kconfig: expand lefthand side of assignment statement

Make expands the lefthand side of assignment statements. In fact, Kbuild relies on it since kernel makefiles mostly look like this: obj-$(CONFIG_FOO) += foo.o Do likewise in Kconfig.

Masahiro Yamada committed 8 years ago

Commit 82bc8bd1 parent ed2a22f1 file · +7 −0Browse files

Unified · Split

scripts/kconfig/zconf.l+7−0

@@ -114,6 +114,13 @@ n [A-Za-z0-9_-] · 113 unmodified lines
114	114	yylval.string = text;
115	115	return T_VARIABLE;
116	116	}
	117	+ ({n}\|$)+ {
	118	+ /* this token includes at least one '$' */
	119	+ yylval.string = expand_token(yytext, yyleng);
	120	+ if (strlen(yylval.string))
	121	+ return T_VARIABLE;
	122	+ free(yylval.string);
	123	+ }
117	124	"=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_RECURSIVE; return T_ASSIGN; }
118	125	":=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_SIMPLE; return T_ASSIGN; }
119	126	"+=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_APPEND; return T_ASSIGN; }