event_functions.o main.o
>         gcc -c  dllist.o random_functions.o event_functions.o main.o -o simul[/vbc
ol]
^^

Here you tell gcc _not_ to link. But obviously you want to link here
and not just compile, so remove the '-c' and you should be fine.

Regards, Jens
--
\   Jens Thoms Toerring  ___      jt@toerring.de
\__________________________      http://toerring.de

[ Post a follow-up to this message ]

On Feb 28, 12:02 pm, j...@toerring.de (Jens Thoms Toerring) wrote:
> ferbar <fbars...@gmail.com> wrote: 
>
>               ^^
>
> Here you tell gcc _not_ to link. But obviously you want to link here
> and not just compile, so remove the '-c' and you should be fine.
>
>                                Regards, Jens
> --
>   \   Jens Thoms Toerring  ___      j...@toerring.de
>    \__________________________      http://toerring.de

Silly thing. I am sorry for the dumb error... Thanks a lot!!

[ Post a follow-up to this message ]

"ferbar" <fbarsoba@gmail.com> wrote in message
news:1172681444.077238.232980@v33g2000cwv.googlegroups.com...
> <snip>
>
> Fernando@FERLAPTOP ~/CSC579/simul1
> $ make all
> gcc -c  dllist.c
> gcc -c random_functions.c
> gcc -c event_functions.c
> gcc -c main.c
> main.c: In function `main':
> main.c:7: warning: passing arg 2 of `gettimeofday' from incompatible
> pointer type
> main.c:99: warning: passing arg 2 of `gettimeofday' from incompatible
> pointer type
><snip>>
> The warnings are fine, since this is cygwin complaining.. it compiles
> fine in a linux machine.

The warnings are definitely NOT fine. They are telling you that
your code is messed up. You are passing the wrong type of
variable to gettimeofday.
--
Fred L. Kleinschmidt
Boeing Associate Technical Fellow
Aero Stability and Controls Computing

[ Post a follow-up to this message ]