To fix the installation you can follow this github post.

To use the Intel Galileo boards with Arch Linux install the Arduino IDE and download the Galileo tools package via 'Tools->Board->Boards Manager'. Instructions can be found here.Īlternative you can install arduino-pinoccio AUR. Pinoccio Scouts can also be programmed using the Arduino IDE. You can always switch between the different cores in the 'Tools>Board' menu. If you still want to use the older arduino-core you need to install it in the board manager. To use AVR boards such as the Arduino Uno you can install arduino-avr-core optionally to use Arch Linux upstream avr-gcc instead of the bundled older avr-core. However, it may be possible to adapt some of this for the new IDE. The following section only applies to the 1.x version of the IDE. You may need to load the cdc_acm module.Add your user to the uucp user group (more information in the #Accessing serial section).The offline documentation for the 1.x IDE can be installed via arduino-docs. Install either arduino for the original 1.x version of the IDE, arduino-cli for the official CLI or arduino-ide-bin AUR for the new 2.x release of the IDE.Equally the user may use a compiler and programmer of choice to program the microcontroller. Writing, compiling and uploading your code is facilitated by using the official Arduino IDE, which is available in the official repositories. Examples are interfacing over UART using a serial monitoring program, or programming the microcontroller. Once hooked up and configured the user may perform read/write tasks over the established serial connection. It is intended for artists, designers, hobbyists, and anyone interested in creating interactive objects or environments. Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software.

Error compiling for board leonardo