errors when running build

[austinfrey]

i hope this is the right repo for this. i'm having some issue when attempting to build with hyper-build.

$ node -v
v12.7.0

$ clang++ --version
clang version 8.0.0-3 (tags/RELEASE_800/final)

$ git --version
git version 2.20.1

$ lsb_release -irc
Distributor ID:	Ubuntu
Release:	19.04
Codename:	disco

steps to reproduce

example 1

git clone https://github.com/datcxx/hypercore.git
cd hypercore
build install
build

output

/datcxx/hypercore/index.cxx:2:10: fatal error: 'deps/datcxx/flat-tree/index.hxx' file not found
#include "deps/datcxx/flat-tree/index.hxx"
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.

example 2

git clone https://github.com/datcxx/path
cd path
build install
build

output

In file included from /datcxx/path/index.cxx:1:
/datcxx/path/index.hxx:4:10: fatal error: 'algorithm' file not found
#include <algorithm>
         ^~~~~~~~~~~
1 error generated.