Now building will no longer fail if PETSc isn't available, and it correctly
degrades if it cannot find an available MPI. It should now behave similarly as
other optionals, such as SuperLU.
the reason is that the tools for profiling and for coverage analysis
(i.e., gprof and gcov) have trouble with this and crash. if you want
this to be enabled for whatever reason, use the cmake flag
-DSTRIP_DEBUGGING_SYMBOLS=ON or pass configure the
--enable-strip-debug option.
first this makes the test very slow, second (and more importantly) it
makes the test fail on dune master as the header relies on the
presence of the DUNE_GRID_VERSION* macros which are not present at the
configure stage of the build...
as far as I can see, it provided M4 macros for autotools based
projects which wanted to use OPM. I have severe doubts that this was
used by anyone because it most likely does not even work. (e.g. the M4
macros does not seem to specify the ERT and opm-parser prerequisites.)
Note that I'm not 100% sure of the above, so if I'm wrong, state so
loudly and I'll close the PR...
Removes a lot of the conditionals in the makefile. As reflected in the
comments, find_* won't run if the target variable is already set, and appending
empty list elements changes nothing. In order to make reading the file easier
these conditionals have mostly been removed.
Allows a specific PETSC_ROOT to override and replace default search paths. Now,
if PETSC_ROOT is passed and the find_library calls cannot find the libraries,
the makefile will only search in user provided directories.
When building with USE_MPI=ON the FindPetsc now uses the system provided
MPI if available. Falls back to looking for the PETSc provided unimpi for
sequential builds.
Removed the NO_DEFAULT_PATH flag as this really isn't working for most systems
(where PETSc will be installed from a repository and in /usr or /). Path suffix
parameters extended to accept more version-less configs too, to be compatible
with a default PETSc (debian style) install.
The FindPetsc module would check for a PETSC_ROOT and not attempt to look for
mpi and the petsc header if this was not set, which it in most cases won't be.
If the variable is set then the conditional include is redundant, as it will
search the explicitly passed paths first anyways.
this is now done by a config.h macro. The reason is that quite a bit
of code depends on boundary IDs which are only available as an
"experimental" grid extension in recent Dune releases...
With this, any or all of the input vector element may have
an empty jacobian vector. Any element with a non-empty
jacobian vector must still have the same block pattern.
