cd growthcoin/src && make -f makefile.unix
Result
remote: Counting objects: 1338, done.
remote: Compressing objects: 100% (645/645), done.
remote: Total 1338 (delta 746), reused 1239 (delta 682)
Receiving objects: 100% (1338/1338), 56.42 MiB | 3.45 MiB/s, done.
Resolving deltas: 100% (746/746), done.
Checking connectivity... done.
Checking out files: 100% (433/433), done.
ubuntu@ip-172-31-9-61:~/growthcoin$ cd src/
ubuntu@ip-172-31-9-61:~/growthcoin/src$ make -f makefile.unix
g++ -c -O2 -msse2 -pthread -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter -g -DBOOST_SPIRIT_THREADSAFE -I/home/ubuntu/growthcoin/src -I/home/ubuntu/growthcoin/src/obj -DUSE_UPNP=0 -DUSE_IPV6=1 -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
/bin/sh ../share/genbuild.sh obj/build.h
g++ -c -O2 -msse2 -pthread -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter -g -DBOOST_SPIRIT_THREADSAFE -I/home/ubuntu/growthcoin/src -I/home/ubuntu/growthcoin/src/obj -DUSE_UPNP=0 -DUSE_IPV6=1 -DHAVE_BUILD_INFO -fno-stack-protector -fstack-protector-all -Wstack-protector -D_FORTIFY_SOURCE=2 -MMD -MF obj/version.d -o obj/version.o version.cpp
g++ -c -O2 -msse2 -pthread -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter -g -DBOOST_SPIRIT_THREADSAFE -I/home/ubuntu/growthcoin/src -I/home/ubuntu/growthcoin/src/obj -DUSE_UPNP=0 -DUSE_IPV6=1 -DHAVE_BUILD_INFO -fno-stack-protector -fstack-protector-all -Wstack-protector -D_FORTIFY_SOURCE=2 -MMD -MF obj/checkpoints.d -o obj/checkpoints.o checkpoints.cpp
In file included from checkpoints.cpp:10:0:
db.h:14:20: fatal error: db_cxx.h: No such file or directory
#include
^
compilation terminated.
make: *** [obj/checkpoints.o] Error 1
David I think you are missing libdb5.1++-dev (just a guess)
Check this post out for a hint on ubuntu builds https://cryptocointalk.com/topic/3003-hbn-version-13/page-3#entry32590