Package gcc-aarch64-linux-gnu is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
Package gcc-arm-linux-gnueabihf is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'gcc-arm-linux-gnueabihf' has no installation candidate
E: Package 'gcc-aarch64-linux-gnu' has no installation candidate
E: Unable to locate package libc6:i386
E: Unable to locate package lib32stdc++6
E: Couldn't find any package by regex 'lib32stdc++6'