[Buildroot] [PATCH 3/3] core/pkg-virtual: do not check they are neabled

[Yann E. MORIN]

Virtual packages do not have a Kconfig symbol, so we must not check that
they are enabled.

Fixes:
    http://autobuild.buildroot.org/results/287/28713478cc6edf8e5d5c3e830fee86a42f0afa8d/
    ... and numerous similar failures ...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
 package/pkg-generic.mk | 5 ++++-
 package/pkg-virtual.mk | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/package/pkg-generic.mk b/package/pkg-generic.mk
index 2daf337..08f9703 100644
--- a/package/pkg-generic.mk
+++ b/package/pkg-generic.mk
@@ -186,7 +186,10 @@ $(BUILD_DIR)/%/.stamp_configured:
 # building a package, even if not enabled in the configuration, we
 # want to accept it.
 ifeq ($(MAKECMDGOALS),)
-	@if test "$($(PKG)_TYPE)" = "target" -a -z "$($($(PKG)_KCONFIG_VAR))" ; then \
+	@if test "$($(PKG)_TYPE)" = "target" \
+		-a ! "$($(PKG)_IS_VIRTUAL)" = "YES" \
+		-a -z "$($($(PKG)_KCONFIG_VAR))" ; \
+	then \
 		echo "ERROR: $($(PKG)_NAME) is in the dependency chain of a package that has" ; \
 		echo "added it to its _DEPENDENCIES variable (directly or indirectly)" ; \
 		echo "without selecting it from Config.in." ; \
diff --git a/package/pkg-virtual.mk b/package/pkg-virtual.mk
index 9c68b51..244c1d0 100644
--- a/package/pkg-virtual.mk
+++ b/package/pkg-virtual.mk
@@ -41,6 +41,8 @@ $$(error No implementation selected for virtual package $(1). Configuration erro
 endif
 endif
 
+$(2)_IS_VIRTUAL = YES
+
 # A virtual package does not have any source associated
 $(2)_SOURCE =
 
-- 
1.9.1