[PATCH v2 1/2] [RFC] base.bbclass: extend PACKAGECONFIG to also allow RRECOMMENDS

["André Draszik" <git@andred.net>]

From: André Draszik <adraszik@tycoint.com>

It can be useful to add RRECOMMENDS to packages created, based
on certain PACKAGECONFIGs.

In particular where a package depends on certain linux kernel
infrastructure (kernel modules) which might or might not be
built as a module, being able to RRECOMMENDS instead of
RDEPENDS on the relevant packages avoids build failures in
case those modules are built statically into the kernel, i.e.
in case no package is being created for them.

Add another field to the PACKAGECONFIG syntax to achieve just
that.

Signed-off-by: André Draszik <adraszik@tycoint.com>
---
 meta/classes/base.bbclass | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index 78926656d7..3762c8addc 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -384,7 +384,7 @@ python () {
     # These take the form:
     #
     # PACKAGECONFIG ??= "<default options>"
-    # PACKAGECONFIG[foo] = "--enable-foo,--disable-foo,foo_depends,foo_runtime_depends"
+    # PACKAGECONFIG[foo] = "--enable-foo,--disable-foo,foo_depends,foo_runtime_depends,foo_runtime_recommends"
     pkgconfigflags = d.getVarFlags("PACKAGECONFIG") or {}
     if pkgconfigflags:
         pkgconfig = (d.getVar('PACKAGECONFIG') or "").split()
@@ -426,12 +426,13 @@ python () {
 
         extradeps = []
         extrardeps = []
+        extrarrecs = []
         extraconf = []
         for flag, flagval in sorted(pkgconfigflags.items()):
             items = flagval.split(",")
             num = len(items)
-            if num > 4:
-                bb.error("%s: PACKAGECONFIG[%s] Only enable,disable,depend,rdepend can be specified!"
+            if num > 5:
+                bb.error("%s: PACKAGECONFIG[%s] Only enable,disable,depend,rdepend,rrecommend can be specified!"
                     % (d.getVar('PN'), flag))
 
             if flag in pkgconfig:
@@ -439,12 +440,15 @@ python () {
                     extradeps.append(items[2])
                 if num >= 4 and items[3]:
                     extrardeps.append(items[3])
+                if num >= 5 and items[4]:
+                    extrarrecs.append(items[4])
                 if num >= 1 and items[0]:
                     extraconf.append(items[0])
             elif num >= 2 and items[1]:
                     extraconf.append(items[1])
         appendVar('DEPENDS', extradeps)
         appendVar('RDEPENDS_${PN}', extrardeps)
+        appendVar('RRECOMMENDS_${PN}', extrarrecs)
         appendVar('PACKAGECONFIG_CONFARGS', extraconf)
 
     pn = d.getVar('PN')
-- 
2.11.0