Cygwin Setup Could Not Download [PATCHED] Mirror Sites List
Janvier Bender
Note: We automatically poll these mirrors periodically toensure that they have the latest Cygwin packagesavailable. The list of mirrors below reflects all of the mirrors who appear tohave up-to-date copies of the Cygwin package repository.
When asking to be added, please provide contact information, the URLof the mirror, and the location of the mirror (in a similar format to thatused for existing mirrors in the mirror site list).Make sure that your mirror rsyncs directly from cygwin.com at leasttwice a day.
The mirror list is automaticallymaintained so that only active mirrors are listed. A mirroris temporarily removed from the list if it remains out of date for morethan 24 hours. If your mirror was dropped from the list, do not panic. It meansthat a program has determined that the content on your mirror is not up-to-date.Ensure that your mirror is up-to-date. It will be added again automatically onceit has has up-to-date content.There is no need to contact anyone about this.
I've noticed gross inconsistencies in the cygwin mirror sites. The packages that you get installed by default depend on which mirror you select. Even worse, some sites are missing important packages all together so you can't improve on the default installation.
My default installation of cygwin from sourceware.mirrors.tds.net did not include the diff or svn commands. When I went back to their mirror site (using setup.exe with the Internet option) the diffutils package and subversion packages were not even available at that site. The cygwin.mirrors.hoobly.com mirror had both of these packages, and based on the full listing it appears that it has a lot more packages that aren't available at sourceware.mirrors.tds.net.
This shouldn't be much of a problem (anymore). Below the mirror list on this page it says that every mirror is automatically checked at regular intervals, and servers missing packages are temporarily dropped from the list. It also says that all mirrors should sync twice a day. I manually checked a number of mirrors just now, and they had all synced recently and seemed to have the same content.
After spending a lot of time trying different things, I was able to get it working after pasting the ftp link in the cygwin User url input box. Go to the Cygwin mirrors page and then search for ftp and copy any of the ftp link by right clicking on it. Now restart the setup wizard from starting and then copy this ftp link and you should be able to download the dependencies. The below screenshot highlights the ftp that I used.
On the second page, select 'Install from Internet'.
The following page is all user preferances, except the 'Default Text File Type' which is recommended you use 'Unix / binary'.
After clicking next, you are prompted for a CygWin temporary folder, any folder will suffice, the default is usually the better option.
The next screen's options are firewall/proxy settings, these are specific to the Computer/Network you are currently using.
Once you click next on the previous screen, the installer will download a list of mirror sites containing the CygWin binaries. Select one which you think is closest to you for a faster installation time.
Finaly, you are presented with a 'Select Packages' screen.
I *think* it should work fine without all of the dev packages.
Download the CrossCompiler from one of the mirrors below to the root cygwin folder (c:\cygwin).If it gets renamed to 'crosstool_gcc-3.4.1.tar.tar' please rename it to 'crosstool_gcc-3.4.1.tar.gz'.Download Mirrors for 'crosstool_gcc.tar.gz'
Now you're ready to try compiling.Back to the cygwin bash window, and we're now going to have to navigate to your code's location.An example path could be 'C:\MyCode\MyPlugin\' so in the bash shell we type the following:
On bash shell, after setting the directory to the the "root" (via "cd /"), you could find a directory called "cygdrive" (via "ls" or "dir"), where all the hard disks are mounted. "cd cygdrive" and "ls" lists all the hard disks, e.g., "c", "d", etc.
MinGW-w64 (short for "Minimalist GNU for Windows") (@ -w64.org/), is a minimalist (i.e., small but fewer features compared with cygwin) development environment for native Microsoft Windows applications, in particular:
You must first download and install the 32-bit versionof Cygwin/X. Cygwin/X provides youwith a UNIX shell and an X server from which you can then run NCL.Very important note: You must install the 32-bit version ofCygwin/X and not the 64-bit version of Cygwin/X. To get the32-bit version of Cygwin/X, install it via the "setup-x86.exe"program and not the "setup-x86_64.exe" program. Details are includedbelow.Here are some step-by-step instructions for getting NCL to rununder Cygwin/X. Please read these instructions all the waythrough before starting the installation.
- Install Cygwin/X
- Run Cygwin/X
- Make sure you have a Cygwin home directory
- Download NCL
- Install NCL
- Set up your environment to run NCL
- Set up C-shell
- Set up DISPLAY environment variable
- Test NCL
- Troubleshooting problems
- Category "Devel": install "autoconf", "binutils", "bison","byacc", "flex", "gcc", "gcc4", "gcc4-fortran", "gcc-g++", "gdb", "make", "makedepend", "openssl-devel".
- Category "Editors": [optional] some popular editors thatyou might want for editing your files include "nedit", "emacs", and"vim".
- Category "Graphics": [optional] install "ghostscript" forviewing PostScript files, "ImageMagick" for "convert"
- Category "Libs": "expat", "libcurl4", "libexpat-devel","libgfortran4", "libidn-devel", "libxml2", "libtirpc", "zlib"
- Category "Net": `install "libcurl-devel", "libcurl4", and"openssh".
- Category "Shells": install "bash", "sh-utils", "pdsh", and"tcsh".
- Category "X11": install all of the required packages thatthe "InstallingCygwin/X" section mentions (see #15 where it lists all the "X11"packages and whether they are required or optional). As of July2018, the list of packages that we recommend are:
- libX11-devel
- libX11-6
- libXaw-devel
- libXaw7
- libXm4
- libXmu-devel
- libXpm4
- libXt-devel
- libcairo-devel
- libcairo2
- libfontconfig-devel
- libfontconfig1
- libfreetype-devel
- libfreetype6
- libxcb-devel
- xauth
- xclock
- xinit
- xorg-server
- xterm
- X-start-menu-icons
- X-startup-scripts
- Edit /etc/passwd (using either emacs, vi, or even Windows Wordpad)
- Find your entry (it will start with your windows username)
- Take the space out of your username (1st entry) and your homedirectory (2nd to last entry).
