Undefined symbols for architecture x86_64 in MAC OSX 10.11

[ironsniper]

hey everyone i am trying to compile a crypto coin wallet and am getting the following here and i cannot figureout how to fix it so it does not happen, i am using qt4 and qt creator to compile this

Undefined symbols for architecture x86_64:
"Db::verify(char const*, char const*, std::__1::basic_ostream<char, std::__1::char_traits<char> >, unsigned int)", referenced from:
CDBEnv::Verify(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, bool ()(CDBEnv&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >)) in db.o
CDBEnv::Salvage(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, bool, std::__1::vector<std::__1::pair<std::__1::vector<unsigned char, std::__1::allocator<unsigned char> >, std::__1::vector<unsigned char, std::__1::allocator<unsigned char> > >, std::__1::allocator<std::__1::pair<std::__1::vector<unsigned char, std::__1::allocator<unsigned char> >, std::__1::vector<unsigned char, std::__1::allocator<unsigned char> > > > >&) in db.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [thecreed-Qt.app/Contents/MacOS/thecreed-Qt] Error 1
22:47:07: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project thecreed-qt (kit: Desktop)
When executing step "Make"
22:47:07: Elapsed time: 00:09.

any help would be great

[koronabora]

Are there 'Db' class inside a library or inside your code?

[SGaist]

Hi and welcome to devnet,

Are you using C++11 ?