X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type :content-transfer-encoding; q=dns; s=default; b=XTneiZYkgiwuAZkz 5LjMBPgy2Q/MqyhRDYRvTIrzo/ZAWHwBMG4LNb4RdoyV64JGNUDf3mItZFAk98ys B0IqjV62QkP6qOh95Trju3AF9qbIA8M0cFd7hmfTYs2Xs2DnbBz2Nltnvya4CpXz yvx0cb3jV6HrCuHjF4eFw418xIU= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type :content-transfer-encoding; s=default; bh=5AXoRbR6J2a9uQSQH5FARy dmY44=; b=Ss2SUouu8OzMMOnY8MyKJfNsqQOMN69rAKCWipA7xAVXaTYT1ojZ3T miaXo/sMqcJ0Vt68/QunbhG8V9sfmxMdMLV5sBFYPeQz29d9Go/MPZRGLTX/R04D YMtD6ZCIF5KtqFsEcB4NaGknavLZrLcy8oU5e4zJG8swMCxa+ysLQ= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.5 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=portable X-HELO: mail-it0-f44.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=+FILyklc9WwQLbt3ysAm4+7FUBtLe1kpBjJ2/mjwOJ0=; b=lfdJ0UDcvhuLiNjBRS0DZ/TrdKJCRyCigy4zTu/ReDdVoRYNWz6LJtZlaI3NC0c8yF 2qwT41HbAOLkyc46lQpooCRUCCsiQ3p0p+hV1aQswgU7UPE7OmL/hfPn3+BdfdV5aVTt eJnOJwAWiWxEW6nhAWdR6W6gmM0HSju+Cv0w6v77b3TiWw1eVxs9QNnX5XwWdAs9YoPw nq1sWH8xZsc31Vhw/7OEGldIrD1IpMSAsbOI0P32cqRbxNzyd6nZDcExJoXNNLXQqX5y dNa8lJRcaeMKEkPfsh/tGIfytbZJlpeEH+I5WL1qkCI342GNjMgmwm3AhSsyGidGTSxM r2XA== X-Gm-Message-State: ABUngvcFINRYldRorDXNZxdqY7+UnblBZHBh92lq55gAGMTM3J3I9Ig5p/3TziGmABWagg== X-Received: by 10.107.136.86 with SMTP id k83mr15315639iod.99.1478657389854; Tue, 08 Nov 2016 18:09:49 -0800 (PST) Subject: Re: sys/cdefs.h or maybe gcc build issue To: cygwin AT cygwin DOT com References: <57cbf5e2-f37b-ae50-f65c-dd6782481962 AT gmail DOT com> <6ecdfff0-9f53-9cd6-9934-6237c153ea7b AT cornell DOT edu> <20161108151701 DOT GB31855 AT calimero DOT vinschen DOT de> From: cyg Simple Message-ID: Date: Tue, 8 Nov 2016 21:09:45 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 In-Reply-To: <20161108151701.GB31855@calimero.vinschen.de> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-IsSubscribed: yes On 11/8/2016 10:17 AM, Corinna Vinschen wrote: > On Nov 1 22:29, cyg Simple wrote: >> On 11/1/2016 3:42 PM, Ken Brown wrote: >>> On 10/30/2016 2:23 PM, cyg Simple wrote: >>>> The below sample code will give a warning that visibility isn't >>>> supported in this configuration. Either the GCC build is incorrect or >>>> the sys/cdefs.h needs to be modified to define __hidden to empty. >>>> >>>> /********************************************/ >>>> #include >>>> #include >>>> >>>> __hidden void hello (char * str) { >>>> printf("%s %s\n", "Hello", str); >>>> } >>>> >>>> int main (int argc, char ** argv) { >>>> hello("cruel world!"); >>>> } >>>> /********************************************/ >>> >>> If you're trying to write portable code, why would you assume that >>> __hidden is defined? It's not defined in glibc, for example, and your >>> sample program doesn't compile on Linux: >>> >>> $ gcc test.c >>> test.c:4: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before >>> ‘void’ >>> >>> Do you have a real use case where this issue came up? The sample isn't >>> very convincing as it stands. >> >> I don't in the real case sense but in Cygwin __hidden is defined. And >> obviously it is incorrectly defined in _YOUR_ Linux. If the visibility >> attribute isn't supported by the GCC compiler these helper macros >> shouldn't be defined as if they were. > > Fixed in the repo. > Thanks, in a few months I can remove my #ifdef __CYGWIN__ to #undef and #define it. -- cyg Simple -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple