Getting Arduino compiler erros

[rm-rf]

Hi I've been trying to program my arduino uno with this Makefile:

#! /usr/bin/make

C_OPTS=-I ./include
CC=avr-gcc $(C_OPTS)
CMP=$(CC) -c $^-o $@
CMB=$(CC) $^ -o $@

upload: main
        avrdude $^

main:  arm.cpp
        $(CMB)

and the following program:

void setup()
{
        pinMode(3, OUTPUT);
}

void loop()
{
        digitalWrite(3, HIGH);
}

It worked fine with the compile automagically defining everything on windows, yet I keep getting this error:

avr-gcc -I ./include   arm.cpp -o main
arm.cpp: In function 'void setup()':
arm.cpp:4:13: error: 'OUTPUT' was not declared in this scope
arm.cpp:4:19: error: 'pinMode' was not declared in this scope
arm.cpp: In function 'void loop()':
arm.cpp:9:18: error: 'HIGH' was not declared in this scope
arm.cpp:9:22: error: 'digitalWrite' was not declared in this scope
make: *** [main] Error 1

shell returned 2

[JohnGraham]

void setup()
{
        pinMode(3, OUTPUT);
}

arm.cpp:4:13: error: 'OUTPUT' was not declared in this scope

The compiler hasn't seen "OUTPUT", "pinMode" etc. before, and so doesn't know what it is/where to find it/what to do with them. They'll be in a header file that you need to include, which you do like (e.g. to include "header.h"):

#include <header.h>

You just need to find out which header(s) - look at the definition of pinMode() etc. and it should tell you.

[rm-rf]

Yes I already kne that. Like I said: on windows I don't need to #include anything, it's just predefined. So my question is what headers do I include?

[rm-rf]

D'oh. Just found out what the problem is. I just needed to go here: Arduino Playground - CommandLine and follow the instructions.