[mpich-discuss] undefined reference to `__isoc99_sscanf'

[Anthony Chan]

We don't recommend user to copy/move the installed libmpich.a.
The proper way is to recompile/relink your application with
mpif90 that you just built.  Given the way mpich2 is structured,
e.g. libmpich.a depends other supporting libraries in mpich2's libdir,
moving libmpich.a directly does not sound like a policy .... e.g.
Making your app to use newer version of MPICH2 or other MPI implementations
difficult.

A.Chan

----- Original Message -----
> Andy,
> 
> You spotted the problem. I was using a version of the library that was
> built on a
> different Linux system.
> I replaced libmpich.a in my working directory with the file libmpich.a
> that was built on the Ubuntu box that I
> am working on, and it now runs ok.
> 
> Thank you *very* much for your help.
> 
> -- Alison
> 
> On Fri, 12 Nov 2010 11:26:28 -0600 (CST), "Anthony Chan"
> <chan at mcs.anl.gov> said:
> >
> > Here is what your mpif90 links to
> >
> > % mpif90 -compile-info
> > ifort -I/home/aboeckma/mpi-install/include -I/home/aboeckma/mpi-
> > install/include -L/home/aboeckma/mpi-install/lib
> > -L/home/aboeckma/mpi-
> > install/lib -lmpichf90 -lmpichf90 -lmpich -lopa -lpthread -lrt
> >
> > The mpich2 install dir is /home/aboeckma/mpi-install
> >
> > But your original link error is
> > /c/nm72ifort/mpi/mpi_lini/libmpich.a(argstr.o): In function
> > `MPIU_Str_get_binary_arg': argstr.c:(.text+0xc53):
> > undefined reference to `__isoc99_sscanf'
> >
> > /c/nm72ifort/mpi/mpi_lini is some other mpich2 installation ?
> > or you didn't use mpif90 to link your app ?
> >
> > A.Chan
> >
> >
> >
> > ----- Original Message -----
> > > Yes this works:
> > >
> > > % pwd
> > > /home/aboeckma/mpich2-1.2.1p1/examples/f90
> > >
> > > % mpif90 pi3f90.f90
> > >
> > > % a.out
> > > Process 0 of 1 is alive
> > > Enter the number of intervals: (0 quits)
> > > 0
> > > %
> > >
> > > On Fri, 12 Nov 2010 11:08:03 -0600 (CST), "Anthony Chan"
> > > <chan at mcs.anl.gov> said:
> > > >
> > > > Sure.
> > > >
> > > > Can you use mpif90 to compile/link pif90.f90 which is in
> > > > mpich2-xxx/examples/f90 ?
> > > >
> > > > A.Chan
> > > >
> > > > ----- Original Message -----
> > > > > Andy, I am replying directly to you. I am new to this
> > > > > discussion
> > > > > list
> > > > > and don't know what the custom is.
> > > > >
> > > > > % mpif90 -compile-info
> > > > > ifort -I/home/aboeckma/mpi-install/include
> > > > > -I/home/aboeckma/mpi-
> > > > > install/include -L/home/aboeckma/mpi-install/lib
> > > > > -L/home/aboeckma/mpi-
> > > > > install/lib -lmpichf90 -lmpichf90 -lmpich -lopa -lpthread -lrt
> > > > >
> > > > >
> > > > > % ifort -V
> > > > > Intel(R) Fortran Compiler for applications running on IA-32,
> > > > > Version
> > > > > 10.0 Build 20070426 Package ID: l_fc_p_10.0.023 Copyright (C)
> > > > > 1985-
> > > > > 2007 Intel Corporation. All rights reserved.
> > > > >
> > > > > % cat t.f
> > > > > program t
> > > > > print *,'hi'
> > > > > end
> > > > >
> > > > > % mpif90 t.f
> > > > > % a.out
> > > > > hi
> > > > >
> > > > > On Fri, 12 Nov 2010 10:50:30 -0600 (CST), "Anthony Chan"
> > > > > <chan at mcs.anl.gov> said:
> > > > > >
> > > > > > What version of ifort that you are using ? BTW, can you use
> > > > > > ifort to
> > > > > > compile/link a simple fortran program ?
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > > I use mpif90 to link the execuatable. This is when the
> > > > > > > error
> > > > > > > occurs.
> > > > > > >
> > > > > > > If the executable is built, it is launched with mpirun on
> > > > > > > the
> > > > > > > Mac
> > > > > > >
> > > > > > >
> > > > > > > On Fri, 12 Nov 2010 10:14:34 -0600 (CST), "Anthony Chan"
> > > > > > > <chan at mcs.anl.gov> said:
> > > > > > > >
> > > > > > > > How do you link and run your program ? did you use MPI
> > > > > > > > wrappers(mpif90) in linking and mpiexec to launch your
> > > > > > > > app ?
> > > > > > > >
> > > > > > > > A.Chan
> > > > > > > >
> > > > > > > > ----- Original Message -----
> > > > > > > > > I am installing mpich2-1.2.1p1 on Ubuntu 7.04 - the
> > > > > > > > > Feisty
> > > > > > > > > Fawn
> > > > > > > > > (This is a virtual machine running on a dual core Mac,
> > > > > > > > > using
> > > > > > > > > OS
> > > > > > > > > 10.5.8)It installed perfectly on the native Mac.
> > > > > > > > >
> > > > > > > > > However when I try to run the same problem on Ubuntu,
> > > > > > > > > there is
> > > > > > > > > a
> > > > > > > > > message when the MPI library is linked with my code:
> > > > > > > > >
> > > > > > > > > /c/nm72ifort/mpi/mpi_lini/libmpich.a(argstr.o): In
> > > > > > > > > function
> > > > > > > > > `MPIU_Str_get_binary_arg': argstr.c:(.text+0xc53):
> > > > > > > > > undefined
> > > > > > > > > reference to `__isoc99_sscanf'
> > > > > > > > >
> > > > > > > > > There are no error messages during the make:
> > > > > > > > > m.txt: CC
> > > > > > > > > /home/aboeckma/mpich2-1.2.1p1/src/util/mem/argstr.c
> > > > > > > > > m.txt: AR cr ../../../lib/libmpich.a trmem.o
> > > > > > > > > handlemem.o
> > > > > > > > >   safestr.o argstr.o
> > > > > > > > >
> > > > > > > > > The compiler is ifort, but it also happens with
> > > > > > > > > gfortran.
> > > > > > > > > Is
> > > > > > > > > there a system library that is needed ?
> > > > > > > > > --
> > > > > > > > > Alison Boeckmann alisonboeckmann at fastmail.fm
> > > > > > > > >
> > > > > > > > > _______________________________________________
> > > > > > > > > mpich-discuss mailing list mpich-discuss at mcs.anl.gov
> > > > > > > > > https://lists.mcs.anl.gov/mailman/listinfo/mpich-discuss
> > > > > > > --
> > > > > > > Alison Boeckmann alisonboeckmann at fastmail.fm
> > > > > --
> > > > > Alison Boeckmann
> > > > > alisonboeckmann at fastmail.fm
> > > --
> > > Alison Boeckmann
> > > alisonboeckmann at fastmail.fm
> --
> Alison Boeckmann
> alisonboeckmann at fastmail.fm