Hi all,
I've started just recently to use boost in my C++ application to manage
some threads. However, when I link my application I get strange
undefined references
g++ -g -O -o test_exe -lcppunit -ldl -lpthread -lboost_thread Main.o
test.o
test.o(.text+0x874): In function `threadTestCases::spawnThread()':
: undefined reference to `boost::thread::thread(boost::function0boost::function_base > const&)'
test.o(.text+0x8b7): In function `threadTestCases::spawnThread()':
: undefined reference to `boost::thread::join()'
test.o(.text+0x8ce): In function `threadTestCases::spawnThread()':
: undefined reference to `boost::thread::~thread()'
test.o(.text+0x8eb): In function `threadTestCases::spawnThread()':
: undefined reference to `boost::thread::~thread()'
collect2: ld returned 1 exit status
make: *** [test_exe] Error 1
As you can see I have linked in the boost_thread and pthread but still I
get the problem. My LD_LIBRARY_PATH is correctly setup to define the
path where boost is installed (/usr/lib/)
The code is as follows and is used in a CPPUNIT framework. The boost
code is in the spawnThread member function.
//---------------------------------------------------------------------
#include "test.h"
#include <ostream>
#include
#include
#include
using namespace std;
using namespace boost;
CPPUNIT_TEST_SUITE_REGISTRATION( threadTestCases );
void threadTestCases::setUp()
{
cout << "\nthreadTestCases::setUp\n" << endl ;
}
void threadTestCases::tearDown()
{
cout << "\nthreadTestCases::tearDown\n" << endl ;
}
void threadTestCases::testThread()
{
cout << "Thread [testThread] spawned\n" << endl;
try
{
CPPUNIT_ASSERT(1 == 2);
cout << "Thread end" << endl;
}
catch(...)
{
cout << "Exception caught in testThread, continue\n" << endl;
}
pthread_exit(0);
}
void *my_thread(void *)
{
cout << "Thread [my_thread] spawned\n" << endl ;
try
{
CPPUNIT_ASSERT(1 == 2);
}
catch(...)
{
cout << "Exception caught in my_thread, continue\n" << endl;
}
pthread_exit(0);
}
void threadTestCases::spawnThread()
{
pthread_t thread[2];
int ret;
cout << "\nSpawning new thread\n" << endl;
// Create thread via boost
boost::thread mfThread(boost::bind(&threadTestCases::testThread,
this));
// Start execution of thread
mfThread.join();
}
Is there anything I have done wrong in the code or perhaps in the build
environment which is using Boost library v1.32.0-1 for Linux RedHat with
g++ (GCC 3.4.6)
Any help would be appreciated as this has been bugging me for several
hours today.
Cheers
Carl
