Hi I'm some weeks trying to resolve a problem in static linking a boost library. The compiler finds the library but it says that it is incompatible. I already try to compile boost again with arm compiler, use boost 1_33_1 and boost_1_42_0 but with no results. I think it's missing something but I can't find what. ./configure -host=arm-eabi CC=arm-none-linux-gnueabi-gcc CXX=arm-none-linux-gnueabi-g++ CXXFLAGS=-static --with-boost=/usr/local/boost_1_42_0/ configure: WARNING: If you wanted to set the --build type, don't use --host. If a cross compiler is detected then cross compile mode will be used. checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for arm-eabi-strip... no checking for strip... strip checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... no checking for mawk... mawk checking whether make sets $(MAKE)... yes checking for arm-eabi-gcc... arm-none-linux-gnueabi-gcc checking for C compiler default output file name... a.out checking whether the C compiler works... yes checking whether we are cross compiling... yes checking for suffix of executables... checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether arm-none-linux-gnueabi-gcc accepts -g... yes checking for arm-none-linux-gnueabi-gcc option to accept ISO C89... none needed checking for style of include used by make... GNU checking dependency style of arm-none-linux-gnueabi-gcc... gcc3 checking whether we are using the GNU C++ compiler... yes checking whether arm-none-linux-gnueabi-g++ accepts -g... yes checking dependency style of arm-none-linux-gnueabi-g++... gcc3 checking for boostlib >= 1.31... yes checking build system type... i686-pc-linux-gnu checking whether the Boost::Thread library is available... yes checking for exit in -lboost_thread... no checking for exit in -lboost_thread... (cached) no checking for exit in -lboost_thread... (cached) no configure: error: Could not link against boost_thread ! * Config.log:* configure:4066: checking whether the Boost::Thread library is available configure:4098: arm-none-linux-gnueabi-g++ -c -pthread -static -I/usr/local/boost_1_42_0//include conftest.cpp >&5 configure:4098: $? = 0 configure:4113: result: yes configure:4142: checking for exit in -lboost_thread configure:4167: arm-none-linux-gnueabi-gcc -o conftest -g -O2 -I/usr/local/boost_1_42_0//include -L/usr/local/boost_1_42_0//lib conftest.c -lboost_thread >&5 conftest.c:20: warning: conflicting types for built-in function 'exit' /home/carlos/arm/arm-2009q3/bin/../lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/bin/ld: skipping incompatible /usr/local/boost_1_42_0//lib/libboost_thread.so when searching for -lboost_thread /home/carlos/arm/arm-2009q3/bin/../lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/bin/ld: skipping incompatible /usr/local/boost_1_42_0//lib/libboost_thread.a when searching for -lboost_thread /home/carlos/arm/arm-2009q3/bin/../lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/bin/ld: skipping incompatible /home/carlos/arm/arm-2009q3/bin/../arm-none-linux-gnueabi/libc/usr/lib/libboost_thread.a when searching for -lboost_thread /home/carlos/arm/arm-2009q3/bin/../lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/bin/ld: skipping incompatible /home/carlos/arm/arm-2009q3/bin/../arm-none-linux-gnueabi/libc/usr/lib/libboost_thread.a when searching for -lboost_thread /home/carlos/arm/arm-2009q3/bin/../lib/gcc/arm-none-linux-gnueabi/4.4.1/../../../../arm-none-linux-gnueabi/bin/ld: cannot find -lboost_thread collect2: ld returned 1 exit status