https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63685
Bug ID: 63685 Summary: kern.osversion bug shows up with GFORTRAN as well as GCC Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: critical Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: cloverm at leidos dot com I used the fortran compiler, 4.9.0, with the new Mac OS (Yosemite, 10.10), and got the same error message others got from the gcc compiler: gfortran: warning: couldn’t understand kern.osversion ‘14.0.0 There doesn't seem to be a way to work around this, so my laptop is currently useless for compiling my code.