This is probably due to using:
cgns_f.F90 instead of $<TARGET_OBJECTS:cgns_f2c> in
This can be worked around by building with "-j1".
On which OS/System is the build being done ? Compiler name and version ?
With too few information this can’t be considered a bug.
I can’t reproduce error message when I do:
on linux64/version 4.19 with gcc 8.3.0