More debugging.

mingw.yml

@@ -30,9 +30,12 @@ build_script:
     - cmd: set   CMD=%CMD%; cd build    
     - cmd: set   CMD=%CMD%; cmake .. -G 'Unix Makefiles' -DCMAKE_CXX_STANDARD=98 -DCMAKE_CXX_FLAGS=-Wno-deprecated
     - cmd: echo %CMD%
+    - cd %APPVEYOR_BUILD_FOLDER%
     - cmd: C:\msys64\usr\bin\bash -c "%CMD%"
     - cmd: set   CMD=which python3 python
     - cmd: set   CMD=%CMD%; python --version
-    - cmd: set   CMD=%CMD%; bin/exiv2 --verbose --version
+    - cmd: set   CMD=%CMD%; build/bin/exiv2 --verbose --version; pwd ; ls -l
+    - cmd: echo %CMD%
+    - cd %APPVEYOR_BUILD_FOLDER%
     - cmd: C:\msys64\usr\bin\bash -c "%CMD%"
     - cmd: bin