cd /D c:\
SET MD=c:\msys32
rmdir /S /Q %MD%
mkdir %MD%
mkdir %MD%\src

powershell -Command "((new-object net.webclient).DownloadFile('https://www.7-zip.org/a/7za920.zip', '%TEMP%\7z.zip'))"
powershell -Command "$shell = New-Object -ComObject Shell.Application; $zip_src = $shell.NameSpace('%TEMP%\7z.zip'); $zip_dest = $shell.NameSpace('%TEMP%'); $zip_dest.CopyHere($zip_src.Items(), 1044)"
powershell -Command "((new-object net.webclient).DownloadFile('http://repo.msys2.org/distrib/i686/msys2-base-i686-20161025.tar.xz', '%TEMP%\msys.tar.xz'))"
%TEMP%\7za.exe x %TEMP%\msys.tar.xz -so | %TEMP%\7za.exe  x -aoa -si -ttar >%TEMP%/7z-msys.log

REM First run is performed to setup the environment
%MD%\usr\bin\bash --login -i -c exit

@echo off
echo ^
if false; then ^
bitness=32; gcc=mingw-w64-i686-gcc; host=i686-w64-mingw32; ^
else ^
bitness=64; gcc=mingw-w64-x86_64-gcc; host=x86_64-w64-mingw32; ^
fi ^&^& ^
pacman --noconfirm -S tar make diffutils perl git bison flex $gcc ^&^& ^
export PATH=/mingw$bitness/bin:/usr/bin/core_perl:$PATH ^&^& ^
cd /src ^&^& ^
git clone https://github.com/postgres/postgres.git --branch REL_10_STABLE --depth 1 ^&^& ^
cd postgres ^&^& ^
./configure --host=$host --prefix=/c/pg10/ ^&^& ^
make -j4 ^

> %MD%\src\make_check.sh
%MD%\usr\bin\bash --login -i /src/make_check.sh