Hi all, I recently need to link my application statically to the boost libraries. I am on a RHEL 5.3 (x86_64) system and compiling/linking with gcc 4.1.2. I built my boost 1.43.0 static libraries using follwing command line: ./bjam --build-dir="/tmp/boost_143.gcc41" threading=multi link=static runtime-link=static --prefix="/usr/local/boost1430-gcc41" --without-mpi --without-python --without-serialization --without-test --without-wave address-model=64 -d+2 --layout=tagged cxxflags="-fPIC -pipe -march=nocona -msse2 -pthread -Wno-multichar -DLINUX" My tools/build/v2/user-config.jam contains only using gcc ; I'll just take the example of the thread library for describing my problem. I can see that the all the wished libraries built fine, with a typical compile line being: "g++" -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -m64 -fPIC -pipe -march=nocona -msse2 -pthread -Wno-multichar -DLINUX -DBOOST_ALL_NO_LIB=1 -DBOOST_THREAD_BUILD_LIB=1 -DBOOST_THREAD_POSIX -DNDEBUG -I"." -c -o "/tmp/boost_143.build.gcc41/boost/bin.v2/libs/thread/build/gcc-4.1.2/rel ease/address-model-64/link-static/runtime-link-static/threading-multi/pt hread/thread.o" "libs/thread/src/pthread/thread.cpp" When i "su" and add "install" to the bjam command line above, all files install properly and /usr/local/boost1430-gcc41/lib is populated with static libraries like libboost_thread-mt-s.a Now i build my library that uses the boost thread library. A typical compile line is : /usr/bin/g++ -Wall -g -O3 -g -g -pipe -march=nocona -msse2 -pthread -Wno-multichar -DLINUX -fPIC -pthread -c -o obj/myfile.o myfile.cpp -I../include -I./ -I/usr/local/boost1430-gcc41/include/boost-1_43 -I/usr/local/cppunit1121-gcc41/include -I../include/mylib AR ../lib/libmylib.a Now i try to build the unit test for that library using : ar -rsc ../lib/libmylib.a obj/myfile.o LD /home/florent/dev/mylib/MylibTestMain /usr/bin/g++ -o /home/florent/dev/mylib/MylibTestMain obj/MylibTestMain.o obj/AUnitTest.o obj/AnotherUnitTest.o -L../lib -lmylib -L/usr/local/cppunit1121-gcc41/lib -lcppunit -ldl -L/usr/local/lib64 -L/usr/local/boost1430-gcc41/lib -lboost_thread-mt-s And i get a lot of undefined references: obj/AUnitTest.o: In function `AUnitTest::testAFunction()': undefined reference to `boost::thread_group::thread_group()' undefined reference to `boost::thread_group::join_all()' undefined reference to `boost::thread_group::~thread_group()' undefined reference to `boost::mutex::~mutex()' ... <snip> So my question is: how do i link properly statically with the boost libraries ? Is there any defined that i should be aware of while compiling my unit tests ? Thank you in advance, Florent Arnold & Richter Cine Technik GmbH & Co. Betriebs KG Sitz: Munchen - Registergericht: Amtsgericht Munchen - Handelsregisternummer: HRA 57918 Personlich haftender Gesellschafter: Arnold & Richter Cine Technik GmbH Sitz: Munchen - Registergericht: Amtsgericht Munchen - Handelsregisternummer: HRB 54477 Geschaftsfuhrer: Franz Kraus; Dr. Martin Prillmann A new star is born - ALEXA the most versatile digital camera system. Get all the latest information from arridigital.com and YouTube.