protobuf-c: fix host build on GCC4

prereq-build.mk says that GCC 4.8 and above is supported. GCC 4.8
does not default to gnu++11. This fixes compilation.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

diff --git a/libs/protobuf-c/Makefile b/libs/protobuf-c/Makefile
index 0a54ea2a64582383482f3f9deb7cccb67a644543..42d48269dc0506f3370cb996f025bda71810c43c 100644 (file)
--- a/libs/protobuf-c/Makefile
+++ b/libs/protobuf-c/Makefile
@@ -48,6 +48,7 @@ endef
 
 CMAKE_HOST_OPTIONS += \
        -DBUILD_SHARED_LIBS=ON \
+       -DCMAKE_CXX_STANDARD=11 \
        -DCMAKE_SKIP_RPATH=OFF \
        -DCMAKE_INSTALL_RPATH="${STAGING_DIR_HOSTPKG}/lib"