diff --git a/cmake/toolchain-mingw.cmake b/cmake/toolchain-mingw.cmake
new file mode 100644
index 0000000..68ee249
--- /dev/null
+++ b/cmake/toolchain-mingw.cmake
@@ -0,0 +1,12 @@
+# Simple toolchain file for cross-building Windows Puzzles on Linux
+# using MinGW (tested on Debian).
+
+set(CMAKE_SYSTEM_NAME Windows)
+set(CMAKE_SYSTEM_PROCESSOR x86_64)
+
+set(CMAKE_C_COMPILER  x86_64-w64-mingw32-gcc)
+set(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
+set(CMAKE_AR          x86_64-w64-mingw32-ar)
+set(CMAKE_RANLIB      x86_64-w64-mingw32-ranlib)
+
+add_compile_definitions(MINGW32_FIX)