Index: appveyor.yml
===================================================================
diff -u -N -r757b2fcc3c0bcb5065fed0db6143d4df78d74989 -r72cd24a28889128ae250a666843f9a6cf9aaa15d
--- appveyor.yml	(.../appveyor.yml)	(revision 757b2fcc3c0bcb5065fed0db6143d4df78d74989)
+++ appveyor.yml	(.../appveyor.yml)	(revision 72cd24a28889128ae250a666843f9a6cf9aaa15d)
@@ -60,6 +60,8 @@
   # - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "cd && echo \"export PATH=/c/msys64/mingw64/bin:/c/msys64/usr/bin:\$PATH; export MSYSTEM=MINGW64; export MINGW_PREFIX=/c/msys64/mingw64; \" >> .profile"
   - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "cd && echo \"export PATH=/c/projects/nsf-2ylk0/mingw64/bin:\$PATH; alias make='mingw32-make'; shopt -s expand_aliases; \" >> .profile"
   - if "%TOOLCHAIN%" == "nmake-tea" call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\vcvars64.bat"
+  - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "sh --version"
+  - if "%TOOLCHAIN%" == "autoconf-tea" bash -lc "make --version"
   - tclkit.exe apps/build.tcl %CD% %APPVEYOR_BUILD_FOLDER% %TCLTAG% %TOOLCHAIN%
 
 on_failure: