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authorMasahiro Yamada <yamada.masahiro@socionext.com>2018-05-28 11:21:52 +0200
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-05-28 20:31:19 +0200
commit82bc8bd82e5c4e6e53d4ba20bb89cec6a91d8702 (patch)
tree537b0b2eeb2e604b7399ea9dc7d84a93e05e76b5 /scripts
parentkconfig: support append assignment operator (diff)
downloadlinux-82bc8bd82e5c4e6e53d4ba20bb89cec6a91d8702.tar.xz
linux-82bc8bd82e5c4e6e53d4ba20bb89cec6a91d8702.zip
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-$(CONFIG_FOO) += foo.o Do likewise in Kconfig. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/kconfig/zconf.l7
1 files changed, 7 insertions, 0 deletions
diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index a6cbe2d06d01..25bd2b89fe3f 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -114,6 +114,13 @@ n [A-Za-z0-9_-]
yylval.string = text;
return T_VARIABLE;
}
+ ({n}|$)+ {
+ /* this token includes at least one '$' */
+ yylval.string = expand_token(yytext, yyleng);
+ if (strlen(yylval.string))
+ return T_VARIABLE;
+ free(yylval.string);
+ }
"=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_RECURSIVE; return T_ASSIGN; }
":=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_SIMPLE; return T_ASSIGN; }
"+=" { BEGIN(ASSIGN_VAL); yylval.flavor = VAR_APPEND; return T_ASSIGN; }