Dear Sirs, thanks for your kind rerply. Indeed the $(MKLROOT) fixed the problem.
Ad: "You don't need to specify the full path of a library when you have MKLROOT defined. " Wien2k offers the default R_LIB (LAPACK+BLAS): -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core I specified, based on the MKL link line tool, https://www.intel.com/content/www/us/en/developer/tools/oneapi/onemkl-link-line-advisor.html : $(MKLROOT)/lib/intel64/libmkl_blas95_lp64.a $(MKLROOT)/lib/intel64/libmkl_lapack95_lp64.a -L$(MKLROOT)/lib/intel64 -lmkl_scalapack_lp64 -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core -lmkl_blacs_intelmpi_lp64 -liomp5 -lpthread -lm -ldl I put there scalapack also, intel_mpi and all other stuff, to be on the right side of the barricade. So you say the Wien2k installer finds everythink rergarding MKL ? I may try later... Best, Miro
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