Hi there, Surely if that was the case I would have received a compilation error. As it is my code compiles without any errors/warnings which makes me think it's a linker error or something else. Additionally the headers for boost are in /usr/include/boost so I don't believe I need to specify this include directive in my makefile The linking error is baffling me as everything checks out ok... Cheers Carl |-----Original Message----- |From: boost-users-bounces@lists.boost.org |[mailto:boost-users-bounces@lists.boost.org] On Behalf Of Xu, Peng |Sent: 08 May 2007 18:01 |To: boost-users@lists.boost.org |Subject: Re: [Boost-users] Undefined reference | |You need to specify where boost headers are located, |-I/path-to-boost-headers. | |-----Original Message----- |From: boost-users-bounces@lists.boost.org |[mailto:boost-users-bounces@lists.boost.org] On Behalf Of Carl |Wainwright |Sent: Tuesday, May 08, 2007 11:56 AM |To: boost-users@lists.boost.org |Subject: [Boost-users] Undefined reference | |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 |_______________________________________________ |Boost-users mailing list |Boost-users@lists.boost.org |http://lists.boost.org/mailman/listinfo.cgi/boost-users |_______________________________________________ |Boost-users mailing list |Boost-users@lists.boost.org |http://lists.boost.org/mailman/listinfo.cgi/boost-users |