Hi Oliver, I'm sorry for letting this bug report get past me. I just never saw it. In any event, please see below for my comments.
On Thu, Aug 12, 2010 at 05:45:54PM +0200, Oliver Sander wrote: > Package: coinor-libipopt-dev > Version: 3.8.3-2 > Severity: normal > > I have been using a hand-compiled libipopt with a C++ program > for a while. The linear solver for ipopt was ma27 (fortran). The > C++ program was purely sequential, hence there was no need > to mention or have MPI. > > Now I want to build the same program with libipopt from the new > package (thanks for packaging, by the way!). As the linker flags > I use > -lipopt -llapack -lblas -lgfortran > which is what worked before. (As ma27 is not used anymore I guess > the -lgfortran is obsolete.) The program compiles and links, > however when running it I get > symbol lookup error: /usr/lib/libipopt.so.0: undefined symbol: MPI_Init > on the first call to libipopt, and the program aborts. > I think that this might be the same problem reported in #592324. > Trying to be smart, I add -lmpi to me list of linker flags. Then I > get the run time error > [haile:4637] *** An error occurred in MPI_Comm_rank > [haile:4637] *** on communicator MPI_COMM_WORLD > [haile:4637] *** MPI_ERR_COMM: invalid communicator > [haile:4637] *** MPI_ERRORS_ARE_FATAL (your MPI job will now abort) > > Is this a bug or am I using the wrong flags? How can I find out what > the correct linker flags are? The ipopt manual mentions a file > ipopt_addlibs_cpp.txt with this information, but it is not contained > in the Debian package. > Please try installing libmumps-4.9.2 and libmumps-seq-4.9.2, then try your application again. Please try both with and without -lmpi. It should work without, but I am curious as to what happens in either case. > I guess the most elegant solution would be to use pkg-config. > Support for pkg-config seems to have entered the ipopt code > shortly after the 3.8.3 release. Maybe it can be backported? > I am working on the new upstream version. I will have a look at this as part of getting that packaged. Regards, -Roberto -- Roberto C. Sánchez http://people.connexer.com/~roberto http://www.connexer.com
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