I spent a week trying to build a cross-compiler for avr. The problem is that avr-studio for mac m1 is here, you can download it, but when you try to install packages (for example with the avr compiler), the x86_64 version is downloaded. I don’t have rosetta (for fundamental and some practical reasons), so I had to build gcc manually. Surelly, it was done. In my case, gcc compilation took 45 minutes clear time.
make BOOT_LDFLAGS=-Wl,-headerpad_max_install_names 1855.47s user 546.72s system 87% cpu 45:32.02 total
Step by step instruction
- First, you should compile binutils.
Download, in my case binutils-2.44.tar.bz2, and unpack.
Better to create new directory and run configure script inside.
cd binutils-2.44
mkdir build
cd build
../configure --prefix=/usr/local/avr-gcc --target=avr --enable-multilib --disable-libssp
make
make check
sudo make install
- Compile dependences
gmp, mpfr, mpc, isl (0.14 in my case for gcc-14)
That is simple, so skip explanation.
- Compile gcc
Download or clone from git(hub), build in separate directory
git clone git://gcc.gnu.org/git/gcc.git
cd git
git checkout remotes/origin/releases/gcc-14
mkdir build
cd build
../configure --prefix=/usr/local/avr-gcc --target=avr --enable-languages=c,c++ --disable-libssp --with-isl=/usr/local/avr-gcc --disable-nls --disable-shared --disable-threads --disable-libgomp --with-dwarf2 --with-avrlibc --with-system-zlib
time make BOOT_LDFLAGS=-Wl,-headerpad_max_install_names
make check
sudo make install
Good luck!