/usr/share/fpcsrc/2.6.2/rtl/netbsd/ is in fpc-source-2.6.2 2.6.2-8.
This file is owned by root:root, with mode 0o755.
..
/usr/share/fpcsrc/2.6.2/rtl/netbsd/Makefile.fpc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/errno.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/errnostr.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/i386/
/usr/share/fpcsrc/2.6.2/rtl/netbsd/i386/bsyscall.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/i386/sighnd.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/pmutext.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/powerpc/
/usr/share/fpcsrc/2.6.2/rtl/netbsd/powerpc/bsyscall.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/powerpc/sighnd.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/pthread.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/ptypes.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/signal.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/syscalls.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/sysconst.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/sysctlh.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/sysnr.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/sysofft.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/systypes.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/termio.pp
/usr/share/fpcsrc/2.6.2/rtl/netbsd/termios.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/termiosproc.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/unixsock.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/unxconst.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/unxfunc.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/unxsockh.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/unxsysc.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/x86_64/
/usr/share/fpcsrc/2.6.2/rtl/netbsd/x86_64/bsyscall.inc
/usr/share/fpcsrc/2.6.2/rtl/netbsd/x86_64/sighnd.inc