Unable to compile deal ii with LAPACK provided by cray-libsci

[BenDavisonPetch]

I'm trying to compile deal ii on ARCHER2 with LAPACK as a dependency. LAPACK is provided on the system via the cray-libsci module, but even with that module loaded deal ii cannot find LAPACK, even when given the libsci directory.

Logs are below.

CMakeError.log
CMakeOutput.log

The relevant cmake flags are -DWITH_LAPACK=ON -DLAPACK_DIR=${CRAY_LIBSCI_PREFIX_DIR}/lib
Cmake is unable to find LAPACK no matter what directory I put into LAPACK_DIR (whether it's the include directory, the parent directory, or lib). It is also unable to find LAPACK if I don't specify any directory and let it search. I imagine it's because the shared library objects in cray-libsci are not named what they're normally named in a standard LAPACK installation, even though the headers are the same.

[Rombur]

You need to point to the library yourself. Something like

-DBLAS_LIBRARIES=${CRAY_LIBSCI_PREFIX_DIR}/lib/libsci_gnu.a -DLAPACK_LIBRARIES=${CRAY_LIBSCI_PREFIX_DIR}/lib/libsci_gnu.a

should work.

[BenDavisonPetch]

I have just tried this and I am getting the same error, with all of the library objects available

[Rombur]

Did you try out in a clean directory?

[jpthiele]

deal.II is missing the header file(s), the correct option is in fact the parent folder, i.e.

-DLAPACK_DIR=${CRAY_LIBSCI_PREFIX_DIR}

You could retry it on a clean build directory together with

-DLAPACK_LIBRARIES=${CRAY_LIBSCI_PREFIX_DIR}/lib/libsci_gnu.a

Then, deal.II should be able to figure out the library to use.

However, for the AMD optimized libflame which produces lib/libflame.a
I did not have to specify the second option, so maybe just try the first option on a clean build.