- Quit all Cygwin
- Use Windows Explorer to rename your home directory(for example "C:\cygwin\home\cplager")Download NCLNow you are ready to download and install NCL. If you haven't already,go to the Climate DataGateway web site and download the NCL binary that has the word"CYGWIN" in the name of the file.Here's a directlink to the location of NCL V6.5.0 for Cygwin.A good place to save this file is in the location"c:\cygwin\home\xxx", where xxx is thehome directory the Cygwin/X installation set up for you. Install NCLOnce you have the *.tar.gz file, decide where you want to install NCL.If you are new to UNIX and don't know where you want to put it, then Irecommend installing NCL in the directory "/usr/local". I'll use thispath in my example below, and I will assume that you saved the file to"c:\cygwin\home\xxx", using "JohnDoe" as an examplefor xxx, and"ncl_ncarg-6.5.0.CYGWIN_NT-10.0-WOW_i686.tar.gz" as the name of thefile. (The name of the file may vary slightly, since the versionnumber changes almost monthly.)From the Cygwin/X window that you opened earlier, type thefollowing commands: mkdir /usr/local cd /usr/local gunzip /cygwin/home/JohnDoe/ncl_ncarg-6.5.0.CYGWIN_NT-10.0-WOW_i686.tar.gz tar -xvf /cygwin/home/JohnDoe/ncl_ncarg-6.5.0.CYGWIN_NT-10.0-WOW_i686.tarNote: the path "/usr/local" may already exist, in which caseyou'll get an error message when you type "mkdir /usr/local". This isokay, and you can safely ignore the message.Set up your environment to run NCLEvery user of NCL needs to set their environment before they can useNCL. You can do this by opening your"c:\cygwin\home\xxx\.bashrc" (or"c:\cygwin\home\xxx\.bash_profile" if ".bashrc" doesn't exist)file with a UNIX editor and adding the lines: export NCARG_ROOT=/usr/local export PATH=/usr/local/bin:$PATHPlease note that you must use a UNIX editor to change this file, andnot a Windows application like "notepad". The UNIX editor should beinvoked from a Cygwin or X/Cygwin window. If you are unfamiliar withUNIX editors, we recommend that youuse nedit, which is availablethrough the Cygwin "setup-x86.exe" program.Make sure you add the above lines after the last reference toPATH. If PATH already has "/usr/local/bin" as part of it, then youdon't need to add the last line.If you plan to use csh (C-shell) or tcsh , then add the followinglines to your "c:\cygwin\home\xxx\.cshrc" (or ".tcshrc") file: setenv NCARG_ROOT /usr/local setenv PATH /usr/local/bin:$PATHTo make sure these changes take effect right away, you can "source"the files, or completely exit your Cygwin/X window and startit up again. Here's how to source the files:csh/tcsh: source /.cshrc source /.tcshrcbash/ksh: . /.bashrc . /.bash_profileSet up C-shellIf you plan to use the "ng4ex" script, then you'll need to make sureyou have C-shell before you can run it.In the same Cygwin/X window, type: which csh which tcshIf it reports that csh cannot be found but that tcsh can, then type thefollowing: ln -s /usr/bin/tcsh.exe /usr/bin/csh.exe cshThis will put you into a C-shell environment. You only need toexecute the "ln -s" command once, but the "csh" command you will needto execute any time you are not in C-shell.If the above "which" commands report that neither "tcsh" or "csh" canbe found, thn you need to run "setup-x86.exe" again, and make sure thatyou select the "tcsh" package (which falls under the "Shells"category) to be installed.Set up DISPLAY environment variableIn order to run any X applications, including running NCL to displaygraphics to your screen, you may need to set up your environment byopening "c:\cygwin\home\xxx\.bashrc" in your favorite editor,and adding the following lines at the bottom: export DISPLAY=:0.0If you are using C-shell, then edit "c:\cygwin\home\xxx\.cshrc"and add the following line: setenv DISPLAY :0.0You should now be ready to run NCL.Test NCLTo test your installation of NCL, type the following: ncl -VThis should echo the version of NCL, like "6.5.0".For a graphical test, type: cp $NCARG_ROOT/lib/ncarg/nclex/xyplot/xy04n.ncl . ncl xy04n.nclA window with an XY plot should pop up. If you click anywhere in thewindow with your left mouse button, the window will go away.If you have problems, then please review the troubleshooting sectionthat follows.Troubleshooting problemsIf you are having problems running the test in the above section,then here are some troubleshooting tips:
- If you get an error about "ncl" not being able tofind a missing "libxxxx.so" library, thenrerun the Cygwin "setup-x86.exe" program and search for xxxx.Make sure this package will get installed and finish runningthe "setup-x86.exe" program. You will probably need to logout and possiblyeven reboot for the change to work properly.
- If you get the error: warning:GKS:GOPWK: --X driver error: error opening displaythen this probably means that your DISPLAY environment variableis not set, or it is set incorrectly. Please type:printenv DISPLAYand make sure that it is set to what is discussed in the "Set up DISPLAY environment variable" sectionabove.
- If it appears your DISPLAY is set correctly, and yet "ng4ex" stilldoesn't work, then you might be running the commands from a Cygwinwindow, and not a Cygwin/X window. The distinction is important, andyou need to be running "ng4ex" from a Cygwin/X Window. Please readthe section "Run Cygwin/X" and make sure youfollow these instructions and then run "ng4ex" from this window.You can tell if your Cygwin window is really a Cygwin/X window by the"X" icon that should appear in the upper left corner of the window.