From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from Ishtar.sc.tlinx.org (ishtar.tlinx.org [173.164.175.65]) by sourceware.org (Postfix) with ESMTPS id 9D6F1383F84F for ; Mon, 7 Dec 2020 07:28:17 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 9D6F1383F84F Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=tlinx.org Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=cygwin@tlinx.org Received: from [192.168.3.12] (Athenae [192.168.3.12]) by Ishtar.sc.tlinx.org (8.14.7/8.14.4/SuSE Linux 0.8) with ESMTP id 0B77PwPf029250; Sun, 6 Dec 2020 23:26:00 -0800 Message-ID: <5FCDD97A.7080409@tlinx.org> Date: Sun, 06 Dec 2020 23:27:54 -0800 From: L A Walsh Reply-To: "cygwin@cygwin.com" User-Agent: Thunderbird MIME-Version: 1.0 To: Johnathan Schneider CC: "cygwin@cygwin.com" Subject: Re: Workaround for cygwin's way of linking folders? References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Dec 2020 07:28:19 -0000 On 2020/12/06 14:41, Johnathan Schneider via Cygwin wrote: > Hi all, > > I'm setting up a cross platform development environment using Cygwin. Upon attempting to use Cygwin's CMake that is natively bundled, I discovered that Cygwin goes looking for the gcc in /usr/bin/cc, ---- If you go into 'bash' under cygwin, what do you see in /usr/bin? /usr/bin is only a valid path inside programs that are running on cygwin -- if you run programs outside of cygwin, say directly from Windows, they won't see them. Cmake would likely be in the same folder as gcc. How are you invoking Cmake? If you are running cmake from, say, the cygwin path of /bin (assuming you have cygwin installed at C:\ and have your cygwin mount prefix set to '/'. In bash, type mount -p and you should see something like: > mount -p Prefix Type Flags / user binmode Just like windows has various magic folders that show up under explorer, but don't really exist, cygwin does too, but only cygwin utils see the cygwin-folders. FWIW, /bin from a cygwin install is mounted (within cygwin) on /usr/bin, so the contents should be the same. If you want to make use of windows+cygwin at the same time, it's best to install cygwin at 'C:\' and set you mount prefix like I have above, then you will get more commonality between windows+cygwin. For example, to make /usr/bin appear under window, I have a symlink at C:/usr/bin that points to C:/bin. Under windows, a 'dir' of C:\usr will show (from cmd.exe, some lines removed for brevity): C:\Users\linda>dir \usr Volume in drive C is System Disk Directory of C:\usr 2020/05/17 17:11 . 2020/05/17 17:11 .. 2018/05/19 09:42 bin [..\bin] 2020/10/07 09:35 include 2018/05/19 09:41 lib [..\lib] 2018/05/17 11:20 lib64 [..\lib] 2020/12/06 23:25 sbin [..\sbin] 2020/11/03 20:38 share 2020/10/07 08:37 src 2020/05/17 17:11 x86_64-pc-cygwin 0 File(s) 0 bytes 17 Dir(s) 150,639,538,176 bytes free > > Alas, my question - what is the recommended workaround? > --- Look for cygwin paths from a cygwin shell. That's the start. Making win+cyg play nice, involves little bits like symlinks like I used above. It's not officially supported by the cygwin, but I find such things convenient.