when hitting make -f makefile.unix i get following error why is this?


xx@xx:~/sling/src# make -f makefile.unix
g++ -c -O2  -pthread -Wall -Wextra -Wno-ignored-qualifiers -Wformat -Wformat-security -Wno-unused-parameter -g -DBOOST_SPIRIT_THREADSAFE -DUSE_SECP256K1 -I/root/sling/src -I/root/sling/src/obj -DUSE_UPNP=0 -DENABLE_WALLET -I/root/sling/src/leveldb/include -I/root/sling/src/leveldb/helpers -DHAVE_BUILD_INFO -fno-stack-protector -fstack-protector-all -Wstack-protector -D_FORTIFY_SOURCE=2  -MMD -MF obj/alert.d -o obj/alert.o alert.cpp
In file included from alert.h:9:0,
                 from alert.cpp:5:
serialize.h:19:48: fatal error: boost/type_traits/is_fundamental.hpp: No such file or directory
 #include
                                                ^
compilation terminated.
makefile.unix:201: recipe for target 'obj/alert.o' failed
make: *** [obj/alert.o] Error 1