Hello Guiyuan,
* Guiyuan Lei wrote on Wed, Sep 13, 2006 at 02:07:49PM CEST:
>
> g++ -c gibbsreg.cpp -I/usr/include
> mpif77 -llammpi++ -lstdc++ gibbsreg.o -lblas -llapack -lg2c -lm
>
> When I use "locate lammpi++", I got
> /usr/lib64/liblammpi++.a
> /usr/lib64/liblammpi++.la
So effectively you only have the static liblammpi++.a installed (and the
libtool wrapper).
> When use above compile command, in new cluster, I got the following error
> message:
> gibbsreg.o(.gnu.linkonce.r._ZTVN3MPI2OpE+0x20): undefined reference to
> `MPI::Op ::Init(void (*)(void const*, void*, int, MPI::Datatype const&),
> bool)'
The fix is to reorder the command line, so that all libraries appear
after all objects that need their symbols, also I think you should
reorder libblas to appear after liblapack since the latter needs the
former (and unless you have shared libraries for them installed, that
will give you further errors then).
mpif77 gibbsreg.o -llammpi++ -lstdc++ -llapack -lblas -lg2c -lm
Cheers,
Ralf
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