[oe] [meta-oe] [PATCH] librcf: Add -latomic to LDFLAGS

[liu.ming50 at gmail.com]

From: Ming Liu <peter.x.liu at external.atlascopco.com>

This fixes following errors when compiling with clang:
| src/librcf.so.2.2.0: error: undefined reference to '__atomic_load_4'
| src/librcf.so.2.2.0: error: undefined reference to '__atomic_compare_exchange_4'
| /usr/include/boost/smart_ptr/detail/sp_counted_base_clang.hpp:36: error: undefined reference to '__atomic_fetch_sub_4'
| /usr/include/boost/smart_ptr/detail/sp_counted_base_clang.hpp:31: error: undefined reference to '__atomic_fetch_add_4'

Signed-off-by: Ming Liu <peter.x.liu at external.atlascopco.com>
---
 meta-oe/recipes-devtools/librcf/librcf_2.2.0.0.bb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta-oe/recipes-devtools/librcf/librcf_2.2.0.0.bb b/meta-oe/recipes-devtools/librcf/librcf_2.2.0.0.bb
index 43eff72..46b75c5 100644
--- a/meta-oe/recipes-devtools/librcf/librcf_2.2.0.0.bb
+++ b/meta-oe/recipes-devtools/librcf/librcf_2.2.0.0.bb
@@ -23,6 +23,8 @@ SRC_URI[sha256sum] = "bbfcc88de502c39604878c395f516b03fff4eac63eb4f7f44c07d43383
 
 S = "${WORKDIR}/RCF-${PV}"
 
+LDFLAGS += "-Wl,--as-needed -latomic -Wl,--no-as-needed"
+
 inherit cmake dos2unix
 
 PACKAGECONFIG ?= "zlib openssl sf-serialization boost-filesystem boost-asio protobuf json dll static shared demos"
-- 
2.7.4