+printf "Checking for -lnfnetlink... "
+printf "#include <stdint.h>\n#include <netinet/in.h>\n#include <linux/netfilter.h>\nint main() { return 0; }\n" > build_check.c
+$CC $CFLAGS $LDFLAGS build_check.c -lnfnetlink -o fake > /dev/null 2> /dev/null
+if [ $? != 0 ]
+then
+ CHECK_NFNETLINK=no
+ printf "no\n"
+else
+ CHECK_NFNETLINK=yes
+ NETLINK_LDFLAGS="-lnfnetlink"
+ printf "yes\n"
+fi
+rm -f fake
+
+printf "Checking for -lnetfilter_queue... "
+printf "#include <stdint.h>\n#include <libnetfilter_queue/libnetfilter_queue.h>\nint main() { return 0; }\n" > build_check.c
+$CC $CFLAGS $LDFLAGS build_check.c -lnetfilter_queue -o fake > /dev/null 2> /dev/null
+if [ $? != 0 ]
+then
+ CHECK_NFQ=no
+ printf "no\n"
+else
+ CHECK_NFQ=yes
+ NFQ_LDFLAGS="-lnetfilter_queue"
+ printf "yes\n"
+fi
+rm -f fake
+
+printf "Checking for -lyajl... "
+pkg-config --version > /dev/null 2> /dev/null
+if [ "$?" = "0" ]
+then
+ pkg-config --atleast-version=2.0.0 yajl
+ if [ "$?" != "0" ]
+ then
+ CHECK_YAJL=no
+ printf "no\n"
+ else
+ CHECK_YAJL=yes
+ printf `pkg-config --modversion yajl`"\n"
+ fi
+else
+ printf "#include <stdio.h>\n" > build_check.c
+ printf "#include <yajl/yajl_version.h>\n" >> build_check.c
+ printf "int main() { printf(\"%%d\", yajl_version()); return 0; }\n" >> build_check.c
+ $CC $CFLAGS $LDFLAGS build_check.c -lyajl -o fake > /dev/null 2> /dev/null
+ if [ $? != 0 ]
+ then
+ CHECK_YAJL=no
+ printf "no\n"
+ else
+ YAJL_VERSION=`./fake`
+ if [ $YAJL_VERSION -ge 20000 ]
+ then
+ CHECK_YAJL=yes
+ printf "${YAJL_VERSION}\n"
+ else
+ CHECK_YAJL=no
+ printf "no. Need at least version 2.0.0, existing version is ${YAJL_VERSION}\n"
+ fi
+ fi
+ rm -f fake
+fi
+
+printf "Checking for boost::scoped_ptr... "
+printf "#include <boost/scoped_ptr.hpp>\nint main() { boost::scoped_ptr<int> test(new int(1)); return 0; }\n" > build_check.cpp
+$CXX $CXXFLAGS $LDFLAGS build_check.cpp -o fake # > /dev/null 2> /dev/null
+if [ $? != 0 ]
+then
+ CHECK_BOOST_SCOPED_PTR=no
+ printf "no\n"
+else
+ CHECK_BOOST_SCOPED_PTR=yes
+ printf "yes\n"
+fi
+rm -f fake
+