pass board type from boards.txt [imported]

[cmaglie]

This is Issue 308 moved from a Google Code project.
Added by 2010-07-30T17:41:03.000Z by mark.l.s...@gmail.com.
Please review that bug for more context and additional comments, but update this bug.

Original labels: Type-Enhancement, Priority-Medium

Original description

What change would like to see?

Something that I think is desperately needed is a way to pass a #define from the boards.txt file to the compiler.
For example

arduino.build.define=BOARD_MEGA1280

And allow for as many of these, then would then be passed to the compiler as -DBOARD_MEGA1280

Why?

There are many boards that use the same CPU but have different capabilities. This would allow easier pre-processing in the various files

Would this cause any incompatibilities with previous versions? If so, how
can these be mitigated?

No issues at all.

[cmaglie]

This was introduced from 1.5.3, the symbol available at compile time is:

ARDUINO_{board}

for example the Arduino Uno will have:

ARDUINO_AVR_UNO

The value is defined through the build.board key in boards.txt:

Arduino/hardware/arduino/avr/boards.txt

Line 62 in 8e7133e

uno.build.board=AVR_UNO