ext/Fcntl/Fcntl.xs Fcntl extension external subroutines
ext/Fcntl/Makefile.PL Fcntl extension makefile writer
ext/Fcntl/t/fcntl.t See if Fcntl works
+ext/Fcntl/t/mode.t See if S_ISREG() and S_ISDIR() work
ext/Fcntl/t/syslfs.t See if large files work for sysio
ext/File/Glob/bsd_glob.c File::Glob extension run time code
ext/File/Glob/bsd_glob.h File::Glob extension header file