linuxptp: fix do_compile error

with make 4.4, linuxptp do_compile will failed with error:
In file included from clock.c:35:
missing.h:61:9: error: redeclaration of enumerator 'HWTSTAMP_TX_ONESTEP_P2P'
   61 |         HWTSTAMP_TX_ONESTEP_P2P = 3,
      |         ^~~~~~~~~~~~~~~~~~~~~~~
In file included from clock.c:21:
/buildarea2/WRLCD_Regression/Rerun/build_dir/11201532-build_scp_world_Feature_Test/qemux86-64-standard-std-OE/build/tmp-glibc/work/core2-64-wrs-linux/linuxptp/3.1.1-r0/recipe-sysroot/usr/include/linux/net_tstamp.h:128:9: note: previous definition of 'HWTSTAMP_TX_ONESTEP_P2P' with type 'enum hwtstamp_tx_types'
  128 |         HWTSTAMP_TX_ONESTEP_P2P,
      |

Following change of make 4.4 changes behavior of shell function:
* WARNING: Backward-incompatibility!
  Previously makefile variables marked as export were not exported to commands
  started by the $(shell ...) function.  Now, all exported variables are
  exported to $(shell ...).

Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

Backport of commit 05c1003c4 ("linuxptp: fix do_compile error").
This is present in dunfell/kirkstone as well. If net_tstamp.h of the
build host disagrees with net_tstamp.h of the OE kernel or I remove
the build host's net_tstamp.h do_compile fails.

Changed Upstream Status to Backport with the git sha as the commit is
now applied upstream.

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

0 files changed, 0 insertions, 0 deletions