Compilation error on Ubuntu 16.04

[p-kraszewski]

Hi!
I'm totally unable to compile mSIGNA on Ubuntu 16.04. I'm said to belong to power user group ( :) ), yet I failed miserably.

1. ODB part fails miserably, due to ODB installed to /usr/lib/x86_64-linux-gnu instead of /usr/lib. Fixed, works.
2. Final link fails for absolutely mysterious reason of series of errors like:

sysroot/lib/libCoinDB.a(Vault.o):  In function
 `odb::sqlite::query_column<unsigned long, (odb::sqlite::database_type_id)0>::is_null() const [clone .isra.798]':
Vault.cpp:(.text+0x2472): undefined reference to 
`odb::sqlite::query_base::append(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'

There seems to be some serious f*ckup with C++ versions. ODB library in Ubuntu seems to be compiled with g++-4.9 while boost seems to be compiled with g++-5 (so we have ABI clash).

I'll keep the thread updated on progress. I think I can fix it via app-local odb compiled with g++5.

[p-kraszewski]

Ah, yes. Local ODB compiled with g++-5 to sysroot fixed error. I have working mSIGNA. Unfortunately I'm now on metered mobile link and pulling 60GB of blockchain is out of a question :(

Fix error 1: Add following at the end of deps/mk/sysroot.mk

ifneq ($(wildcard $(SYSROOT)/lib/x86_64-linux-gnu),)
    LIB_PATH += -L$(SYSROOT)/lib/x86_64-linux-gnu
endif

Fix error 2:

• Add libodb and libodb-sqlite sources to deps
• Configure both via ./configure --prefix=$(readlink -f ../../sysroot)
• Compile & install both

With those two, mSIGNA compiles successfully and seems to work (not yet tested with live bitcoind)