Further fixes to Makefile and cxx11flags.sh.

CollectAgent/Makefile

 include ../config.mk
 
-CXXFLAGS =	-O0 -g -Wall -Wno-null-conversion -std=c++11 -stdlib=libc++ -fmessage-length=0 -I$(DCDBDEPLOYPATH)/include/
+CXXFLAGS =	$(shell ./cxx11flags.sh $(CXX) -O0 -g -Wall -Wno-null-conversion -fmessage-length=0 -I$(DCDBDEPLOYPATH)/include/)
 OBJS =		collectagent.o simplemqttserver.o simplemqttserverthread.o cassandra/Cassandra.o cassandra/cassandra_constants.o cassandra/cassandra_types.o
 SRC = 		$(patsubst cassandra/%,,$(OBJS:.o=.cpp))
-LIBS =		-L$(DCDBDEPLOYPATH)/lib/ -lthrift -lmosquitto -lssl -lcrypto -lpthread -lboost_system -lc++
+LIBS =		-L$(DCDBDEPLOYPATH)/lib/ -lthrift -lmosquitto -lssl -lcrypto -lpthread -lboost_system
 TARGET =	collectagent
 
 SUBTARGETS = cassandra/Cassandra.h

CollectAgent/cxx11flags.sh

@@ -5,14 +5,18 @@ CXX=$1
 shift 1
 FLAGS+=$*
 
-cat << EOF | $CXX -c $FLAGS -x c++ - -o /dev/null &>/dev/null
+cat << EOF | $CXX $FLAGS -x c++ - -o /dev/null &>/dev/null
 #include <system_error>
-int main() {return 0;}
+int main() {
+    std::system_error e(0, std::system_category(), "");
+    return 0;
+}
 EOF
     
 }
 
 if [ "$#" -lt "1" ]; then
+    echo "C++11 Compiler Flags Checker"
     echo "Usage: $0 <C++_compiler_name> [additional compiler flags]"
     exit 0
 fi 
@@ -26,7 +30,7 @@ if [ "$?" -eq "0" ]; then
 fi
 
 # Test c++ 11 flags for llvm clang
-FLAGS="-std=c++11 -stdlib=libc++ "
+FLAGS="-std=c++11 -stdlib=libc++ -lc++ "
 test_flags $@
 if [ "$?" -eq "0" ]; then
     echo $FLAGS