[Buildroot] [Bug 6404] New: Buildroot's coreutils 'uname -p' reports 'Unknown' on recent ARM kernels

bugzilla at busybox.net bugzilla at busybox.net
Thu Aug 1 04:30:02 UTC 2013


           Summary: Buildroot's coreutils 'uname -p' reports 'Unknown' on
                    recent ARM kernels
           Product: buildroot
           Version: 2013.05
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
        AssignedTo: unassigned at buildroot.uclibc.org
        ReportedBy: daniel.price at gmail.com
                CC: buildroot at uclibc.org
   Estimated Hours: 0.0

Buildroot's coreutils uname(1) command has a special patch applied as part of
buildroot.  When you run 'uname -p', it tries to print out extended information
about the processor you are running.  It does this by parsing /proc/cpuinfo. 
I'm not sure of the provenance of this enhancement, but you can read the code
in package/coreutils/coreutils-uname.patch.

However, on recent ARM kernels, the format of /proc/cpuinfo has changed
incompatibly.  Several packages subsequently break.  I believe the commit in
question is this:

So, I recently discovered that when matched with recent ARM kernels, uname -p
on buildroot is simply reporting 'Unknown'.  I'm not really sure what the right
answer might be.  The code doesn't really seem set up to parse the
/proc/cpuinfo file in more than one way.

I am presently using buildroot 2012.11, but the code seems to be the same in
the latest release as well.

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