/tmp/ecp.* created during kernel build?

[Roger Marquis]

Found a couple of ecp binaries in /tmp, apparently created concurrent
with an 11.0 x86_64 kernel build.  Anyone else seen this?  Could they
be related to a "make buildkernel"?

# ls -l /tmp/ecp*
  -rw-r--r--   1 root  wheel  4229 Dec 27 06:21 ecp.Aak1ruL8
  -rw-r--r--   1 root  wheel  2371 Dec 27 06:21 ecp.8Wba0TzO

# file /tmp/ecp.*
  /tmp/ecp.8Wba0TzO: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped
  /tmp/ecp.Aak1ruL8: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped

# strings /tmp/ecp.Aak1ruL8
  belX
  __vdso_clock_gettime
  __vdso_getcpu
  __vdso_gettimeofday
  __vdso_time
  linux_platform
  linux_rt_sigcode
  linux_vdso.so.1
  LINUX_2.6
  x86_64
  .symtab
  .strtab
  .shstrtab
  .gnu.hash
  .dynsym
  .dynstr
  .gnu.version
  .gnu.version_d
  .eh_frame_hdr
  .eh_frame
  .dynamic
  .data
  .text
  .endrtsigcode
  .getip
  .startrtsigcode
  _DYNAMIC
  _GLOBAL_OFFSET_TABLE_
  clock_gettime
  LINUX_2.6
  __vdso_gettimeofday
  __vdso_getcpu
  gettimeofday
  time
  getcpu
  __vdso_clock_gettime
  linux_platform
  linux_rt_sigcode
  __vdso_time

# strings /tmp/ecp.8Wba0TzO
  linux32_rt_sigcode
  linux32_sigcode
  linux32_vsyscall
  linux_platform
  linux32_vdso.so.1
  LINUX_2.5
  i686
  .shstrtab
  .gnu.hash
  .dynsym
  .dynstr
  .gnu.version
  .gnu.version_d
  .eh_frame_hdr
  .eh_frame
  .dynamic
  .data
  .text

Is there anything else that might trace the origin of these files other
than possibly another buildkernel?

Thanks,
Roger