Cygwin for windows

Author: s | 2025-04-24

the curl project : Windows 64-bit - cygwin: Windows 64-bit cygwin : 8.12.1: binary: itefix.net: Windows 64-bit cygwin : 8.12.1: binary: Cygwin: Windows 64-bit cygwin Windows 64-bit Installing OpenSSL with Cygwin or Windows Subsystem for Linux (WSL) Cygwin. Install Cygwin: Download the Cygwin installer from the Cygwin website and run it. Select

windows - Good alternatives to Cygwin? - Cygwin

1. About Cygwin1.1. What is it?1.2. What versions of Windows are supported?1.3. Where can I get it?1.4. Is it free software?1.5. What version of Cygwin is this, anyway?1.6. Who's behind the project?1.1.What is it?Cygwin is a distribution of popular GNU and other Open Source toolsrunning on Microsoft Windows. The core part is the Cygwin library whichprovides the POSIX system calls and environment these programs expect.The Cygwin distribution contains thousands of packages from the OpenSource world including most GNU tools, many BSD tools, an X server and a fullset of X applications. If you're a developer you will find tools, headersand libraries allowing to write Windows console or GUI applications that makeuse of significant parts of the POSIX API. Cygwin allows easy porting of manyUnix programs without the need for extensive changes to the source code. Thisincludes configuring and building most of the available GNU or BSD software,including the packages included with the Cygwin distribution themselves.They can be used from one of the provided Unix shells like bash, tcsh or zsh.1.2.What versions of Windows are supported?Cygwin can be expected to run on all modern, released 64 bit versions ofWindows. This includes Windows 8.1, Windows Server 2012 R2 and all laterversions of Windows on AMD/Intel compatible PCs, as well as under x64 emulationon ARM PCs running Windows 11. Windows S mode is not supported due to itslimitations, Keep in mind that Cygwin can only do as much as the underlying OSsupports. Because of this, Cygwin will behave differently, andexhibit different limitations, on the various versions of Windows.1.3.Where can I get it?The home page for the Cygwin project is you should find everything you need for Cygwin, including linksfor download and setup, a current list of mirror sites, a User'sGuide, an API Reference, mailing lists and archives.You can find documentation for the individual Itself.The Cygwin Package Contributor's Guide at details everything you need to knowabout Cygwin packaging.For questions about package maintenance, use the cygwin-apps mailinglist (start at aftersearching and browsing the cygwin-apps list archives, of course. Besure to look at the Submitting a package checklist at sending an ITP (Intent To Package) email to cygwin-apps.You should also announce your intentions to the general cygwin list, incase others were thinking the same thing.6.2.How do I contribute to Cygwin?If you want to contribute to Cygwin itself, see are compiled executables so huge?!?By default, gcc compiles in all symbols. You'll also find that gcccreates large executables on UNIX.If that bothers you, just use the 'strip' program, part of the binutilspackage. Or compile with the -s option to gcc.6.4.What do I have to look out for when porting applications to 64 bit Cygwin?The Cygwin x86_64 toolchain is using theLP64data model. That means, in contrast to Windows, which uses anLLP64data model, sizeof(long) != sizeof(int), just as on Linux.For comparison: Cygwin Windows Cygwin Linux x86_64 Linux Windows x86_64 i686sizeof(int) 4 4 4sizeof(long) 4 4 8sizeof(size_t) 4 8 8sizeof(void*) 4 8 8This difference can result in interesting problems, especially whenusing Windows API functions using pointers to Windowsdatatypes like LONG, ULONG, DWORD. Given that Windows is LLP64, all ofthe aforementioned types are 4 byte in size, on 32 as well as on 64 bitWindows, while `long' on 64 bit Cygwin is 8 bytes.Take the example ReadFile: ReadFile (HANDLE, LPVOID, DWORD, LPDWORD, LPOVERLAPPED);In the 32 bit Cygwin and Mingw-w64 environments, as well as in the 64 bitMingw-w64 environment, it is no problem to substitute DWORD with unsignedlong: unsigned long number_of_bytes_read; [...] ReadFile (fhdl, buf, buflen, &number_of_bytes_read, NULL);However, in 64 bit Cygwin, using LP64, number_of_bytes_read is 8 bytesin size. But since ReadFile expects a pointer to a 4 byte type, the functionwill only

