NM72 compilation using MinGW64

I have recently replaced my 32 bit gfortran install with the MinGW64 64bit gfortran on a Dell E6420 laptop with a quad core. I am having difficulty bringing NONMEM and WFN back up on this install. Has anyone any suggestions on making this work? PATH = C:\MinGW64\bin SETUP72 d: C:\nm72 gfortran y ar same rec i The SETUP72 compilation runs without error messages, but the nmf372 control5 test fails with multiple lines of: "temp_dir\prpnm.o:prpnm.f90:(.text+0xXXXX): undefined reference to '___pnm_config_MOD_m_ssae2'" XXXX = hex address that varies with each line. for the record, the 64bit install is working with the USC NPAG and the 'Hello' test. Thoughts and suggestions? Thanks Paul -- Paul R. Hutson, Pharm.D. Associate Professor UW School of Pharmacy T: 608.263.2496 F: 608.265.5421