Halo Free!   
      
   -={ ':read !gcc -march=native -Q --help=target' starts }=-   
   The following options are target specific:   
     -mabi=ABI                   		lp64   
     -march=ARCH                 		armv8-a+crc   
     -mbig-endian                		[disabled]   
     -mbionic                    		[disabled]   
     -mcmodel=                   		small   
     -mcpu=CPU                   		   
     -mfix-cortex-a53-835769     		[enabled]   
     -mfix-cortex-a53-843419     		[enabled]   
     -mgeneral-regs-only         		[disabled]   
     -mglibc                     		[enabled]   
     -mlittle-endian             		[enabled]   
     -mmusl                      		[disabled]   
     -momit-leaf-frame-pointer   		[enabled]   
     -moverride=STRING           		   
     -mpc-relative-literal-loads 		[enabled]   
     -msign-return-address=      		none   
     -mstrict-align              		[disabled]   
     -msve-vector-bits=N         		scalable   
     -mtls-dialect=              		desc   
     -mtls-size=                 		24   
     -mtune=CPU                  		   
     -muclibc                    		[disabled]   
      
     Known AArch64 ABIs (for use with the -mabi= option):   
       ilp32 lp64   
      
     Supported AArch64 return address signing scope (for use with -   
   sign-return-address= option):   
       all non-leaf none   
      
     The code model option names for -mcmodel:   
       large small tiny   
      
     The possible SVE vector lengths:   
       1024 128 2048 256 512 scalable   
      
     The possible TLS dialects:   
       desc trad   
   -={ ':read !gcc -march=native -Q --help=target' ends }=-   
      
   For the CPU in both -mcpu and -mtune cortex-a53 is/was being deployed.  Also   
   worth mentioning is that "-j 4" works EXCEPT when building cmake and for that   
   "-j 3" fixed the fatal issue.  Also, also, for some source, cmake for   
   instance, --build=aarch64-unknown-linux-gnu is/was needs to be passed to   
   configure in order to successfully build.  Other than those few cases the new   
   native aarch64-raspi3b+-linux-gnu is more than just fine.  I just did a search   
   for aarch64-raspi3b+-linux-gnu and near as I can tell I am the only one using   
   it so if you're looking to replicate I would advise using aarch6   
   -unknown-linux-gnu instead and keep -march=armv8-a+crc, and -mtune=cortex-a53   
   and/or -cpu=cortex-a53 for optimizations for the raspberry pi 3b+.   
      
   La vida es buena,   
   Maurice   
      
   ... No llores por mi tengo vi.   
   --- GNU bash, version 5.0.0(1)-beta2 (aarch64-raspi3b+-linux-gnu)   
    * Origin: Little Mikey's EuroPoint - Ladysmith BC, Canada (2:280/464.113)