gcc-arm-none-eabi-source 15:5.4.1+svn241155-1 (arm64 binary) in ubuntu bionic

 Bare metal compiler for embedded ARM chips using Cortex-M, Cortex-R and
 Cortex-A processors.
 This package is based on the GNU ARM toolchain provided by ARM.
 .
 This package contains the sources and patches which are needed
 to build the GNU Compiler Collection (GCC) for embedded ARM chips.