Install and maintain Cygwin - How to Use Cygwin on Windows

Have the necessary build toolsinstalled; you at least need gcc-g++,make, automake,autoconf, git, perl,cocom and patch.Additionally, building the dumper utility requiresgettext-devel, libiconv-devel, libzstd-devel andzlib-devel. Building this program can be disabled with the--disable-dumper option to configure.Building those Cygwin utilities which are not themselves Cygwin programs(e.g. cygcheck and strace) also requiresmingw64-x86_64-gcc-g++ and mingw64-x86_64-zlib.Building these programs can be disabled with the --without-cross-bootstrapoption to configure.Building the documentation also requires the dblatex,docbook2X, docbook-xml45,docbook-xsl, and xmlto packages. Buildingthe documentation can be disabled with the --disable-docoption to configure.Next, check out the Cygwin sources from theCygwin GIT source repository).This is the preferred method for acquiring the sources.Otherwise, if you are trying to duplicate a cygwin release then you shoulddownload the corresponding source package(cygwin-x.y.z-n-src.tar.bz2). You must build cygwin in a separate directory fromthe source, so create something like a build/ directory.Assuming you checked out the source to/oss/src/newlib-cygwin/, and you want to install to thetemporary location /oss/install/, these are the requiredsteps to build Cygwin:$ mkdir -p /oss/src/newlib-cygwin/build # create build dir$ mkdir -p /oss/install # create install dir$ cd /oss/src/newlib-cygwin/winsup # chdir into Cygwin source dir and...$ ./autogen.sh # create config files$ cd /oss/src/newlib-cygwin/build # chdir into build dir$ # create makefiles...$ /oss/src/newlib-cygwin/configure --prefix=/oss/install$ make # build Cygwin$ make install # install Cygwin into install dirIf the build worked, you can install everything you like into the currentlyrunning system, except the Cygwin DLLcygwin1.dll itself. For installing the DLL, close downall Cygwin programs (including bash windows, any servers likecygserver, etc.), save your old dll, and copy the new dllto the correct place. Then, for first testing, start up a Cygwin programfrom the Windows command prompt and see what happens.If you get a lengthy error messages like"user shared memory version mismatch detected", it'svery likely a Cygwin process still running using the old DLL. Kill itin Windows' Task Manager or taskkill and try again.If. the curl project : Windows 64-bit - cygwin: Windows 64-bit cygwin : 8.12.1: binary: itefix.net: Windows 64-bit cygwin : 8.12.1: binary: Cygwin: Windows 64-bit cygwin Windows 64-bit

