After running installworld, non-root users cannot properly read symbolic links from /usr/lib and causing link error like not finding -lgcc_s library. Root user can link a program without a problem while all others fails to link. I have / and /usr separate mount points. After each installworld, I need to run the following to adjust symbolic links: cd /usr/lib ls -l *.so | nawk '$NF ~ /..\/..\/lib/{cmd="ln -sf " substr($NF, 6) " " $(NF-2);system(cmd)}' These are the commands to expose errors and comparison between a root user and non-root user. % is command as my own user account. $ is the root user. % uname -a FreeBSD XXX 12.2-BETA2 FreeBSD 12.2-BETA2 #348 r365986M: Sat Sep 19 14:36:23 EDT 2020 hiro@XXX:/usr/obj/usr/src/i386.i386/sys/ZFS i386 % cd /tmp % cat main.c int main() { return 0; } % cc main.c ld: error: unable to find library -lgcc_s ld: error: unable to find library -lgcc_s cc: error: linker command failed with exit code 1 (use -v to see invocation) % c++ main.c c++: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is deprecated [-Wdeprecated] ld: error: cannot open /usr/lib/libcxxrt.so: Permission denied ld: error: unable to find library -lgcc_s ld: error: unable to find library -lgcc_s c++: error: linker command failed with exit code 1 (use -v to see invocation) % ls -lsd /usr/lib/libcxxrt.so 0 lrwxr-xr-x 1 root wheel 23 Sep 21 23:27 /usr/lib/libcxxrt.so -> ../../lib/libcxxrt.so.1 % ls -lsd /lib/libcxxrt.so.1 90 -r--r--r-- 1 root wheel 90644 Sep 21 23:27 /lib/libcxxrt.so.1 % mount /dev/ada0s4a on / (ufs, local, soft-updates) devfs on /dev (devfs, local, multilabel) /dev/ada0s4d on /usr (ufs, local, noatime, soft-updates) /dev/ada0s4e on /usr/local (ufs, local, noatime, soft-updates) $ cc main.c $ ./a.out $ I had run the re-link program from comment above. % ls -lsd /usr/lib/libcxxrt.so /lib/libcxxrt.so.1 90 -r--r--r-- 1 root wheel 90644 Sep 21 23:27 /lib/libcxxrt.so.1 0 lrwxr-xr-x 1 root wheel 23 Sep 21 23:27 /usr/lib/libcxxrt.so -> ../../lib/libcxxrt.so.1 % ls -lsd /usr/lib/libcxxrt.so /lib/libcxxrt.so.1 90 -r--r--r-- 1 root wheel 90644 Sep 21 23:27 /lib/libcxxrt.so.1 0 lrwxr-xr-x 1 root wheel 18 Sep 22 22:58 /usr/lib/libcxxrt.so -> /lib/libcxxrt.so.1 % cc main.c % ./a.out %