diff --git a/toolchain-m258ke.cmake b/toolchain-m258ke.cmake
new file mode 100644
index 0000000..3345190
--- /dev/null
+++ b/toolchain-m258ke.cmake
@@ -0,0 +1,16 @@
+# This will tell CMake that we are cross compiling
+set(CMAKE_SYSTEM_NAME Generic)
+set(CMAKE_SYSTEM_VERSION 1)
+set(CMAKE_SYSTEM_PROCESSOR arm)
+set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
+
+# Make sure it knows what binaries to use
+set(CMAKE_AR arm-none-eabi-ar)
+set(CMAKE_ASM_COMPILER arm-none-eabi-gcc)
+set(CMAKE_C_COMPILER arm-none-eabi-gcc)
+set(CMAKE_CXX_COMPILER arm-none-eabi-g++)
+set(CMAKE_LINKER arm-none-eabi-ld)
+set(CMAKE_OBJCOPY arm-none-eabi-objcopy)
+set(CMAKE_RANLIB arm-none-eabi-ranlib)
+set(CMAKE_SIZE arm-none-eabi-size)
+set(CMAKE_STRIP arm-none-eabi-strip)