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From: Ergus via help-gnu-emacs <help-gnu-emacs@gnu.org>
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Subject: Flymake backends problem
Date: Wed, 26 Jun 2019 18:19:42 +0200
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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?