I have read the *getting started* section and its confused me even more. 2009/8/21 Steven Watanabe

AMDG

Shaolin wrote:

...

I am try to create a thread with boost but eveytime I execute I get some freaky error messages. See code below followed by error msg:

#include #include <iostream> using namespace std;

void hello() { cout << "hello" << endl; }

int main(int argc, char* argv[]) { boost::thread thrd1(&hello); // ERROR caused by the &hello param thrd1.join();

}

You need to link to the thread library. Please read the getting started guide.

In Christ, Steven Watanabe

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Ok, I have managed to compile and install the libs but I dont know how to include it in the commandline. The regex example works fine but how do I do it for thread ? $ c++ -I *path/to/*boost_1_39_0 example.cpp -o example *\* *~/boost/stage/lib/libboost_regex-gcc34-mt-d-1_36.a* 2009/8/21 James C. Sutherland

On Aug 20, 2009, at 6:47 PM, Shaolin wrote:

I have read the *getting started* section and its confused me even more.

Read it again ;-)

boost::thread is a compiled library that you must link against. Be sure that you have compiled and installed the library, and that you are including the appropriate link command.

2009/8/21 Steven Watanabe

...

AMDG

Shaolin wrote:

...

I am try to create a thread with boost but eveytime I execute I get some freaky error messages. See code below followed by error msg:

#include #include <iostream> using namespace std;

void hello() { cout << "hello" << endl; }

int main(int argc, char* argv[]) { boost::thread thrd1(&hello); // ERROR caused by the &hello param thrd1.join();

}

You need to link to the thread library. Please read the getting started guide.

In Christ, Steven Watanabe

_______________________________________________ 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

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Thanks, it looks like I didnt install it properly .. below is the error message I get: *g++: ~/boost/stage/lib/libboost_thread-gcc34-mt-d-1_36.a: No such file or directory* This is what I did the install the lib. $ cd /usr/local/boost_1_39_0 $ sudo ./bootstrap.sh $ sudo ./bjam install 2009/8/21 Rush Manbert

On Aug 21, 2009, at 9:03 AM, Shaolin wrote:

Ok, I have managed to compile and install the libs but I dont know how to include it in the commandline. The regex example works fine but how do I do it for thread ?

$ c++ -I *path/to/*boost_1_39_0 example.cpp -o example *\*

*~/boost/stage/lib/libboost_regex-gcc34-mt-d-1_36.a*

The library naming all follows a pattern, so:

~/boost/stage/lib/libboost_thread-gcc34-mt-d-1_36.a * * *which should work if you actually built the library. *

- Rush

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

AMDG Shaolin wrote:

Thanks, it looks like I didnt install it properly .. below is the error message I get:

*g++: ~/boost/stage/lib/libboost_thread-gcc34-mt-d-1_36.a: No such file or directory*

This is what I did the install the lib. $ cd /usr/local/boost_1_39_0 $ sudo ./bootstrap.sh $ sudo ./bjam install

bjam install places the libraries under /usr/lib bjam stage or just bjam puts the libraries in stage/lib. In Christ, Steven Watanabe

AMDG Shaolin wrote:

Ok, I have reconfigured it and the file is now located in the boost_1_39_0 directory. However, it still doesnt work. This is what I type in command line:

g++ -I /usr/local/boost_1_39_0 test.cc -o example \ ~/stage/lib/libboost_thread-gcc43-mt-1_39.a

Does ~/stage/lib/libboost_thread-gcc43-mt-1_39.a exist? From what you say below I doubt it, so of course it doesn't work.

*stage directory*: /usr/local/boost_1_39_0/stage/lib/libboost_thread-gcc43-mt-1_39.a

Assuming that this is the actual location of the library, use -L/usr/local/boost_1_39_0/stage/lib -lboost_thread-gcc43-mt-1_39 In Christ, Steven Watanabe

Shaolin wrote:

Ok, the lib issues have been fixed. I have configured it all properly and I am not longer getting the 'dir not found errors'. I am alas getting a new error.

