Dera Luca, Thanks very much for the guidance. Just to make sure, since I also need some other libraries such as Trilinos, do I need to rebuild deal.II with all that I anticipate might be needed? Thank you.
On Wed, Jan 6, 2021 at 1:12 PM luca.heltai <[email protected]> wrote: > Dear Behrooz, > > > I already have 9.0 installed via SPACK, through which all the required > external libraries are installed and consequently recognized by deal.II. I > recently tried to migrate to version 9.2 (while keeping 9.0). It was > installed through regular procedures described in the README file. > > you can do this by simply updating spack itself, and running > > spack install [email protected] > > > However the new version doesn't recognize libraries that are already > available on the machine. It was tested through step-18 and as an instance > one particular error I received was "‘PETScWrappers’ does not name a type". > > I didn't compile deal.II with PETSc ON during library installation. > > This is the issue. You have to compile the library with PETSC on. The > deal.II library has several wrappers (like the ones in the namespace > PETScWrappers) which are compiled once, and included in the library, so > that you don’t have to recompile them everytime you compile your > application. > > This, however, implies that you have to let deal.II discover all the > libraries you think you will be using during the compilation of deal.II > itself. > > It is not enough to specify the external libraries when you compile an > example, since in this case you would not have the compiled wrappers, but > just the header files, which contain typdef guards around all definitions > that require external libraries that were not discovered during the build > of deal.II itself. > > > However in step-18 configuration, I passed following arguments to cmake: > > -DDEAL_II_WITH_PETSC=ON > -DPETSC_DIR=/home/behrooz/Spack/opt/spack/linux-ubuntu18.04-x86_64/gcc-7.3.0/petsc-3.10.3-4w55lkacqsfyidojpbouvm6gmadidcnn > -DPETSC_ARCH=arch-linux2-c-opt (a Python file!). I received > "Manually-specified variables were not used by the project" (Apparently not > updated). > > Additionally I added the PETSC_DIR to the bashrc file. Besides, though > not a proper way, having deal.IIcmake.config files of 9.0, I even > manipulated correspondings in 9.2 (were then returned to original state). > The compiler was also changed. > > But, none of them worked! Can anyone kindly point out the > problem/solution? > > Rebuild the library, either using spack directly (after updating spack > itself, which know knows about 9.2.0), or manually, by specifying > -DDEAL_II_WITH_PETSC=ON -DPETSC_DIR=/path/to/petsc. > > After this, PETSc will be available. > > Best, > Luca. > > -- > The deal.II project is located at http://www.dealii.org/ > For mailing list/forum options, see > https://groups.google.com/d/forum/dealii?hl=en > --- > You received this message because you are subscribed to the Google Groups > "deal.II User Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/dealii/D1079FEE-8F37-4AC2-989E-397F063F9077%40gmail.com > . > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAPPKNqY7ym3QwKud9XWWh3SWUK-Qsx2PQ9%2BMUZmnzgn9X_z-uQ%40mail.gmail.com.
