Arduino on gentoo

Well well I have finally managed to compile and install an AVR toolchain that works with Arduino on my Gentoo workstation. This was after 3 attempts to install the AVR-GCC toolchain. After installing, it would never compile without errors. Some people have written guides on how to install the toolchain, but they never worked for me. The last one I tried was this Italian guide. After going through all the steps twice I still didn’t have a working compiler. And I couldn’t figure out if it was the compiler or the Arduino libraries causing the errors. A couple of days ago I noticed that the latest GCC version 4.7.1 was available in portage, gentoo’s package manager. So I unmasked the necessary packages and installed them. I first tried compiling a simple blink sketch in Arduino 0023, but I just got a bunch of errors. So I installed the latest Arduino 1.0.1 version and suddenly everything compiled without errors. My toolchain now consists of AVR-GCC 4.7.1, AVR-libc 1.8.0 and binutils 2.21.1. I will now have to update all my libraries and sketches so that they will compile in Arduino 1.0.1. Quite a few things have changed from Arduino 0023, the version I was using until now. If you don’t want to go through all the trouble and just want a working compiler you can install these binary packages. They work with Arduino 0023 but not with the 1.0 or later version…