Trying to compile some boost libraries in 64 bit on windows. I am using mingw-w64 package "x64-4.8.1-posix-seh-rev5." I am stuck on figuring out the following error when I compile boost thread. Section of output bellow. Any ideas? Thanks

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collect2.exe: error: ld returned 1 exit status

    "g++"   "-Wl,--out-implib,[...]bbuild_64\boost\bin.v2\libs\thread\build\gcc-mngw-4.8.1\dbg\thrd-mlt\libboost_thread-mt-d.dll.a" -o "[...]bbuild_64\boost\bin.v2\libs\thread\build\gcc-mngw-4.8.1\dbg\thrd-mlt\libboost_thread-mt-d.dll"  -shared -Wl,--start-group "[...]bbuild_64\boost\bin.v2\libs\thread\build\gcc-mngw-4.8.1\dbg\thrd-mlt\win32\thread.o" "[...]bbuild_64\boost\bin.v2\libs\thread\build\gcc-mngw-4.8.1\dbg\thrd-mlt\win32\tss_dll.o" "[...]bbuild_64\boost\bin.v2\libs\thread\build\gcc-mngw-4.8.1\dbg\thrd-mlt\win32\tss_pe.o" "[...]bbuild_64\boost\bin.v2\libs\thread\build\gcc-mngw-4.8.1\dbg\thrd-mlt\future.o" "[...]bbuild_64\boost\bin.v2\libs\chrono\build\gcc-mngw-4.8.1\dbg\thrd-mlt\libboost_chrono-mt-d.dll.a" "[...]bbuild_64\boost\bin.v2\libs\system\build\gcc-mngw-4.8.1\dbg\thrd-mlt\libboost_system-mt-d.dll.a"  -Wl,-Bstatic  -Wl,-Bdynamic  -Wl,--end-group -g -mthreads

...failed gcc.link.dll [...]bbuild_64\boost\bin.v2\libs\thread\build\gcc-mngw-4.8.1\dbg\thrd-mlt\libboost_thread-mt-d.dll.a [...]bbuild_64\boost\bin.v2\libs\thread\build\gcc-mngw-4.8.1\dbg\thrd-mlt\libboost_thread-mt-d.dll...
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