[OE-core] [PATCH 0/6 V2] ccache.bbclass: Refactor it to make it more reliable

[Robert Yang]

* V2
  - Fix comments from Martin Jansa and Martin Hundebøll.
  - Fix RP's comments:
    1) Add comments for ccache related code in base.bbclass
    2) Remove all ccache-native's dependencies so that all recipes can depend on
       and use it.
  - Update test_ccache_tool in oeqa

* V1
  - Initial version

// Robert

The following changes since commit 8bc0d2f2197430723f8b2d0785169e48c883eedb:

  mdadm: Drop redundant patches and fix build with clang (2018-12-09 11:08:07 +0000)

are available in the git repository at:

  git://git.openembedded.org/openembedded-core-contrib rbt/ccache
  http://cgit.openembedded.org/openembedded-core-contrib/log/?h=rbt/ccache

Robert Yang (6):
  ccache-native: Remove dependencies
  ccache.bbclass: Refactor it to make it more reliable
  apr/openssl10: Enable ccache for them
  cmake.bbclass/goarch.bbclass: Set CCACHE_DISABLE
  base.bbclass: Add comments for gcc links to ccache
  oeqa/selftest/cases: Update test_ccache_tool

 meta/classes/base.bbclass                          |  4 ++++
 meta/classes/ccache.bbclass                        | 25 +++++++++++++++++++---
 meta/classes/cmake.bbclass                         |  4 ++--
 meta/classes/goarch.bbclass                        |  4 ++++
 meta/conf/bitbake.conf                             |  6 +-----
 meta/conf/layer.conf                               |  1 -
 meta/lib/oe/utils.py                               |  3 ++-
 meta/lib/oeqa/selftest/cases/buildoptions.py       | 10 ++++-----
 .../openssl/openssl10_1.0.2q.bb                    |  3 ---
 meta/recipes-devtools/ccache/ccache.inc            | 13 ++++++++++-
 meta/recipes-devtools/ccache/ccache_3.4.2.bb       |  4 ++--
 meta/recipes-support/apr/apr_1.6.5.bb              |  5 -----
 12 files changed, 54 insertions(+), 28 deletions(-)

-- 
2.7.4