Clone of official tools

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+# CLion CMakeLists.txt Generator
+
+This exporter generates a CMakeLists.txt file that can be used to
+develop mbed using [IntelliJ CLion](https://www.jetbrains.com/clion/).
+
+It will not create a functional CMake build system that mimics the
+mbed build system, but rather uses the mbed-cli itself to compile
+the targets. The generated files help CLion to understand the
+includes and dependencies of your code.
+
+Run the following command to create/overwrite your CMakeLists.txt.
+```
+mbed export -i cmake_gcc_arm
+```
+> Run the command again if files or libraries have been added or removed.
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