date_time problems

From: Eric Crampton (ericcrampton_at_[hidden])
Date: 2003-02-25 08:15:10

I'm trying to test the date_time functionality of boost and am having some 
difficulties. I would like to simply get the current local time into a ptime 
and write it out as an ISO-8601 string.

Using Boost 1.29 and g++ 3.2, when I compile the following code I get a 
number of *linker* errors.

Code:

#include <boost/date_time/posix_time/posix_time_types.hpp>
#include <boost/date_time/posix_time/time_formatters.hpp>

int main()
{
boost::posix_time::ptime pt = boost::posix_time::second_clock::local_time();
std::cout << boost::posix_time::to_iso_extended_string(pt) << std::endl;
}

That code seems pretty straightforward to me. The linker errors look like 
the following:

test.cpp:7: undefined reference to 
`boost::date_time::gregorian_calendar_base<boost::date_time::year_month_day_base<boost::gregorian::greg_year, 
boost::gregorian::greg_month, boost::gregorian::greg_day>, unsigned 
long>::day_number(boost::date_time::year_month_day_base<boost::gregorian::greg_year, 
boost::gregorian::greg_month, boost::gregorian::greg_day> const&)'

test.cpp:6: undefined reference to 
`boost::date_time::gregorian_calendar_base<boost::date_time::year_month_day_base<boost::gregorian::greg_year, 
boost::gregorian::greg_month, boost::gregorian::greg_day>, unsigned 
long>::from_day_number(unsigned long)'

(snipped...)

Best as I can tell (cd $BOOST_ROOT/boost/date_time && find . -name '*.cpp' 
-print), there are no .cpp files to be compiled...

Anyone know what's up?
--Eric

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