I want to build a c file based on BlueZ but seems no bluetooth.h file in my system.
fatal error: bluetooth/bluetooth.h: No such file or directory
I am sure the bluetooth dongle is running correctly and I have built Bluez successfully.
Update
For my case, I find the bluetooth.h in /user/include/bluetooth folder
You need to install libbluetooth-dev package for compiling your code
sudo apt-get install libbluetooth-dev
That should install the bluetooth header files.