Index: appveyor.yml
===================================================================
diff -u
--- appveyor.yml	(revision 0)
+++ appveyor.yml	(revision c216c59269cbbb72886eb56552cd87b0a3748cce)
@@ -0,0 +1,24 @@
+image: Visual Studio 2017
+
+cache:
+- x86_64-8.1.0-release-win32-seh-rt_v6-rev0.7z
+
+environment:
+  MINGW_DIR: mingw64
+  MINGW_URL: https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/8.1.0/threads-win32/seh/x86_64-8.1.0-release-win32-seh-rt_v6-rev0.7z
+  MINGW_ARCHIVE: x86_64-8.1.0-release-win32-seh-rt_v6-rev0.7z
+  TCLKIT_URL: 
+  TCLKIT: tclkit.exe
+  matrix:
+  - TCLTAG: core-8-6-8
+  - TCLTAG: core-8-6-branch
+
+install:
+  - if not exist "%MINGW_ARCHIVE%" appveyor DownloadFile "%MINGW_URL%" -FileName "%MINGW_ARCHIVE%"
+  - 7z x -y "%MINGW_ARCHIVE%" > nul
+  - appveyor DownloadFile "%TCLKIT_URL%" -FileName "%TCLKIT%"
+  - set Path=%CD%\%MINGW_DIR%\bin;%Path%
+
+build_script:
+  - tclkit.exe apps/build.tcl %CD% %TCLTAG%
+  
\ No newline at end of file