Support Arduino

[dylanmckay]

We need to be able to compile the entire Arduino core.

Note that USB was not enabled when I attempted to build these files, so many files have been #ifdef'd out because -DUSBCON was not defined.

C++ files (and whether we can compile them without errors):

• CDC.cpp
• HID.cpp
• HardwareSerial.cpp
• HardwareSerial0.cpp
• HardwareSerial1.cpp
• HardwareSerial2.cpp
• HardwareSerial3.cpp
• IPAddress.cpp
• Print.cpp
• Stream.cpp
• Tone.cpp
• USBCore.cpp
• WInterrupts.c
• WMath.cpp
• WString.cpp
• abi.cpp
• hooks.c
• main.cpp
• new.cpp
• wiring.c
• wiring_analog.c
• wiring_digital.c
• wiring_pulse.c
• wiring_shift.c

Here is a Gist containing all of the C++ Arduino core files compiled into LLVM IR.

[paulobarcelos]

+1

[dylanmckay]

There's only one file left to fix - Stream.cpp - for which I have a fix, I just need to update a few tests.

[dylanmckay]

As of eb79a90 (which was blocking Stream.cpp), we can now completely compile the Arduino core.

[dylanmckay]

This is not quite true as of today - see #149.