The special variables, $(filename) and $(lineno), are expanded to a
file name and its line number being parsed, respectively.
Suggested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
Changes in v5: None
Changes in v4:
- Newly added
Changes in v3: None
Changes in v2: None
scripts/kconfig/preprocess.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/scripts/kconfig/preprocess.c b/scripts/kconfig/preprocess.c
index 5ee58ee..0574039 100644
--- a/scripts/kconfig/preprocess.c
+++ b/scripts/kconfig/preprocess.c
@@ -114,6 +114,11 @@ static char *do_error_if(int argc, char *argv[])
return NULL;
}
+static char *do_filename(int argc, char *argv[])
+{
+ return xstrdup(current_file->name);
+}
+
static char *do_info(int argc, char *argv[])
{
printf("%s\n", argv[0]);
@@ -121,6 +126,15 @@ static char *do_info(int argc, char *argv[])
return xstrdup("");
}
+static char *do_lineno(int argc, char *argv[])
+{
+ char buf[16];
+
+ sprintf(buf, "%d", yylineno);
+
+ return xstrdup(buf);
+}
+
static char *do_shell(int argc, char *argv[])
{
FILE *p;
@@ -173,7 +187,9 @@ static char *do_warning_if(int argc, char *argv[])
static const struct function function_table[] = {
/* Name MIN MAX Function */
{ "error-if", 2, 2, do_error_if },
+ { "filename", 0, 0, do_filename },
{ "info", 1, 1, do_info },
+ { "lineno", 0, 0, do_lineno },
{ "shell", 1, 1, do_shell },
{ "warning-if", 2, 2, do_warning_if },
};
--
2.7.4
--
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