kconfig: add 'info', 'warning-if', and 'error-if' built-in functions (1d6272e6) · Commits · 戴 / test

Syntax: $(info,<text>) $(warning-if,<condition>,<text>) $(error-if,<condition>,<text) The 'info' function prints a message to stdout as in Make. The 'warning-if' and 'error-if' are similar to 'warning' and 'error' in Make, but take the condition parameter. They are effective only when the <condition> part is y. Kconfig does not implement the lazy expansion as used in the 'if' 'and, 'or' functions in Make. In other words, Kconfig does not support conditional expansion. The unconditional 'error' function would always terminate the parsing, hence would be useless in Kconfig. Signed-off-by:

Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by:

Kees Cook <keescook@chromium.org>

scripts/kconfig/preprocess.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -106,6 +106,21 @@ struct function {
		char (func)(int argc, char *argv[]);
		};

		static char do_error_if(int argc, char argv[])
		{
		if (!strcmp(argv[0], "y"))
		pperror("%s", argv[1]);

		return NULL;
		}

		static char do_info(int argc, char argv[])
		{
		printf("%s\n", argv[0]);

		return xstrdup("");
		}

		static char do_shell(int argc, char argv[])
		{
		FILE *p;
		@@ -146,9 +161,21 @@ static char do_shell(int argc, char argv[])
		return xstrdup(buf);
		}

		static char do_warning_if(int argc, char argv[])
		{
		if (!strcmp(argv[0], "y"))
		fprintf(stderr, "%s:%d: %s\n",
		current_file->name, yylineno, argv[1]);

		return xstrdup("");
		}

		static const struct function function_table[] = {
		/* Name MIN MAX Function */
		{ "error-if", 2, 2, do_error_if },
		{ "info", 1, 1, do_info },
		{ "shell", 1, 1, do_shell },
		{ "warning-if", 2, 2, do_warning_if },
		};

		#define FUNCTION_MAX_ARGS 16

Admin message