Adding Aarch64 support, for Travis

[advancedwebdeveloper]

For supporting multi-arch cross-compilation. But that is not solving my issues, for on-premise compilation (where host arch=guest arch, i.e. arm64)

[mrutkows]

Interestingly, we are already producing the arm64 convenience binaries (even before adding this to the bash script) run on every merged PR build (i.e., "latest")... https://github.com/apache/openwhisk-wskdeploy/releases/tag/latest

[advancedwebdeveloper]

I can tell that both https://github.com/apache/openwhisk-wskdeploy/releases/download/latest/openwhisk_wskdeploy-latest-linux-arm.tgz and https://github.com/apache/openwhisk-wskdeploy/releases/download/latest/openwhisk_wskdeploy-latest-linux-arm64.tgz contain executables, which run on

lscpu

Architecture: aarch64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 32 On-line CPU(s) list: 0-31 Thread(s) per core: 1 Core(s) per socket: 32 Socket(s): 1 NUMA node(s): 1 Vendor ID: APM Model: 2 Model name: X-Gene Stepping: 0x3 CPU max MHz: 3300.0000 CPU min MHz: 363.9700 BogoMIPS: 90.00 L1d cache: 1 MiB L1i cache: 1 MiB L2 cache: 4 MiB NUMA node0 CPU(s): 0-31 Vulnerability Itlb multihit: Not affected Vulnerability L1tf: Not affected Vulnerability Mds: Not affected Vulnerability Meltdown: Mitigation; PTI Vulnerability Spec store bypass: Vulnerable Vulnerability Spectre v1: Mitigation; __user pointer sanitization Vulnerability Spectre v2: Vulnerable Vulnerability Srbds: Not affected Vulnerability Tsx async abort: Not affected Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid

[mrutkows]

That indicates an Applied Micro chip from 2011... and whose X-Gene3 line was discontinued in 2016. Worldwide they only shipped 25,000 units across the 3 generations. No wonder it is reporting an older/outmoded architecture code. with "Core(s) per socket: 32" what manufacturer/model machine is this?