[Buildroot] [PATCH v2,1/1] bdwgc: add optional cplusplus support

[Fabrice Fontaine]

Use CFLAGS_EXTRA to pass C and C++ flags in a single variable

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
Changes v1 -> v2 (after review of Arnout Vandecappelle and Baruch
Siach):
 - Use CFLAGS_EXTRA to pass C and C++ flags in a single variable instead
   of using CFLAGS and CPPFLAGS

 package/bdwgc/bdwgc.mk | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/package/bdwgc/bdwgc.mk b/package/bdwgc/bdwgc.mk
index 5603df8d9d..1d8d7284f8 100644
--- a/package/bdwgc/bdwgc.mk
+++ b/package/bdwgc/bdwgc.mk
@@ -27,9 +27,17 @@ ifeq ($(BR2_STATIC_LIBS),y)
 BDWGC_CFLAGS += -DGC_NO_DLOPEN
 endif
 
+BDWGC_CONF_OPTS = CFLAGS_EXTRA="$(BDWGC_CFLAGS)"
+
 # Ensure we use the system libatomic_ops, and not the internal one.
-BDWGC_CONF_OPTS = --with-libatomic-ops=yes CFLAGS="$(BDWGC_CFLAGS)"
+BDWGC_CONF_OPTS += --with-libatomic-ops=yes
 HOST_BDWGC_CONF_OPTS = --with-libatomic-ops=yes
 
+ifeq ($(BR2_INSTALL_LIBSTDCPP),y)
+BDWGC_CONF_OPTS += --enable-cplusplus
+else
+BDWGC_CONF_OPTS += --disable-cplusplus
+endif
+
 $(eval $(autotools-package))
 $(eval $(host-autotools-package))
-- 
2.17.1