AnnetteOS

this is a simply operating system for learning and practice purpose nothing special should be waited from this.

Development Environmemt.

Binutils GCC Make Grep Diffutils perl or Python asm nasm or gas vi, nano, vscode...

download SRC to Build a GCC Cross Compiler

• download Binutils from their FTP website https://ftp.gnu.org/gnu/binutils/
• download GCC from their FTP website https://ftp.gnu.org/gnu/gcc/

Install dependencies

debian, ubuntu base package manager.

sudo apt-get install bison flex libgmp3-dev libgmp-dev libmpc-dev libmpfr-dev texinfo libisl-dev

Create the Build environment for these tools.

these variables are use alongside the compilation, the we can move wherever we want to move it.

export PREFIX="$HOME/opt/cross"
export TARGET=i686-elf
export PATH="$PREFIX/bin:$PATH"

Build binutils

mkdir build-binutils
cd build-binutils
../binutils-x.y.z/configure --target=$TARGET --prefix="$PREFIX" --with-sysroot --disable-nls --disable-werror
make
make install

Build GCC

for example im build 13.2.0

configure --prefix=$PREFIX --target=$TARGET --disable-nls --enable-languages=c,c++ --without-headers --enable-interwork            --enable-multilib --with-gmp=/usr --with-mpc=/opt/local --with-mpfr=/opt/local
or 
# this is the one I used to build the cross compiler in this example.
../gcc-x.y.z/configure --target=$TARGET --prefix="$PREFIX" --disable-nls --enable-languages=c,c++ --without-headers

using GCC

remember to use this always, unless you change the sample setup.

export TARGET=i686-elf
$HOME/opt/cross/bin/$TARGET-gcc --version

Cross compile literature.

https://wiki.osdev.org/GCC_Cross-Compiler
https://wiki.osdev.org/Cross-Compiler_Successful_Builds

What next?

there would be a lot of things to do.

• try to run a simple boot loader. 1

Install Real Hardware and test it...

run:

make install

if it is the first time you do it, edit the Grub.cfg file locate at /boot/grub/grub.cfg

locate the end timeout secuence.. and add the next entry, be carefully not delete something or create a backup...

#### Begin Annette.bin

menuentry 'AnnetteOS v0.0.1'{
    multiboot /boot/annette.bin
    boot
}

#### END EDITION OF ANNETTE.BIN