Hi everyone. I want to show my extreme newbieness. I can't compile the BASIC thread examples. I get lots of link errors http://www-eleves-isia.cma.fr/documentation/BoostDoc/boost_1_29_0/libs/threa... I'm running Windows XP SP2 with mingw (which compiles everything else in my project fine g++ -IC:/Boost/include/boost-1_32 -LC:/Boost/lib -lboost_thread-mgw-mt thread_test.cpp It definitely finds the library (when i miss type it it throws a different error) C:/DOKUME~1/Marty/LOKALE~1/Temp/cc8Yaaaa.o(.text+0x1ce): In function `main': c:/webcam/thread_test.cpp:27: undefined reference to `_imp___ZN5boost6threadC1ERKNS_9function0IvSaINS_13function_baseEEEE' C:/DOKUME~1/Marty/LOKALE~1/Temp/cc8Yaaaa.o(.text+0x235):c:/webcam/thread_test.cpp:28: undefined reference to `_imp___ZN5boost6thread4joinEv' C:/DOKUME~1/Marty/LOKALE~1/Temp/cc8Yaaaa.o(.text+0x26b):c:/webcam/thread_test.cpp:28: undefined reference to `_imp___ZN5boost6threadD1Ev' C:/DOKUME~1/Marty/LOKALE~1/Temp/cc8Yaaaa.o(.text+0x2a0):c:/webcam/thread_test.cpp:28: undefined reference to `_imp___ZN5boost6threadD1Ev' C:/DOKUME~1/Marty/LOKALE~1/Temp/cc8Yaaaa.o(.text$_ZN12thread_alarmclEv[thread_alarm::operator()()]+0x15): In function `ZN9__gnu_cxx13new_allocatorI12thread_alarmE7destroyEPS1_': c:/msys/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/ext/new_allocator.h: undefined reference to `_imp___ZN5boost9xtime_getEPNS_5xtimeEi' C:/DOKUME~1/Marty/LOKALE~1/Temp/cc8Yaaaa.o(.text$_ZN12thread_alarmclEv[thread_alarm::operator()()]+0x36):c:/msys/MinGW/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/ext/new_allocator.h: undefined reference to `_imp___ZN5boost6thread5sleepERKNS_5xtimeE' collect2: ld returned 1 exit status But when I run it as 2 commands: g++ -IC:/Boost/include/boost-1_32 thread_test.cpp -o thread_test.o -c g++ -LC:/Boost/lib -o manual_test thread_test.o -lboost_thread-mgw-mt It compiles perfectly, no warnings or anything $ manual_test.exe setting alarm for 5 seconds... alarm sounded... is there some rule, for producing executables from librarys, that the linking stage must be seperate???? Thanks Martin Send instant messages to your online friends http://au.messenger.yahoo.com
On Sat, 2005-08-27 at 23:13, Martin Cavanagh wrote:
g++ -IC:/Boost/include/boost-1_32 -LC:/Boost/lib -lboost_thread-mgw-mt thread_test.cpp
In this case you list the library _before_ your own code.
But when I run it as 2 commands: g++ -IC:/Boost/include/boost-1_32 thread_test.cpp -o thread_test.o -c g++ -LC:/Boost/lib -o manual_test thread_test.o -lboost_thread-mgw-mt
It compiles perfectly, no warnings or anything
But here you list the library _after_ your own code.
is there some rule, for producing executables from librarys, that the linking stage must be seperate????
No. You can compile and link in a single step, provided you list the library after your own code. (You'll also want "-o manual_test" probably.) -- Stephen Jackson
I have a question.
if I have two library libms1.a and libms1d, they have the some symbols.
what's will happen if I link with `-ls1 -ls1d'?
thanks in advanced.
On 8/30/05, Stephen Jackson
On Sat, 2005-08-27 at 23:13, Martin Cavanagh wrote:
g++ -IC:/Boost/include/boost-1_32 -LC:/Boost/lib -lboost_thread-mgw-mt thread_test.cpp
In this case you list the library _before_ your own code.
But when I run it as 2 commands: g++ -IC:/Boost/include/boost-1_32 thread_test.cpp -o thread_test.o -c g++ -LC:/Boost/lib -o manual_test thread_test.o -lboost_thread-mgw-mt
It compiles perfectly, no warnings or anything
But here you list the library _after_ your own code.
is there some rule, for producing executables from librarys, that the linking stage must be seperate????
No. You can compile and link in a single step, provided you list the library after your own code. (You'll also want "-o manual_test" probably.)
-- Stephen Jackson
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participants (3)
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Cheney Stallman -
Martin Cavanagh -
Stephen Jackson