From patchwork Fri Apr 13 05:06:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 133313 Delivered-To: patch@linaro.org Received: by 10.46.84.18 with SMTP id i18csp344368ljb; Thu, 12 Apr 2018 22:08:43 -0700 (PDT) X-Google-Smtp-Source: AIpwx4+gMXEPIaeLe2DLp0R3rZUBHkuLt65Ptw9lMFvYSO06uZRnsiVA1djlC3frzIWuynDQcr0G X-Received: by 10.98.129.2 with SMTP id t2mr2302490pfd.248.1523596123514; Thu, 12 Apr 2018 22:08:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1523596123; cv=none; d=google.com; s=arc-20160816; b=l0FQW8Cmct4ht3XYNYikkovgSLMvzAMkSd3RHzfBF1TAFoWCMmzr0k9ttLbwuCt5l6 2YO9YX9YAysPhvHufdCuirlIgYsywmLmVNA8ysjcWXamDYtLXygLaYrc3tj+mJ99GnAp I3tZBJf8BqlJRxHecEdGaJhzHM02FKGOXr34PdMdEa+8gxnxMKxDE9W6/FRtG1PlpTrK SKHUlUulR/bVZF2ac4i7VYLXE3+s8guHq6vsla3bW0ibPoY+H4TtV+w/g4ZXydtMR6fp FhyxSJ4VPNGrPEWOVujXHIkaM07DGkDf5m0dml0d3ccnBwg7c8DCr+dWHubOXf7yWxxf +9EQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:dkim-signature:dkim-filter :arc-authentication-results; bh=cjztX1j5+aS/xNoPt3VdmJkM/tSdo2S0cdWoku0J/mU=; b=MptOOY2Ix91UI8VcQcBiktnsfZSIir3WHmZLShVxkaw3/CFmiLa9GidKYnD/3LtBDP YVWg5zYgSgUnFHqWMXOxv/J8chWdCZilzUlR6h01lHrtXNKBfyAE0HYHnRCuN20etyw7 URmEHhvV/wjQEsThAvS2Mqn1dCssifBcBRSNNmA93GonmSwAWx6SzCwMa+PCrNaVfA6h vgg9HpcFH95vvGp6UHWHxHKvMI+EI6BSF0o7law2o8bh9ev67humaJ+X+n6z2meNKb41 KqYIaTyUrcuuM57/qOi8C2YCW3rUGdDWS9d7Y65bBwq8jc0eqgKs8qAltz4YS33ipp7J yPBg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@nifty.com header.s=dec2015msa header.b=XdcbZEhh; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k8si3427622pgp.268.2018.04.12.22.08.43; Thu, 12 Apr 2018 22:08:43 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@nifty.com header.s=dec2015msa header.b=XdcbZEhh; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753179AbeDMFIj (ORCPT + 29 others); Fri, 13 Apr 2018 01:08:39 -0400 Received: from conuserg-07.nifty.com ([210.131.2.74]:54947 "EHLO conuserg-07.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751123AbeDMFIa (ORCPT ); Fri, 13 Apr 2018 01:08:30 -0400 Received: from pug.e01.socionext.com (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-07.nifty.com with ESMTP id w3D56lg9029209; Fri, 13 Apr 2018 14:07:01 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-07.nifty.com w3D56lg9029209 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1523596021; bh=cjztX1j5+aS/xNoPt3VdmJkM/tSdo2S0cdWoku0J/mU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XdcbZEhhjPITqsUaSco1zXryhmKG/HtaySb5L9jS2QhuoGOmlICFx27Cd0SuMgzAc 7cFIblwnJH4WAKDl/I0+bXmtAcYtWOgryPWhaDNBQJ6scXoEjPERSfylA6qfFEDJUh u4iobrqQqzmSFkHx68AeMyydFMdxY9tUJAjtU1+BbgetDlJqyseGniybEgDKFLcB0z JWI6cMyxiasslpXb4AZk3tnz7Di5NIU99wNDq6N8SenTqc9B3BK5yeRHqqFfjbYXR0 7ECGfrbFv0ac26RATqBWka1ezIkomtN9zQAw/Cji8igFzL/Dh5tZrLdspH0P5onveK HlMqXtTDH/Eug== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: Linus Torvalds , Sam Ravnborg , Ulf Magnusson , Nicholas Piggin , Kees Cook , Emese Revfy , x86@kernel.org, Masahiro Yamada , linux-kernel@vger.kernel.org Subject: [PATCH 15/30] kconfig: expand lefthand side of assignment statement Date: Fri, 13 Apr 2018 14:06:24 +0900 Message-Id: <1523595999-27433-16-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1523595999-27433-1-git-send-email-yamada.masahiro@socionext.com> References: <1523595999-27433-1-git-send-email-yamada.masahiro@socionext.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Make allows variable references in the lefthand side of assignment. X = A Y = B $(X)$(Y) = 1 This does 'AB = 1' Do likewise in Kconfig as well. Signed-off-by: Masahiro Yamada --- Changes in v3: None Changes in v2: None scripts/kconfig/zconf.l | 7 +++++++ 1 file changed, 7 insertions(+) -- 2.7.4 diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l index c68ca56b..ae33e9b 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; }