// This is what I enter in commandline $ g++ -I /usr/local/boost_1_39_0 filereader.cc -o fr -L~/usr/local/boost_1_39_0/boost/stage/lib/libboost_thread-gcc43-mt-1_39.a

// ERROR MSG: /tmp/ccv0fHxn.o: In function `main': filereader.cc:(.text+0x3f0): undefined reference to `boost::thread::~thread()' /tmp/ccv0fHxn.o: In function `boost::mutex::mutex()': filereader.cc:(.text._ZN5boost5mutexC1Ev[boost::mutex::mutex()]+0x45): undefined reference to `boost::thread_resource_error::thread_resource_error()' filereader.cc:(.text._ZN5boost5mutexC1Ev[boost::mutex::mutex()]+0x4d): undefined reference to `boost::thread_resource_error::~thread_resource_error()' filereader.cc:(.text._ZN5boost5mutexC1Ev[boost::mutex::mutex()]+0x55): undefined reference to `typeinfo for boost::thread_resource_error' /tmp/ccv0fHxn.o: In function `boost::detail::thread_data::~thread_data()': filereader.cc:(.text._ZN5boost6detail11thread_dataIPFvvEED0Ev[boost::detail::thread_data::~thread_data()]+0x16): undefined reference to `boost::detail::thread_data_base::~thread_data_base()' /tmp/ccv0fHxn.o: In function `boost::detail::thread_data::~thread_data()': filereader.cc:(.text._ZN5boost6detail11thread_dataIPFvvEED1Ev[boost::detail::thread_data::~thread_data()]+0x16): undefined reference to `boost::detail::thread_data_base::~thread_data_base()' /tmp/ccv0fHxn.o: In function `boost::condition_variable::condition_variable()': filereader.cc:(.text._ZN5boost18condition_variableC1Ev[boost::condition_variable::condition_variable()]+0x3a): undefined reference to `boost::thread_resource_error::thread_resource_error()' filereader.cc:(.text._ZN5boost18condition_variableC1Ev[boost::condition_variable::condition_variable()]+0x42): undefined reference to `boost::thread_resource_error::~thread_resource_error()' filereader.cc:(.text._ZN5boost18condition_variableC1Ev[boost::condition_variable::condition_variable()]+0x4a): undefined reference to `typeinfo for boost::thread_resource_error' /tmp/ccv0fHxn.o: In function `boost::detail::thread_data_base::thread_data_base()': filereader.cc:(.text._ZN5boost6detail16thread_data_baseC2Ev[boost::detail::thread_data_base::thread_data_base()]+0x1b): undefined reference to `vtable for boost::detail::thread_data_base' /tmp/ccv0fHxn.o: In function `boost::thread::thread(void (*)(), boost::disable_if >, boost::thread::dummy*>::type)': filereader.cc:(.text._ZN5boost6threadC1IPFvvEEET_NS_10disable_ifINS_14is_convertibleIRS4_NS_6detail13thread_move_tIS4_EEEEPNS0_5dummyEE4typeE[boost::thread::thread(void (*)(), boost::disable_if >, boost::thread::dummy*>::type)]+0x32): undefined reference to `boost::thread::start_thread()' /tmp/ccv0fHxn.o:(.rodata._ZTIN5boost6detail11thread_dataIPFvvEEE[typeinfo for boost::detail::thread_data]+0x8): undefined reference to `typeinfo for boost::detail::thread_data_base' collect2: ld returned 1 exit status

You are still not using your tools correctly. -L is for specifying a directory location. The errors you are getting are because you are not linking the thread library. Let me suggest that you take some time with a simple non-boost example and learn how the compiler and linker work. The problems you are having are simply because you do not understand your tools. I am sure there must be some good tutorials on basic compiling/linking somewhere on the web. Good luck Michael -- ---------------------------------- Michael Caisse Object Modeling Designs www.objectmodelingdesigns.com