[OE-core] [PATCH] base.bbclass: Introduce PACKAGECONFIG_CONFARGS variable

[Martin Jansa]

* add separate variable for configuration options generated from
  PACKAGECONFIG setting, this helps other bbclasses and recipes
  to take advantage of PACKAGECONFIG mechanism, without including
  other options from EXTRA_OECONF
* e.g. meta-qt5 recipes are abusing EXTRA_OECONF to get options
  from PACKAGECONFIG:
  EXTRA_QMAKEVARS_PRE +=
  but with
  conf/distro/include/no-static-libs.inc
  it means getting --disable-static as invalid option inside
  EXTRA_QMAKEVARS_PRE as reported by Alexandre Belloni who tried
  to use poky with meta-qt5.
* once we migrate all bbclasses and recipes to PACKAGECONFIG_CONFARGS
  we should also restrict EXTRA_OECONF append only to autotools.bbclass
  like I did for cmake.bbclass

Signed-off-by: Martin Jansa <Martin.Jansa at gmail.com>
---
 meta/classes/base.bbclass  | 9 ++++++---
 meta/classes/cmake.bbclass | 2 ++
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index f9697a9..0259259 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -428,9 +428,12 @@ python () {
                     extraconf.append(items[1])
         appendVar('DEPENDS', extradeps)
         appendVar('RDEPENDS_${PN}', extrardeps)
-        if bb.data.inherits_class('cmake', d):
-            appendVar('EXTRA_OECMAKE', extraconf)
-        else:
+        appendVar('PACKAGECONFIG_CONFARGS', extraconf)
+
+        # TODO once are all recipes/bbclass abusign EXTRA_OECONF
+        # to get PACKAGECONFIG options fixed to use PACKAGECONFIG_CONFARGS
+        # move this append to autotools.bbclass
+        if not bb.data.inherits_class('cmake', d):
             appendVar('EXTRA_OECONF', extraconf)
 
     pn = d.getVar('PN', True)
diff --git a/meta/classes/cmake.bbclass b/meta/classes/cmake.bbclass
index 22cd61e..02f313a 100644
--- a/meta/classes/cmake.bbclass
+++ b/meta/classes/cmake.bbclass
@@ -27,6 +27,8 @@ OECMAKE_EXTRA_ROOT_PATH ?= ""
 OECMAKE_FIND_ROOT_PATH_MODE_PROGRAM = "ONLY"
 OECMAKE_FIND_ROOT_PATH_MODE_PROGRAM_class-native = "BOTH"
 
+EXTRA_OECMAKE_append = " ${PACKAGECONFIG_CONFARGS}"
+
 # CMake expects target architectures in the format of uname(2),
 # which do not always match TARGET_ARCH, so all the necessary
 # conversions should happen here.
-- 
2.8.1