Building avr-gcc (gcc version 2.95.2)


Install and setup AVR assembler and linker.
  avr-gcc can work with AVA or with GNU binutils (GNU as and GNU ld).
- ava-0.3b-0801.src.tar.gz or later version.
- binutils-2.9.5.0.13-avr-patch-1.1.gz or later version.

To patch gcc-2.95.2:
	% tar -xzf gcc-core-2.95.2.tar.gz
	% cd gcc-2.95.2
	% gzip -dc gcc-core-2.95.2-avr-patch-1.1.gz | patch -p1

To configure gcc-2.95.2:
	% cd gcc-2.95.2
	% configure --target=avr

If you have /usr/local/lib/gcc-lib/avr then:
	% rm -fr /usr/local/lib/gcc-lib/avr

To compile gcc-2.95.2 with `ava' as AVR assembler:
	% cd gcc-2.95.2
	% make TARGET_ASSEMBLER=ava

To compile gcc-2.95.2 with `avr-binutils':
	% cd gcc-2.95.2
	% make

To install gcc-2.95.2 with `ava' as AVR assembler:
	% cd gcc-2.95.2
	% make TARGET_ASSEMBLER=ava install

To install gcc-2.95.2 with `avr-binutils':
	% cd gcc-2.95.2
	% make install


Now you can run `avr-gcc'.

Use option `-mava' for the `ava' assembler.

avr-gcc -O  (optimize. Some times best result)
avr-gcc -Os  (optimize by size)
avr-gcc -O9 (optimize by speed) (can generate more optimal code for size)