undefined reference to

[Satish Balay]

What do you have for:

nm -ao mvec.o 

Also - sugest using the attached makefile.

Satish


On Sun, 19 Aug 2007, Waad Subber wrote:

> Thanks for response
> I removed the lines and I got the following output after executing the make file:
> 
> gfortran -c  -fPIC -Wall -Wno-unused-variable -g   -I/home/waad/soft/petsc-2.3.3-p4 -I/home/waad/soft/petsc-2.3.3-p4/bmake/linux-gnu-c-debug -I/home/waad/soft/petsc-2.3.3-p4/include  -I/home/waad/mpich2-install/include        -o pro.o pro.F
> gfortran -fPIC -Wall -Wno-unused-variable -g   -o exe pro.o    -Wl,-rpath,/home/waad/soft/petsc-2.3.3-p4/lib/linux-gnu-c-debug -L/home/waad/soft/petsc-2.3.3-p4/lib/linux-gnu-c-debug -lpetscts -lpetscsnes -lpetscksp -lpetscdm -lpetscmat -lpetscvec -lpetsc        -L/usr/lib64 -lX11 -Wl,-rpath,/home/waad/mpich2-install/lib -L/home/waad/mpich2-install/lib -lmpich -lpthread -llapack -lblas -lm -Wl,-rpath,/usr/lib/gcc/x86_64-redhat-linux/4.1.2 -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2 -Wl,-rpath,/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64 -Wl,-rpath,/lib/../lib64 -L/lib/../lib64 -Wl,-rpath,/usr/lib/../lib64 -L/usr/lib/../lib64 -ldl -lgcc_s -lgfortranbegin -lgfortran -lm -Wl,-rpath,/usr/lib/gcc/x86_64-redhat-linux/4.1.2 -Wl,-rpath,/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64 -Wl,-rpath,/lib/../lib64 -Wl,-rpath,/usr/lib/../lib64 -lm  -Wl,-rpath,/usr/lib/gcc/x86_64-redhat-linux/4.1.2
>  -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2 -Wl,-rpath,/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64 -Wl,-rpath,/lib/../lib64 -L/lib/../lib64 -Wl,-rpath,/usr/lib/../lib64 -L/usr/lib/../lib64 -ldl -lgcc_s -ldl 
> pro.o: In function `MAIN__':
> /home/waad/petsc_test/example1/solvetest/pro.F:38: undefined reference to `mvec_'
> collect2: ld returned 1 exit status
> make: [exe] Error 1 (ignored)
> /bin/rm -f -f pro.o
> 
>  
> 
> Barry Smith <bsmith at mcs.anl.gov> wrote: 
> 
>  Not sure what the problem is, but 
> you should remove the lines
> > mvec.o: mvec.F                                                                                                        
> >     mpif90 -c mvec.F  
> you do not need them.
> 
>   Please send ALL the output when you run make exe after the change.
> 
>    Barry
> 
> 
> 
> On Sun, 19 Aug 2007, Waad Subber wrote:
> 
> > Hello everyone
> > 
> > I am calling a subroutine from my main program, and when I compile the code I get an error message  (undefined reference to 'mvec_') referring to the call statement in the main program. I have defined the subroutine as external in the main program using (external mvec), but the problem still unsolved ..! 
> > 
> > The makefile looks like:
> > 
> > OBJS= mvec.o
> > CFLAGS        = 
> > FFLAGS        = 
> > CPPFLAGS        =
> > FPPFLAGS        =
> > 
> > 
> > include ${PETSC_DIR}/bmake/common/base
> > 
> > all: $(OBJS)
> > 
> > mvec.o: mvec.F
> >     mpif90 -c mvec.F
> > 
> > exe: pro.o $(OBJS) 
> >     -${FLINKER} -o exe pro.o $(OBJS)  ${PETSC_LIB}
> >      ${RM} -f pro.o
> > 
> > include ${PETSC_DIR}/bmake/common/test
> > 
> > Can any one help me with this issue please ...!
> > 
> > Thanks
> > 
> > Waad
> > 
> >        
> > ---------------------------------
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> 
> 
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