[Bug 1564518] Re: Illegal instruction when cross compiling for armv5

[Michael Hudson-Doyle]

Can you provide some more details?

 * Source of hello.go (although I can probably guess this one :-)
 * Output of "GOOS=linux GOARCH=arm GOARM=5 go build -x hello.go" for the packaged go and the official go
 * Binaries produced by the two above commands

I don't have access to any armv5 hw but I'll see what I can do.

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Title:
  Illegal instruction when cross compiling for armv5

Status in golang-1.6 package in Ubuntu:
  New

Bug description:
  I installed the golang-1.6 package for trusty and tried to cross-
  compile a trivial hello world program for armv5

      GOOS=linux GOARCH=arm GOARM=5 go build hello.go

  When running the program on an actual arm machine though, the
  resulting hello executable crashes with "Illegal Instruction".

  This same command with the official golang 1.6 Linux binary from the
  go website creates a working executable, so I am guessing that there
  is some compile option that is different in Ubuntu and that it
  probably has to to with floating points. armv5 should be using soft
  float instead of VFP.

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