=> Bootstrap dependency digest>=20010302: found digest-20190127
WARNING: [license.mk] Every package should define a LICENSE.
===> Skipping vulnerability checks.
WARNING: No /opt/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/opt/pkg/sbin/pkg_admin -K /opt/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Building for ftplibpp-1.0.1nb6
clang -c -Wall  -I.   -fPIC -D_REENTRANT ftplib.cpp -o ftplib.o
clang -shared -Wl,-soname,libftp.so.1 -lc -o libftp.so.1.0 ftplib.o
ld: unknown option: -soname
clang: error: linker command failed with exit code 1 (use -v to see invocation)
gmake: *** [Makefile:54: libftp.so.1.0] Error 1
*** Error code 2

Stop.
bmake[1]: stopped in /opt/pkgsrc/net/ftplibpp
*** Error code 1

Stop.
bmake: stopped in /opt/pkgsrc/net/ftplibpp