And more fixes to Makefile and cxx11flags.sh...

CollectAgent/Makefile

 include ../config.mk
 
-CXXFLAGS =	$(shell ./cxx11flags.sh $(CXX) -O0 -g -Wall -Wno-null-conversion -fmessage-length=0 -I$(DCDBDEPLOYPATH)/include/)
+CXXFLAGS =	$(shell ./cxx11flags.sh $(CXX) -O0 -g -Wall -Wno-null-conversion -fmessage-length=0 -I$(DCDBDEPLOYPATH)/include/ | head -1)
 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
+LIBS =		$(shell ./cxx11flags.sh $(CXX) -L$(DCDBDEPLOYPATH)/lib/ -lthrift -lmosquitto -lssl -lcrypto -lpthread -lboost_system | tail -1)
 TARGET =	collectagent
 
 SUBTARGETS = cassandra/Cassandra.h

CollectAgent/cxx11flags.sh

 #!/bin/bash
 
-function test_flags {
+CFLAGSOK=0
+LFLAGSOK=0
+
+function test_cflags {
 CXX=$1
 shift 1
 FLAGS+=$*
 
-cat << EOF | $CXX $FLAGS -x c++ - -o /dev/null &>/dev/null
+cat << EOF | $CXX $FLAGS -c -x c++ - -o $TMPFILE1 &>/dev/null
 #include <system_error>
 int main() {
     std::system_error e(0, std::system_category(), "");
     return 0;
 }
 EOF
-    
+}
+
+function test_lflags {
+CXX=$1
+shift 1
+FLAGS+=$*
+
+$CXX $FLAGS -o $TMPFILE2 $TMPFILE1 &>/dev/null
 }
 
 if [ "$#" -lt "1" ]; then
@@ -21,23 +31,59 @@ if [ "$#" -lt "1" ]; then
     exit 0
 fi 
 
+# Create a temporary file for the C++ compiler output.
+tempdir=`basename $0`
+TMPFILE1=`mktemp -t ${tempdir}` || exit 1
+TMPFILE2=`mktemp -t ${tempdir}` || exit 1
+
 # Test c++ 11 flags for g++...
+if [ "$CFLAGSOK" -eq "0" ]; then
 FLAGS="--std=c++11 "
-test_flags $@
+test_cflags $@
 if [ "$?" -eq "0" ]; then
     echo $FLAGS
-    exit 0
+    CFLAGSOK=1
+    goto 
+fi
 fi
 
 # Test c++ 11 flags for llvm clang
-FLAGS="-std=c++11 -stdlib=libc++ -lc++ "
-test_flags $@
+if [ "$CFLAGSOK" -eq "0" ]; then
+FLAGS="-std=c++11 -stdlib=libc++ "
+test_cflags $@
 if [ "$?" -eq "0" ]; then
     echo $FLAGS
-    exit 0
+    CFLAGSOK=1
+fi
 fi
 
 # No idea how to get c++11 code compiled on this machine -> return error!
-exit 1
+if [ "$CFLAGSOK" -eq "0" ]; then
+    exit 1
+fi
+
+# Test c++ 11 linker flags for g++ (nothing required)
+if [ "$LFLAGSOK" -eq "0" ]; then
+FLAGS=" "
+test_lflags $@
+if [ "$?" -eq "0" ]; then
+    echo $FLAGS
+    LFLAGSOK=1
+fi
+fi
 
+# Test c++ 11 linker flags for llvm clang
+if [ "$LFLAGSOK" -eq "0" ]; then
+FLAGS="-lc++ "
+test_lflags $@
+if [ "$?" -eq "0" ]; then
+    echo $FLAGS
+    LFLAGSOK=1
+fi
+fi
+
+# No idea how to get c++11 code linked on this machine -> return error!
+if [ "$LFLAGSOK" -eq "0" ]; then
+    exit 1
+fi