7i80 and 7i77

Now I'm some steps ahead. I have installed a RT-preempt System which is rather old but seems to work.
I have made the steps from the first page, but after I type in "make" the terminal wants an argument, that I don't know.

If you have fetched the linuxcnc source and the development tools package:

wiki.linuxcnc.org/cgi-bin/wiki.pl?Instal..._the_source_with_git

You can look at the README file one level above the src directory.
You can simply follow (or just cut and paste) the instructions there.

Heres the quickstart part of the README file

Quickstart:

---

From the top level directory, switch to the source directory:

cd src

In the source directory, build LinuxCNC:

[for rtai]
./autogen.sh
./configure
[or, for PREEMPT-rt or vanilla kernels:]
./autogen.sh
./configure --with-realtime=uspace

make clean
make
sudo make setuid

to run the software go back to the top level directory, and issue:

. scripts/rip-environment
linuxcnc

Sorry, I don't know whats wrong, but I haven't any success from the step with make

uli@uli-desktop:~/linuxcnc-dev/src$ make clean
Makefile:87: Makefile.inc: No such file or directory
Makefile:98: *** Makefile.inc must specify 'BUILD_THREAD_FLAVORS' and other variables. Stop.
uli@uli-desktop:~/linuxcnc-dev/src$

did you run these preliminary steps, and did they succeed?

./autogen.sh
./configure --with-realtime=uspace

I've made all steps from uname until make and it runs always korrekt, at least I've got no error messages.
But make don't run.
Thats the error

uli@uli-desktop:~/linuxcnc-dev/src$ make clean
Makefile:87: Makefile.inc: No such file or directory
Makefile:98: *** Makefile.inc must specify 'BUILD_THREAD_FLAVORS' and other variables. Stop.
uli@uli-desktop:~/linuxcnc-dev/src$

A couple questions:

What Linux distribution are you running?

What does
report when run from the linuxcnc-dev directory?

Also can you try this from the linuxcnc-dev directory and post what it prints here?