Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 1d6272e6 authored by Masahiro Yamada's avatar Masahiro Yamada
Browse files

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: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: default avatarKees Cook <keescook@chromium.org>
parent 82bc8bd8

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