rustup crashes (detects wrong cpu?) on Scaleway ARM7 server

[sourcefrog]

% curl https://sh.rustup.rs -sSf | sh -s -- --help
info: downloading installer
Illegal instruction
rustup: command failed: /tmp/tmp.AJc37brj9i/rustup-init --help

The cpu here is a ARMv7 Processor rev 2 (v7l) but apparently without NEON extensions, so that may be the problem.

[sourcefrog]

It seems to be detecting armv7-unknown-linux-gnueabihfbut https://users.rust-lang.org/t/rust-web-development-hosting/5975/3 suggests that it needs arm-unknown-linux-gnueabihf instead.

[sourcefrog]

arm-unknown-linux-gnueabihf does work here so it sounds like the shell script is just detecting the wrong thing.

[sourcefrog]

I think it would work to look at the flags in cpuinfo and see if the cpu has neon.

[sourcefrog]

cpuinfo contains

processor       : 0
model name      : ARMv7 Processor rev 2 (v7l)
BogoMIPS        : 50.00
Features        : half thumb fastmult vfp edsp thumbee vfpv3 tls idiva idivt vfpd32 lpae
CPU implementer : 0x56
CPU architecture: 7
CPU variant     : 0x2
CPU part        : 0x584
CPU revision    : 2

I'll send you a patch for this.