diff --git a/README.md b/README.md
index f6adf0b..0d890de 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,17 @@
 # Cross Build
 
 Cmake toolchain files for cross platform building on linux ci containers
+
+## Tools required
+
+### Ubuntu
+
+```bash
+apt install -y build-essential git cmake \
+               gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf \
+               gcc-aarch64-linux-gnu g++-aarch64-linux-gnu \
+               gcc-x86-64-linux-gnu g++-x86-64-linux-gnu \
+               gcc-i686-linux-gnu g++-i686-linux-gnu \
+               gcc-mingw-w64-x86-64 g++-mingw-w64-x86-64 \
+               gcc-mingw-w64-i686 g++-mingw-w64-i686
+```
diff --git a/cmake/windows-mingw-i386.cmake b/cmake/windows-mingw-i386.cmake
new file mode 100644
index 0000000..da23a4e
--- /dev/null
+++ b/cmake/windows-mingw-i386.cmake
@@ -0,0 +1,17 @@
+# Toolchain for cross-compiling to Windows 32-bit
+set(CMAKE_SYSTEM_NAME Windows)
+set(CMAKE_SYSTEM_PROCESSOR i686)
+
+set(CMAKE_C_COMPILER i686-w64-mingw32-gcc)
+set(CMAKE_CXX_COMPILER i686-w64-mingw32-g++)
+set(CMAKE_RC_COMPILER i686-w64-mingw32-windres)
+
+set(CMAKE_FIND_ROOT_PATH /usr/i686-w64-mingw32)
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+
+# Force static linking
+set(CMAKE_EXE_LINKER_FLAGS "-static -static-libgcc -static-libstdc++")
+