Dear Quinn, I followed the link, and I am still lost. I am not an expert on these matters (old school). I can't understand the narrative given in the link. I could elaborate on my issue further if you are merciful to this lost soul. Thanks

GNU Fortran (GCC) 12.2.0 Copyright (C) 2022 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

cheesedanishboy. I am having the same or similar issue. I am not an expert whatsoever so I will be as descriptive as possible. I got a new mac M2 and I installed XCODDE, XCODE command tools, and installed gfortran using homebrew. I compailed my code and I ran it and I got the following dyld[3244]: dyld cache '(null)' not loaded: syscall to map cache into shared region failed dyld[3244]: Library not loaded: /usr/lib/libSystem.B.dylib Referenced from: /Users/gamalakabani/Applications/TALYS_CODE/talys/bin/talys Reason: tried: '/usr/lib/libSystem.B.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/usr/lib/libSystem.B.dylib' (no such file), '/usr/lib/libSystem.B.dylib' (no such file, no dyld cache), '/usr/local/lib/libSystem.B.dylib' (no such file) ./verify: line 12: 3244 Abort trap: 6 $talys < talys.inp > talys.out I have been looking for the location of libSystem.B.dylib and learned that the new macs are "different." I reinstalled XCODE, command tools, gfortran, etc. to no avail. I just want to fix this issue using laymans terms. Any help will be appreciated. Thanks