Cygwin re-installed

[FeodorFitsner]

Installation script:

Write-Host "Installing Cygwin x86..." -ForegroundColor Cyan

if(Test-Path C:\cygwin) {
    Write-Host "Deleting existing installation..."
    Remove-Item C:\cygwin -Recurse -Force
}

# download installer
New-Item -Path C:\cygwin -ItemType Directory -Force
$exePath = "C:\cygwin\setup-x86.exe"
(New-Object Net.WebClient).DownloadFile('https://cygwin.com/setup-x86.exe', $exePath)

# install cygwin
cmd /c start /wait $exePath -qnNdO -R C:/cygwin -s http://cygwin.mirror.constant.com -l C:/cygwin/var/cache/setup -P mingw64-i686-gcc-g++ -P mingw64-x86_64-gcc-g++ -P gcc-g++ -P autoconf -P automake -P bison -P libtool -P make -P python -P gettext-devel -P intltool -P libiconv -P pkg-config -P wget -P curl

Write-Host "Installed Cygwin x86" -ForegroundColor Green

[Liryna]

Hi @FeodorFitsner ,

It that a script available for users ?

[FeodorFitsner]

I put script here for mostly "internal" purposes, but also some people could re-use the same approach for other software.

[rprichard]

-P mingw-gcc-core -P mingw-gcc-g++

@FeodorFitsner FWIW, these packages are very old and were recently removed from Cygwin. The replacements are the mingw-w64-XXX packages, which can target either 32-bit or 64-bit.

https://cygwin.com/ml/cygwin-announce/2016-03/msg00069.html

[FeodorFitsner]

Thank you, will take a look.

[FeodorFitsner]

What would be an updated installation command then?

[rprichard]

I typically just install the mingw64-{i686,x86_64}-gcc-g++ packages, and their dependencies include everything I care about. Most of the packages on that command-line look OK as-is, but these are interesting:

• mingw-runtime
• mingw-binutils
• mingw-gcc-core
• mingw-gcc-g++
• mingw-pthreads
• mingw-w32api

I think the corresponding MinGW-w64 content is all installed by installing the mingw64-{i686,x86_64}-gcc-g++ packages, but maybe you also need gcc-core, which pulls in w32api-runtime and w32api-headers. You already have gcc-core, though, so that's taken care of. I think you just need the toplevel G++ packages.

I spent a few minutes poking at the Cygwin package database, in INI file format, because I couldn't find a web interface.

There are no packages that start with mingw- anymore, so all of the packages I quoted can be removed.

If you wanted to be explicit, then I think the closest analogues are:

• mingw-runtime => mingw64-$(ARCH)-runtime
• mingw-binutils => mingw64-$(ARCH)-binutils
• gcc-core => mingw64-$(ARCH)-gcc-core
• gcc-g++ => mingw64-$(ARCH)-gcc-g++
• mingw-pthreads => mingw64-$(ARCH)-winpthreads (There are also mingw64-$(ARCH)-pthreads packages, but no other package requires them. Both the mingw64-i686-winpthreads and mingw-i686-pthreads packages contain a /usr/i686-w64-mingw32/sys-root/mingw/include/pthread.h file, and the content is very different. I suggest that we avoid installing the mingw64-$(ARCH)-pthreads packages. Not sure what's up here, actually. I can install both at the same time, and pthreads seems to be winning out, but maybe it's accidental? The mingw64-$(ARCH)-winpthreads packages are required by both the mingw64-$(ARCH)-gcc-core and the mingw64-$(ARCH)-headers packages.)
• mingw-w32api => mingw64-$(ARCH)-headers, maybe? Maybe w32api-headers and w32api-runtime too? The latter two packages are already pulled in by gcc-core.

When I tested the MSYS2 package list, it also installed compilers for Fortran, Ada, and Objective-C. I'm guessing we aren't that interested in those languages. I didn't see a toplevel package that included them.

[FeodorFitsner]

I'm doing a clean install and I don't get an error while trying to install mingw-runtime package with the following command:

C:\cygwin\setup-x86.exe -qnNdO -R C:/cygwin -s http://cygwin.mirror.constant.com -l C:/cygwin/var/cache/setup -P mingw-runtime

Looks like those mingw-* packages are still there?

[rprichard]

AFACT, the Cygwin installer doesn't complain if -P names a non-existent package. I ran the installer with --verbose, and I didn't see an error message or a non-zero exit code. Here are my run details.

That said, I did notice that the http://cygwin.mirror.constant.com mirror still has the packages for those files at http://cygwin.mirror.constant.com/x86_64/release/mingw-runtime/. The corresponding directory on the http://mirrors.kernel.org/sourceware/cygwin mirror, on the other hand, is missing. The two mirrors do have the same x86_64/setup.ini files, though, which lack the mingw-runtime package.

In the package selection page of the Cygwin installer, there are no packages starting with mingw-.

[FeodorFitsner]

OK, thank you for your suggestions! After writing a parser to get dependencies in that ini file I've figured out that cygwin thing 😄

We, basically, need only these 2 packages:

gcc-g++ (includes gcc-core, w32api-headers, w32api-runtime)
mingw64-i686-gcc-g++ (includes mingw64-i686-gcc-core, mingw64-i686-binutils, mingw64-i686-runtime, mingw64-i686-winpthreads)

and we're going to leave that random stuff:

autoconf
automake
bison
libtool
make
python
gettext-devel
intltool
libiconv
pkg-config
wget
curl

So, updated installer code would look like this:

Write-Host "Installing Cygwin x86..." -ForegroundColor Cyan

if(Test-Path C:\cygwin) {
    Write-Host "Deleting existing installation..."
    Remove-Item C:\cygwin -Recurse -Force
}

# download installer
New-Item -Path C:\cygwin -ItemType Directory -Force
$exePath = "C:\cygwin\setup-x86.exe"
(New-Object Net.WebClient).DownloadFile('https://cygwin.com/setup-x86.exe', $exePath)

# install cygwin
cmd /c start /wait $exePath -qnNdO -R C:/cygwin -s http://cygwin.mirror.constant.com -l C:/cygwin/var/cache/setup -P mingw64-i686-gcc-g++ -P mingw64-x86_64-gcc-g++ -P gcc-g++ -P autoconf -P automake -P bison -P libtool -P make -P python -P gettext-devel -P intltool -P libiconv -P pkg-config -P wget -P curl

Write-Host "Installed Cygwin x86" -ForegroundColor Green

EDIT: Sorry, forgot to add their mingw64-x86_64-gcc-g++.