Emacs flycheck add include directory, no flycheck-gcc-*

Question

emacs version:

GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7) of 2014-03-07 on lamiak, modified by Debian

M-x flycheck version:

Flycheck version: 0.25alpha (package: 20150821.47)

M-x flycheck-verify-setup:

Syntax checkers for buffer file.c in c-mode:

c/c++-clang
- predicate: nil
- executable: Not found

c/c++-gcc
- predicate: t
- executable: Found at /usr/bin/gcc

c/c++-cppcheck
- predicate: t
- executable: Found at /usr/bin/cppcheck

Flycheck Mode is enabled.

M-x flycheck-gcc-include

[NO MATCH]

How can I enable flycheck-gcc-* commands to define inc dirs?

Answer 1

flycheck-gcc-include-path is a variable, not a command. You can change it globally with M-x customize-variable RET flycheck-gcc-include-path, or per file or directory with File Variables and Directory Variables respectively.