I develop a C++ code which uses boost::threads * This code performs perfectly well with the boost library wich comes with Debian sarge (libboost-thread1.32.0 for thread library). But I want a more complete implementation of boost (I want to use property tree library). So I have installed and compiled boost_1_33_1. * Using this library, all the programs which use the thread library segfault (at thread-create). Where is the problem ? With the Debian sarge library, I compile with the options: -DBOOST_HAS_THREADS -D_REENTRANT -O2 -funroll-all-loops -fomit-frame-pointer Do I need to change something? Did I missed something when I installed boost_1_33_1? In both cases, g++ version is 3.3.5. -- Thierry Dumont. Institut Camille Jordan -- Mathematiques-- Univ. Lyon I,43 Bd du 11 Novembre 1918, 69622 - Villeurbanne Cedex - France. Thierry.Dumont@maply.univ-lyon1.fr web: http://maply.univ-lyon1.fr/~tdumont