Hacking

for how to mod. the SConstruct for your -custom- arduino.

Find out how genuine arduino IDE's work

Add following configs to:

• ~/.arduino/preferences.txt (Linux)

• ~/Library/Arduino/preferences.txt (OSX)

  build.verbose=true upload.verbose=true

and build&upload in arduino IDE. you'll get verbose output of building and uploading process.

Practice

for genuine arduino with atmega328. I can find...

avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections \
-mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=18 \
-I/usr/share/arduino/hardware/arduino/cores/arduino \
/tmp/.../BlinkWithoutDelay.cpp \
-o/tmp/.../BlinkWithoutDelay.cpp.o

avrdude -v -v -v -v -patmega328p -carduino -P/dev/ttyUSB0 -b57600 -D \
-Uflash:w:/tmp/.../BlinkWithoutDelay.cpp.hex:i