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@xxxxxxxxxxxxx> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> --- Changes in v5: - Replace 'warning', 'error' with 'warning-if', 'error-if' Changes in v4: - Add 'error' function Changes in v3: None Changes in v2: None scripts/kconfig/preprocess.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c index 56aa1f0..5ee58ee 100644 --- a/scripts/kconfig/preprocess.c +++ b/scripts/kconfig/preprocess.c @@ -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 -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html