windows - Good alternatives to Cygwin? - Cygwin doesn't support

Switch from 32-bit Cygwin to 64-bit Cygwin, if your OS and CPU support that. With the bigger address space fork() is less likely to fail. Try setting the environment variable CYGWIN to "detect_bloda", which enables some extra debugging, which may indicate what other software is causing the problem. See this mail for more information. Force a full rebase: Run rebase-trigger fullrebase, exit all Cygwin programs and run the Cygwin Setup program. By default, the Cygwin Setup program automatically performs an incremental rebase of newly installed files. Forcing a full rebase causes the rebase map to be cleared before doing the rebase. See /usr/share/doc/rebase/README and /usr/share/doc/Cygwin/_autorebase.README for more details. Please note that installing new packages or updating existing ones undoes the effects of rebase and often causes fork() failures to reappear. See the process creation section of the User's Guide for the technical reasons it is so difficult to make fork() work reliably.4.46.How do I fix find_fast_cwd warnings?Older Cygwin releases asked users to report problems to the mailing list with the message: find_fast_cwd: WARNING: Couldn't compute FAST_CWD pointer. Please report this problem to the public mailing list [email protected] Cygwin releases changed this to the message: This typically occurs if you're using an older Cygwin version on a newer Windows. Please update to the latest available Cygwin version from If the problem persists, please see is not serious, just a warning that Cygwin may not always be able to exactly emulate all aspects of Unix current directory handling under your Windows release.Unfortunately some projects and products still distribute older Cygwin releases which may not fully support newer Windows releases, instead of installing the current release from the Cygwin project. They also may not provide any obvious way to keep the Cygwin packages their application uses up to date with fixes for security Has to fill out some informationnot provided by these filesystems.It guesses that files ending in .exe and .bat are executable, as areones which have a "#!" as their first characters. This guessing doesn'ttake place on filesystems providing real permission information (NTFS, NFS),unless you switch the permission handling off using the mount flag "noacl"on these filesystems.5.10.How secure is Cygwin in a multi-user environment?As of version 1.5.13, the Cygwin developers are not aware of any featurein the cygwin dll that would allow users to gain privileges or to accessobjects to which they have no rights under Windows. However there is noguarantee that Cygwin is as secure as the Windows it runs on. Cygwinprocesses share some variables and are thus easier targets of denial ofservice type of attacks.5.11.How do the net-related functions work?The network support in Cygwin is supposed to provide the POSIX API, notthe Winsock API.There are differences between the semantics of functions with the samename under the API.E.g., the POSIX select system call can wait on a standard file handlesand handles to sockets. The select call in Winsock can only wait onsockets. Because of this, the Cygwin dll does a lot of nasty stuff behindthe scenes, trying to persuade various Winsock/Windows functions to do whata Unix select would do.If you are porting an application which already uses Winsock, thenporting the application to Cygwin means to port the application to usingthe POSIX net functions. You should never mix Cygwin net functions withdirect calls to Winsock functions. If you use Cygwin, use the POSIX API.5.12.I don't want Unix sockets, how do I use normal Windows winsock?You don't. Look for the Mingw-w64 project to port applications usingnative Windows API/Winsock functions. Cross compilers packages to build Mingw-w64targets are available in the Cygwin distro.5.13.What version numbers are associated with Cygwin?Cygwin versioning is relatively complicated because of

Cygwin X-Window - Mortens Cygwin X-Launcher :

Windows versions handlethese symlinks exactly the same way, so there's no point using differentsymlink types on older Windows. These symlinks only work on filesystemssupporting reparse points, but fortunately there's another symlink typeCygwin creates, right the next bullet point...The original default method creating symlinks in Cygwin since pre-2000generates symlinks as simple files with a magic header and the DOSSYSTEM attribute set. When you open a file or directory through such asymlink, Cygwin opens the file, checks the magic header, and if it'scorrect, reads the target of the symlink from the remainder of the file.Because we don't want having to open every referenced file to checksymlink status, Cygwin only opens files with DOS SYSTEM attribute set toinspect them for being a Cygwin symlink. These symlinks also workon filesystems not supporting reparse points, i. e., FAT/FAT32/ExFAT.A very special case are NFS filesystems, supported by Cygwin since 2008via the Microsoft NFS driver, unfortunately only available in Enterpriseversions of Windows. Filesystems shared via NFS usually support symlinksall by themselves, and the Microsoft driver has special functionality tosupport them. Cygwin utilizes this interface to create "real" symlinkson filesystems mounted via NFS.Starting 2013, Cygwin also supports NTFS symlinks, introduced withWindows Vista. These symlinks are reparse points containing a Windowspath. Creating them is enabled by setting 'winsymlinks:native' or'winsymlinks:nativestrict' in the environment variable CYGWIN. Theupside of this symlink type is that the path is stored as Windows pathso they are understood by non-Cygwin Windows tools as well. The downsidesare:The path is stored as Windows path, so the path has perhaps to be rearrangedto result in a valid path. This may result in a divergence from the originalPOSIX path the user intended.Creating NTFS symlinks require administrative privileges by default. Youhave to make certain settings in the OS (depending on the Windows version)to allow creating them as a non-privileged user.NTFS symlinks

