diff --git a/CMakeLists.txt b/CMakeLists.txt
index f657fd5cc3..e10ab3d832 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -648,7 +648,7 @@ if(PYTHONINTERP_FOUND)
   endif()
 endif()
 
-if (NOT PYTHONINTERP_FOUND)
+if(NOT PYTHONINTERP_FOUND AND NOT GNUWIN32_DIR)
   unset(PYTHON_EXECUTABLE CACHE)
   unset(PYTHON_VERSION_MAJOR)
   unset(PYTHON_VERSION_MINOR)
diff --git a/development/cmake/mingw.bat b/development/cmake/mingw.bat
new file mode 100644
index 0000000000..985160dea3
--- /dev/null
+++ b/development/cmake/mingw.bat
@@ -0,0 +1,28 @@
+echo off
+
+set PATH=C:\Qt\Qt5.6.0\5.6\mingw492_32\bin;%PATH%
+set PATH=C:\Qt\Qt5.6.0\Tools\mingw492_32\bin;%PATH%
+
+set LYX_SOURCE=%~DP0..\..
+set LYX_BUILD=%LYX_SOURCE%\..\compile-mingw
+
+echo LyX source: %LYX_SOURCE%
+echo LyX build : %LYX_BUILD%
+
+set GNUWIN32_DIR=%LYX_SOURCE%\..\msvc2010-deps
+set PATH="%GNUWIN32_DIR%\deps20\Python";%PATH%
+
+mkdir %LYX_BUILD%
+rmdir /s/q %LYX_BUILD%
+mkdir %LYX_BUILD%
+
+cd %LYX_BUILD%
+cmake %LYX_SOURCE% -GNinja -DLYX_3RDPARTY_BUILD=ON -DLYX_ENABLE_CXX11=ON -DLYX_USE_QT=QT5 -DLYX_MERGE_REBUILD=1 -DLYX_MERGE_FILES=1 -DLYX_NLS=1 -DLYX_INSTALL=1 -DLYX_RELEASE=1 -DLYX_CONSOLE=OFF 
+
+ninja
+ninja install
+
+cd ..
+
+goto :eof
+:eof