gcc/gfortran can't find system library in latest Xcode/Mojave

David Nicholls david.nicholls at anu.edu.au
Thu Oct 10 22:20:46 UTC 2019

Something Apple did in either the latest update to Mojave or the latest Xcode breaks gfortran's (8.3.0) ability to find the system library. I updated to the latest macports recently, too.  gfortran 8.3.0 that compiled code easily under previous versions of Mojave/Xcode/macports now throws an error:

M5118 error on build:
ld: library not found for -lSystem
collect2: error: ld returned 1 exit status
make[1]: *** [../lab/map51] Error 1
make: *** [build] Error 2 with gfortran 8.3.0

Does anyone know anything about this?


David C Nicholls,
Research School of Astronomy & Astrophysics
Australian National University

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