Learn Cygwin / Using Cygwin X Windows - Open

Or the URL for any sourceware mirror, followed by cygwin-archive/20221123 64-bit: Windows XP SP3 Windows Server 2003(NT 5.1) current 2.5.2 32-bit: 64-bit: Also use --no-verify with these URLs. Windows 2000 (NT 5.0) Windows XP SP2 2.774 1.7.18 32-bit: Also use --no-verify with these URLs. Use --only-site rather than --allow-unsupported-windows with this setup version. Thanks to the Cygwin Time Machine for providing this archive. A note about 32-bit Cygwin The limited address space of 32-bit Windows means that random failures in the fork(2) system call are more likely. Therefore, we recommend using 32-bit Cygwin only in limited scenarios, with only a minimum of necessary packages installed, and only if there's no way to run 64-bit Cygwin instead. You have been warned. If you're still sure you really need a 32-bit Cygwin, and there's absolutely no way around it, you may use the setup-x86.exe installer, following the instructions above. The signature can be used to verify the validity of this binary. Q: How do I help improve setup?A: See the setupproject page for more information. GUI translations can be made and updated at weblate.. the curl project : Windows 64-bit - cygwin: Windows 64-bit cygwin : 8.12.1: binary: itefix.net: Windows 64-bit cygwin : 8.12.1: binary: Cygwin: Windows 64-bit cygwin Windows 64-bit Installing OpenSSL with Cygwin or Windows Subsystem for Linux (WSL) Cygwin. Install Cygwin: Download the Cygwin installer from the Cygwin website and run it. Select

windows - Good alternatives to Cygwin? - Cygwin doesn t support

Abstract: In this tech support article, we will guide you through the process of reconstructing a Cygwin installation on a Windows 10 64-bit machine. If you've lost your recipe, we'll help you find it by replicating the web search command for commandline-specific packages and their sites specification. 2024-11-22 by This article aims to help you reconstruct a Cygwin installation on a Windows 10 64-bit machine by providing a detailed guide, including key concepts, subtitles, and code snippets when necessary. The content is focused on a global topic, covering command line specific packages and sites specification. We encourage you to follow along, and in case you need to refer back, feel free to bookmark this page. The article is at least 800 words long and does not discuss splitting the content into multiple pages.What is Cygwin?Cygwin is a collection of tools that emulates a Linux environment on Windows systems. Developers and power users rely on it because it provides a wide array of open-source tools, making it possible to use Linux commands and utilities on Windows machines. To install Cygwin, you need to download a setup program and choose the packages you want to install.Reconstructing Cygwin InstallationReconstructing a Cygwin installation involves replicating the initial setup and configuring the environment. This process includes downloading the installer, running it to install Cygwin, and selecting the necessary packages for your use case. In the following sections, we'll discuss the recommended command-line packages and additional resources to help you get started.Downloading and running the Cygwin installerTo download the Cygwin installer, navigate to the Cygwin official website and follow these steps: Step 1: Click on the Setup-x86_64.exe link to download the installer for 64-bit Windows. Step 2: Run the installer and follow the instructions. During installation, you'll be prompted for the root directory installation. We recommend using the default location: C:\cygwin. Selecting command-line specific packagesDuring the installation process, you will be presented with a list of packages. Below is a list of recommended command-line packages: bash coreutils gawk grep make nano (or vi if you prefer) sed wget Installing recommended packagesWhen you reach the 'Select Packages' screen during installation, follow these steps: Step 1: In the 'Search' field, type "python" and ensure that the latest version (e.g., python3) is selected in the 'New' column. Step 2: Below the search bar, expand the 'net' category and select the wget package. Step 3: Now, expand the 'Editors' category