Flymake backends problem

[Ergus]

Hi:

I am trying to use flymake with a simple C++ file, but there are not
corrections/diagnostics.

in the *Flymake log* there is:

Warning [flymake test.cpp]: Disabling backend flymake-proc-legacy-flymake 
because (error Can???t find a suitable init function)
Warning [flymake test.cpp]: Disabling backend flymake-cc because make: *** No 
rule to make target 'check-syntax'.  Stop.
Warning [flymake test.cpp]: Disabling backend flymake-proc-legacy-flymake 
because (error Can???t find a suitable init function)
Warning [flymake test.cpp]: Disabling backend flymake-cc because make: *** No 
rule to make target 'check-syntax'.  Stop.

Any help here please?