WARNING: [license.mk] Every package should define a LICENSE.
===> Building for ftplibpp-1.0.1nb7
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 making "all" in /Volumes/data/jenkins/workspace/pkgsrc-macos-upstream-arm64/net/ftplibpp
*** Error code 1

Stop.
bmake: stopped making "all" in /Volumes/data/jenkins/workspace/pkgsrc-macos-upstream-arm64/net/ftplibpp