I'm trying to use pthreads and am getting undefined references. Here's the command line

Code:
C:/Bin/Mingw/bin/../libexec/gcc/mingw32/3.4.2/collect2.exe -Bdynamic -o Stktest.exe 
    C:/Bin/Mingw/bin/../lib/gcc/mingw32/3.4.2/../../../crt2.o 
    C:/Bin/Mingw/bin/../lib/gcc/mingw32/3.4.2/crtbegin.o 

    -LC:\Bin\Stk\bin -LC:\Bin\Mingw\Lib -LC:\Bin\Pthreads\lib 
    -LC:/Bin/Mingw/bin/../lib/gcc/mingw32/3.4.2 
    -LC:/Bin/Mingw/bin/../lib/gcc 
    -LC:/Bin/Mingw/bin/../lib/gcc/mingw32/3.4.2/../../../../mingw32/lib 
    -LC:/Bin/Mingw/bin/../lib/gcc/mingw32/3.4.2/../../.. 

    Debug\stdafx.o Debug\Stktest.o 
    -lpthreadGC2 -lstk -lstdc++ -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt 
    -luser32 -lkernel32 -ladvapi32 -lshell32 -lmingw32 -lgcc -lmoldname -lmingwex  -lmsvcrt 

    C:/Bin/Mingw/bin/../lib/gcc/mingw32/3.4.2/crtend.o

C:\Bin\Stk\bin/libstk.a(RtAudio.o): In function `ZN5RtApiD0Ev':C:/Bin/Stk/src/RtAudio.cpp:263: undefined reference to `_imp__pthread_mutex_destroy'
C:\Bin\Stk\bin/libstk.a(RtAudio.o): In function `ZN5RtApiD1Ev':C:/Bin/Stk/src/RtAudio.cpp:263: undefined reference to `_imp__pthread_mutex_destroy'
C:\Bin\Stk\bin/libstk.a(RtAudio.o): In function `ZN5RtApiD2Ev':C:/Bin/Stk/src/RtAudio.cpp:263: undefined reference to `_imp__pthread_mutex_destroy'
C:\Bin\Stk\bin/libstk.a(RtAudio.o): In function `ZN5RtApiC1Ev':C:/Bin/Stk/src/RtAudio.cpp:258: undefined reference to `_imp__pthread_mutex_init'
C:\Bin\Stk\bin/libstk.a(RtAudio.o): In function `ZN5RtApiC2Ev':C:/Bin/Stk/src/RtAudio.cpp:258: undefined reference to `_imp__pthread_mutex_init'
Here's the dumpbin of the pthreads library I'm linking against

Code:
C:\Bin\Pthreads\lib>dumpbin libpthreadGC2.a /exports
Microsoft (R) COFF/PE Dumper Version 8.00.50727.762
Copyright (C) Microsoft Corporation.  All rights reserved.


Dump of file libpthreadGC2.a

File Type: LIBRARY

     Exports

       ordinal    name

                  _sem_wait
                  _sem_unlink
                  _sem_trywait
                  _sem_timedwait
                  _sem_post_multiple
                  ...
                  _pthread_mutexattr_destroy
                  _pthread_mutex_unlock
                  _pthread_mutex_trylock
                  _pthread_mutex_timedlock
                  _pthread_mutex_lock
                  _pthread_mutex_init
                  _pthread_mutex_destroy
                  ...

  Summary

           0 .bss
           0 .data
          14 .idata$2
         1D4 .idata$4
         1D4 .idata$5
         B10 .idata$6
         1DC .idata$7
         398 .text

C:\Bin\Pthreads\lib>
A similar thread I found was here: http://sourceware.org/ml/pthreads-wi.../msg00056.html
Answer here: http://sourceware.org/ml/pthreads-wi.../msg00058.html

But the case of link order doesn't seem to be the issue, but my dumpbin doesn't contain these '_imp_xxx' references, so I'm not exactly sure what to do