def check_func(
        self,
        func,
        headers=None,
        include_dirs=None,
        libraries=None,
        library_dirs=None,
        decl=0,
        call=0,
    ):
        """Determine if function 'func' is available by constructing a
        source file that refers to 'func', and compiles and links it.
        If everything succeeds, returns true; otherwise returns false.

        The constructed source file starts out by including the header
        files listed in 'headers'.  If 'decl' is true, it then declares
        'func' (as "int func()"); you probably shouldn't supply 'headers'
        and set 'decl' true in the same call, or you might get errors about
        a conflicting declarations for 'func'.  Finally, the constructed
        'main()' function either references 'func' or (if 'call' is true)
        calls it.  'libraries' and 'library_dirs' are used when
        linking.
        """
        self._check_compiler()
        body = []
        if decl:
            body.append("int %s ();" % func)
        body.append("int main () {")
        if call:
            body.append("  %s();" % func)
        else:
            body.append("  %s;" % func)
        body.append("}")
        body = "\n".join(body) + "\n"

        return self.try_link(body, headers, include_dirs, libraries, library_dirs)
Determine if function 'func' is available by constructing a
        source file that refers to 'func', and compiles and links it.
        If everything succeeds, returns true; otherwise returns false.

        The constructed source file starts out by including the header
        files listed in 'headers'.  If 'decl' is true, it then declares
        'func' (as "int func()"); you probably shouldn't supply 'headers'
        and set 'decl' true in the same call, or you might get errors about
        a conflicting declarations for 'func'.  Finally, the constructed
        'main()' function either references 'func' or (if 'call' is true)
        calls it.  'libraries' and 'library_dirs' are used when
        linking.
        
product/gradle-plugin/src/main/python/setuptools/_distutils/command/config.py