[squid-users] websockets through Squid

[Vieri]

OK, so I'm now trying to compile Squid 5 instead of backporting to V 4, but I'm getting this silly error:

cp ../../src/tests/stub_fd.cc tests/stub_fd.cc
cp: cannot create regular file 'tests/stub_fd.cc': No such file or directory
make[3]: *** [Makefile:1452: tests/stub_fd.cc] Error 1

I guess it may be because the script is not in the right subdir.

Is this  a known issue?
Can I simply disable building the tests?