I have some troubles with mingw32 (compiling from cygwin with g++ 3.4.4): The code below fails at link with following error message: /usr/lib/gcc/i686-pc-mingw32/3.4.4/../../../../i686-pc-mingw32/lib/libmingw32.a(tlssup.o):tlssup.c:(.tls+0x0): multiple definition of `__tls_used' /cygdrive/d/Softs/1.7/mgw-release/boost/lib/libboost_thread_win32.a(tss_pe.o):tss_pe.cpp:(.rdata$T+0x0): first defined here collect2: ld returned 1 exit status #include <boost/thread/tss.hpp> int main() { boost::thread_specific_ptr<int> tsp; return 0; } Compiling command was: $ g++-3 -o toto -O3 -DNDEBUG -mno-cygwin -mthreads -DBOOST_WINDOWS_API -I/cygdrive/d/Softs/1.7/mgw-release/boost/include toto.cc -L/cygdrive/d/Softs/1.7/mgw-release/boost/lib -lboost_thread_win32 Recently, mingw32 runtime was updated for cygwin with the following message:
Implement TLS Callback.
* tlsmcrt.c: New file. * tlsmthread.c: Ditto. * tlssup.c: Ditto. * tlsthrd.c: Ditto. * Makefile.in: Include new files. * crt1.c: Implement TLS Callback. * dllcrt1.c: Ditto. * mthr_stub.c: Remove.
Any clue? Frédéric