[mpich-discuss] mpich2-1.3 and mpe2-1.3 tests fail with undefined references

[Justin Bronder]

On 12/11/10 16:12 -0600, Anthony Chan wrote:
> 
> The following tests can be avoid if you configure MPE2 or MPICH2
> with --disable-graphics.

Correct, however many users do require this functionality.

> 
> > 
> > Running build runtest for C graphics program...
> > 
> > *** Test C program with the MPI animation library
> > ........................ No.
> > The failed command is :
> > /usr/lib64/mpi/mpi-mpich2/usr/bin/mpicc
> > -I/var/tmp/portage/mpi-mpich2/mpe2-1.3.0/work/mpe2-1.3.0/include -c
> > cpi.c
> > /var/tmp/portage/mpi-mpich2/mpe2-1.3.0/work/mpe2-1.3.0/bin/mpecc
> > -mpianim -Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu -o cpi_anim
> > cpi.o -lm
> > /var/tmp/portage/mpi-mpich2/mpe2-1.3.0/work/mpe2-1.3.0/lib/libampe.a(visual_mess.po):
> > In function `MPI_Init':
> > visual_mess.c:(.text+0x1623): undefined reference to `sincos'
> > /var/tmp/portage/mpi-mpich2/mpe2-1.3.0/work/mpe2-1.3.0/lib/libmpe.a(xcolor.po):
> > In function `XBSetCmapHue':
> > xcolor.c:(.text+0x803): undefined reference to `pow'
> > xcolor.c:(.text+0x810): undefined reference to `trunc'
> > xcolor.c:(.text+0x834): undefined reference to `pow'
> > xcolor.c:(.text+0x841): undefined reference to `trunc'
> > xcolor.c:(.text+0x866): undefined reference to `pow'
> > xcolor.c:(.text+0x873): undefined reference to `trunc'
> > collect2: ld returned 1 exit status
> > make[2]: *** [cpi_anim] Error 1
> 
> The symbols, sincos, pow and trunc, are normally resolved by libm.a/libm.so.
> -lm is used in the link command.  It seems mpicc refuses to link with -lm,
> so my guess is that some of the CFLAGS or LDFLAGS may be incompatible with
> "-lm",
> 
> Can you check if "/usr/lib64/mpi/mpi-mpich2/usr/bin/mpicc -o pow pow.c -lm"
> links with the following program ?
> 
> > cat pow.c
> #include <math.h>
> #include <stdio.h>
> 
> int main( int argc, char *argv[] )
> {
>     double z, x = 2.0, y = 2.0;
>     z = pow(x,y);
>     printf( "%f\n", z);
>     return 0;
> }

This works fine.

jbronder at mejis ~ $ cat <<-EOF > pow.c
#include <math.h>
#include <stdio.h>

int main( int argc, char *argv[] )
{
    double z, x = 2.0, y = 2.0;
    z = pow(x,y);
    printf( "%f\n", z);
    return 0;
}
EOF
jbronder at mejis ~ $ /usr/lib64/mpi/mpi-mpich2/usr/bin/mpicc -o pow pow.c -lm
jbronder at mejis ~ $ ./pow 
4.000000


> 
> 
> > $ mpich2version
> > MPICH2 Version: 1.3
> > MPICH2 Release date: Fri Oct 22 14:50:07 CDT 2010
> > MPICH2 Device: ch3:nemesis
> > MPICH2 configure: --prefix=/usr --build=x86_64-pc-linux-gnu
> > --host=x86_64-pc-linux-gnu --mandir=/usr/share/man
> > --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc
> > --localstatedir=/var/lib --libdir=/usr/lib64/mpi/mpi-mpich2/usr/lib64
> > --prefix=/usr/lib64/mpi/mpi-mpich2/usr
> > --mandir=/usr/lib64/mpi/mpi-mpich2/usr/share/man
> > --infodir=/usr/lib64/mpi/mpi-mpich2/usr/share/info
> > --datadir=/usr/lib64/mpi/mpi-mpich2/usr/share
> > --sysconfdir=/etc/mpi-mpich2 --localstatedir=/var/lib/mpi-mpich2
> > --enable-shared --enable-sharedlibs=gcc --enable-g=all
> > --enable-debuginfo --with-thread-package=pthreads
> > --enable-threads=default --enable-f77 --enable-fc
> > --docdir=/usr/lib64/mpi/mpi-mpich2//usr/share/doc/mpich2-1.3
> > --with-pm=hydra --disable-mpe --with-hwloc-prefix=/usr --enable-romio
> > --enable-cxx
> > MPICH2 CC: x86_64-pc-linux-gnu-gcc -march=core2 -O2 -pipe -msse4.1 -g
> > -O2
> > MPICH2 CXX: x86_64-pc-linux-gnu-g++ -march=core2 -O2 -pipe -msse4.1 -g
> > -O2
> > MPICH2 F77: x86_64-pc-linux-gnu-gfortran -g -O2
> > MPICH2 FC: x86_64-pc-linux-gnu-gfortran -g -O2
> 
> AFAIK, --host and --build should be different (otherwise no point in setting
> these variables).  Setting these 2 flags turns on the cross-compile support
> in mpich2's configury. 

These flags are passed by portage to every autotools package in the portage
tree.  If they are causing an issue specific to mpich2/mpe2 I can disable
them but I'd rather investigate a solution inside of the package's build
system.


-- 
Justin Bronder
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