Can any one help with my problem??

hi

noob xcode c++. trying use boost library. boost library installed macport. once loading done, create c++ project xcode. code below:
#include <iostream>
#include <boost/thread.hpp>

void task1() {
// stuff}

void task2() {
// stuff}

int main (int argc, const char * argv[])
{

using namespace boost;
thread thread_1 = thread(task1);
thread thread_2 = thread(task2);

// other stuff
thread_2.join();
thread_1.join();
return 0;
}

since boost library stored in /opt/local/include/boost, "header search path" set "/opt/local/include" , "library search paths" set to"/opt/local/bin." when main built, got error , couldn't figure out. error shown below.
ld: warning: directory not found option '-l/opt/ocal/bin'
undefined symbols architecture x86_64:
"boost::thread::~thread()", referenced from:
_main in main.o
"boost::thread::join()", referenced from:
_main in main.o
"boost::thread::start_thread()", referenced from:
boost::thread::thread<void (*)()>(void (*)(), boost::disable_if<boost::is_convertible<void (*&)(), boost::detail::thread_move_t<void (*)()> >, boost::thread::dummy*>::type) in main.o
"vtable boost::detail::thread_data_base", referenced from:
boost::detail::thread_data_base::thread_data_base() in main.o
note: missing vtable means first non-inline virtual member function has no definition.
"boost::detail::thread_data_base::~thread_data_base()", referenced from:
boost::detail::thread_data<void (*)()>::~thread_data() in main.o
"typeinfo boost::detail::thread_data_base", referenced from:
typeinfo boost::detail::thread_data<void (*)()> in main.o
ld: symbol(s) not found architecture x86_64
clang: error: linker command failed exit code 1 (use -v see invocation

can 1 suggest how fix?
, please suggest how set external library?

 

andys0723 said: ↑

...and "library search paths" set to"/opt/local/bin."

click expand...

no, wasn't.

read first linker warning carefully.

bonus points including relevant information in post. many posters don't that, leading wild goose chase.

 

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