Maybe aarch64-linux-gnu-gcc is not installed. Try

sudo apt-get install gcc-aarch64-linux-gnu

1. Download the source code for the gcc compiler from the official website. You can download the latest version from here: https://ftp.gnu.org/gnu/gcc/gcc-11.2.0/gcc-11.2.0.tar.xz

wget https://ftp.gnu.org/gnu/gcc/gcc-11.2.0/gcc-11.2.0.tar.xz

2. Extract the source code:

   tar xf gcc-11.2.0.tar.xz

3. Change to the directory where the source code was extracted:

   cd gcc-11.2.0

4. Configure the build:

   ./configure --target=aarch64-linux-gnu --prefix=/usr/local

5. Build and install the compiler:

   make -j4 && sudo make install This will build and install the aarch64-linux-gnu-gcc compiler into the /usr/local/bin directory.

6. Verify that aarch64-linux-gnu-gcc is installed:

   aarch64-linux-gnu-gcc --version This should display the version of aarch64-linux-gnu-gcc that is installed on your system.