Pi4, arm64, 7.3 build fails

Hi, I'm a newbie, having build problems on a Raspberry Pi 4, 4GB, running ubuntu 19.10, arm64 OS.

I'm trying to run minecraft using this install guide: https://www.astralinternet.com/blog/en/build-minecraft-pocket-edition-server-ubuntu/
I got to the point where I'm running the line -
"wget -q -O - https://get.pmmp.io | bash -s -"
but get an error around build not supported on this platform (see attached image), and the screen application just terminates.
Thanks in advance for any help

 

What is the output of start.sh?

 

Nothing. It clears the screen then terminates.

 

Even when you launch it normally, without "screen"?

 

$ ./start.sh
./start.sh: line 60: /home/minecraft/bin/php7/bin/php: cannot execute binary file: Exec format error
./start.sh: line 60: /home/minecraft/bin/php7/bin/php: Success

 

Can you tell me the output of these three commands?

Code:

uname -a
file /home/minecraft/bin/php7/bin/php
readelf -h /home/minecraft/bin/php7/bin/php

 

Sure...

ubuntu@ubuntu:~$ uname -a
Linux ubuntu 5.3.0-1023-raspi2 #25-Ubuntu SMP Tue Apr 14 11:35:19 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux

ubuntu@ubuntu:~$ file /home/minecraft/bin/php7/bin/php
/home/minecraft/bin/php7/bin/php: ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=d18a62e10177de696f781de4a944beaf6807eba4, with debug_info, not stripped

ubuntu@ubuntu:~$ readelf -h /home/minecraft/bin/php7/bin/php
ELF Header:
Magic: 7f 45 4c 46 02 01 01 03 00 00 00 00 00 00 00 00
Class: ELF64
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - GNU
ABI Version: 0
Type: EXEC (Executable file)
Machine: Advanced Micro Devices X86-64
Version: 0x1
Entry point address: 0x494030
Start of program headers: 64 (bytes into file)
Start of section headers: 14319440 (bytes into file)
Flags: 0x0
Size of this header: 64 (bytes)
Size of program headers: 56 (bytes)
Number of program headers: 10
Size of section headers: 64 (bytes)
Number of section headers: 40
Section header string table index: 37
ubuntu@ubuntu:~$

 

That's odd, even though it claimed to have compiled for the target architecture, the binary seems to be for x86 instead of ARM.
Makee a new folder and try to compile the binary manually there with the following commands:

Code:

wget https://github.com/pmmp/php-build-scripts/raw/master/compile.sh
chmod +x compile.sh
./compile.sh -j 4 -f -u -g -l