looking for arch in the wrong places

[Steve Kelem]

I'm running Ubuntu 16.10 x86_64. The configure script has the lines:

/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
/bin/arch              = `(/bin/arch) 2>/dev/null`

and prints:
## --------- ##
## Platform. ##
## --------- ##

hostname = green76
uname -m = x86_64
uname -r = 4.8.0-26-generic
uname -s = Linux
uname -v = #28-Ubuntu SMP Tue Oct 18 14:39:52 UTC 2016

/usr/bin/uname -p = unknown
/bin/uname -X     = unknown

/bin/arch              = unknown
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo      = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

However, arch is in /usr/bin/arch, and does not take a -k argument:
arch: invalid option -- 'k'
Try 'arch --help' for more information.

Usage: arch [OPTION]...
Print machine architecture.

      --help     display this help and exit
      --version  output version information and exit

Sincerely,

Steve Kelem