Compilation error error C2039: 'clock_t' : is not a member of '`global namespace''

Question

I'm compiling in VS 2010 with boost 1_53. I'm also using boost's threads.

during compilation i'm getting bunch of errors like this

c:\\program files (x86)\\microsoft visual studio 10.0\\vc\\include\\ctime(18): error C2039: 'clock_t' : is not a member of '`global namespace''

all errors are about ctime and c_time.hpp .

i've searched around for the solution but without success.

can anyone, please, help?

here some part of code.

#define BOOST_THREAD_USE_DLL 

#include <boost/optional.hpp>
#include <boost/thread.hpp>
#include <boost/thread/thread.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>

Answer 1

Something, somewhere in your codebase is including a different "time.h". I just discovered this migrating code from Linux to Windows - Because windows is case insensitive, a local "Time.h" (note the capital) was included as "time.h", causing the error that you see.

According to someone's post , FFMPEG can cause this problem via this precise mechanism.

Please look through your codebase and/or libraries for a "time.h" to see if this is happening. Otherwise, an alternate option is to output the fully pre-processed source to see what is actually being compiled in the offending file.