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authorMasahiro Yamada <yamada.masahiro@socionext.com>2018-05-28 18:21:53 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-05-29 03:31:19 +0900
commit1d6272e6fe43bc45c7ee58170d91d7242a71296b (patch)
treec40376111aea35ff2a575ed24ad786d3c554fc10 /scripts/kconfig/preprocess.c
parent82bc8bd82e5c4e6e53d4ba20bb89cec6a91d8702 (diff)
downloadlinux-stericsson-1d6272e6fe43bc45c7ee58170d91d7242a71296b.tar.gz
kconfig: add 'info', 'warning-if', and 'error-if' built-in functions
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>
Diffstat (limited to 'scripts/kconfig/preprocess.c')
-rw-r--r--scripts/kconfig/preprocess.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 56aa1f0bad04..5ee58eeb9a7d 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