troubleshooting.md

+# Troubleshooting
+
+This page provides troubleshooting guides concerning build problems.
+
+## make: command not found
+
+If you see this error message, it means that you don't have the `build-essential` package installed. Please install it by typing
+
+```bash
+root@raspberry:~# apt install build-essential
+```
+
+## gcc: command not found
+
+The same as above.
+
+## make: /lib/modules/.../build: No such file or directory. Stop.
+
+Please install your current linux headers by typing
+
+```bash
+root@raspberry:~# apt install linux-headers-$(uname -r)
+```
+
+If the error still occurs, you have to link the linux headers source tree to the build directory manually:
+
+```bash
+root@raspberry:~# ln -s /usr/src/linux-headers-$(uname -r) /lib/modules/$(uname -r)/build
+```
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