(self, hname: str, prefix: str, env: 'Environment', *,
                   extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]] = None,
                   dependencies: T.Optional[T.List['Dependency']] = None,
                   disable_cache: bool = False)
Check that header is exists.

        This check will return true if the file exists, even if it contains:

        ```c
        # error "You thought you could use this, LOLZ!"
        ```

        Use check_header if your header only works in some cases.

        Returns a two item tuple of bools. The first bool is whether the
        check succeeded, the second is whether the result was cached (True)
        or run fresh (False).
Check that header is exists.
Check that header is exists .
def has_header(self, hname: str, prefix: str, env: 'Environment', *,
                   extra_args: T.Union[None, T.List[str], T.Callable[[CompileCheckMode], T.List[str]]] = None,
                   dependencies: T.Optional[T.List['Dependency']] = None,
                   disable_cache: bool = False) -> T.Tuple[bool, bool]:
        """Check that header is exists.

        This check will return true if the file exists, even if it contains:

        ```c
        # error "You thought you could use this, LOLZ!"
        ```

        Use check_header if your header only works in some cases.

        Returns a two item tuple of bools. The first bool is whether the
        check succeeded, the second is whether the result was cached (True)
        or run fresh (False).
        """
        raise EnvironmentException('Language %s does not support header checks.' % self.get_display_language())
def has_header ( self , hname : str , prefix : str , env : 'Environment' , * , extra_args : T . Union [ None , T . List [ str ] , T . Callable [ [ CompileCheckMode ] , T . List [ str ] ] ] = None , dependencies : T . Optional [ T . List [ 'Dependency' ] ] = None , disable_cache : bool = False ) -> T . Tuple [ bool , bool ] : raise EnvironmentException ( 'Language %s does not support header checks.' % self . get_display_language ( ) )