Hola Fernando,

-={ ':read !file /lib/libc-2.28.so' starts }=-
/lib/libc-2.28.so: ELF 64-bit LSB pie executable, ARM aarch64, version 1 
(GNU/Linux), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, for 
GNU/Linux 3.7.0, stripped
-={ ':read !file /lib/libc-2.28.so' ends }=-

-={ ':read !gcc -v' starts }=-
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/aarch64-raspi3b+-linux-gnu/8.2.0/lto-wrapper
Target: aarch64-raspi3b+-linux-gnu
Configured with: ../configure --prefix=/usr --disable-multilib 
--with-system-zlib --enable-languages=c,c++ --disable-bootstrap 
--build=aarch64-raspi3b+-linux-gnu
Thread model: posix
gcc version 8.2.0 (GCC)
-={ ':read !gcc -v' ends }=-

The above still needs to be bootstrapped but given the above it looks like it 
is now extremely doable.

-={ ':read !uname -a' starts }=-
Linux armando.smrfish.net 4.19.1-v8+ #1 SMP PREEMPT Thu Nov 8 01:33:25 UTC 2018 
aarch64 GNU/Linux
-={ ':read !uname -a' ends }=-

The above also needs to be redone as that build was from a crosscompiler.  This 
*needs* to be completely native.  Definetly better than just 'fine'.  :::evil 
grin:::

La vida es buena,
Maurice Kinal

... No llores por mi tengo vi.
--- GNU bash, version 4.4.23(1)-release (aarch64-raspi3b+-linux-gnu)