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Do you use this fortran compiler for other programs? Do you know that it works? NetCDF is not able to use ifort, with the settings you have provided, to build fortran programs on your system: configure:5952: checking if Fortran "byte" is C "short" configure:5962: gcc -c -DpgiFortran -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -m64 -fPIC conftest.c configure:5965: $? = 0 configure:5968: /opt/intel/fc/9.1.036/bin/ifort -g -O2 -mp -recursive -c conftestf.f configure:5971: $? = 0 configure:5974: /opt/intel/fc/9.1.036/bin/ifort -o conftest -g -O2 -mp -recursive conftestf.o conftest.o ld: warning: i386:x86-64 architecture of input file `conftest.o' is incompatible with i386 output You have some 64 vs. 32 bit issue here. Until ifort can build programs that work on your machine, netCDF can't use it! Thanks, Ed Ticket Details =================== Ticket ID: SET-499655 Department: Support netCDF Priority: Normal Status: Open