Hi, I've got problems compiling a program using boost with CMake (using Windows and MinGW 4.7.2, with -G "MinGW Makefiles"). Boost is compiled normaly with b2.exe --toolset=gcc --prefix=C:\cppLib\boost_1_55_0 and the folder seems to contain the right files. The original CMake-File compiled fine using Ubuntu. I've got a code using only boost::log and a CMake File containing the following boost-related-code: ADD_DEFINITIONS("-std=c++0x") SET(BOOST_ROOT "C:/cppLib/boost_1_55_0/") link_libraries (${Boost_LIBRARIES}) find_package( Boost 1.54.0 COMPONENTS log) if(Boost_FOUND) MESSAGE("Boost found") include_directories(${Boost_INCLUDE_DIRS}) add_executable(Hasselbrack ${AUTO_SOURCES}) endif() This code works right, but when I call make, I get the following errors: In file included from C:/cppLib/boost_1_55_0/boost/log/expressions/formatters/c_decorator.hpp:21:0, from C:/cppLib/boost_1_55_0/boost/log/expressions/formatters.hpp:29, from C:/cppLib/boost_1_55_0/boost/log/expressions.hpp:26, from C:\Users\DaGeRe\cpp\Minimalprojekt\main.cpp:3: C:/cppLib/boost_1_55_0/boost/log/detail/snprintf.hpp:45:9: Fehler: ╗::swprintf½ wurde nicht deklariert C:/cppLib/boost_1_55_0/boost/log/detail/snprintf.hpp:46:9: Fehler: ╗::vswprintf½ wurde nicht deklariert In file included from C:/cppLib/boost_1_55_0/boost/log/expressions/formatters.hpp:29:0, from C:/cppLib/boost_1_55_0/boost/log/expressions.hpp:26, from C:\Users\DaGeRe\cpp\Minimalprojekt\main.cpp:3: C:/cppLib/boost_1_55_0/boost/log/expressions/formatters/c_decorator.hpp: In statischer Elementfunktion ╗static std::size_t boost::log::v2s_mt_nt5::exp ressions::aux::c_decorator_traits<wchar_t>::print_escaped(wchar_t (&)[N], wchar_t)½: C:/cppLib/boost_1_55_0/boost/log/expressions/formatters/c_decorator.hpp:110:43: Fehler: ╗swprintf½ ist kein Element von ╗boost::log::v2s_mt_nt5::aux½ I tried to figure it out, the lines in snprintf are the following: using ::snprintf; using ::vsnprintf; but I can't find an error in this. The Include in the beginning of the file: #ifdef BOOST_LOG_USE_WCHAR_T #include <wchar.h> #endif // BOOST_LOG_USE_WCHAR_T seems to be exectued right (according to http://pubs.opengroup.org/onlinepubs/7990989775/xsh/wchar.h.html, snprintf is declared here). If I don't use ADD_DEFINITIONS("-std=c++0x"), I got the following errors: CMakeFiles\Hasselbrack.dir/objects.a(main.cpp.obj):main.cpp:(.text+0x12c): undefined reference to `boost::log::v2s_mt_nt5::core::get()' CMakeFiles\Hasselbrack.dir/objects.a(main.cpp.obj):main.cpp:(.text+0x143): undefined reference to `boost::log::v2s_mt_nt5::core::set_filter(boost::log ::v2s_mt_nt5::filter const&)' CMakeFiles\Hasselbrack.dir/objects.a(main.cpp.obj):main.cpp:(.text+0x1c7): undefined reference to `boost::log::v2s_mt_nt5::trivial::logger::get()' CMakeFiles\Hasselbrack.dir/objects.a(main.cpp.obj):main.cpp:(.text+0x20b): undefined reference to `boost::log::v2s_mt_nt5::trivial::logger::get()' CMakeFiles\Hasselbrack.dir/objects.a(main.cpp.obj):main.cpp:(.text+0x2e7): undefined reference to `std::ios_base::Init::~Init()' CMakeFiles\Hasselbrack.dir/objects.a(main.cpp.obj):main.cpp:(.text+0x308): undefined reference to `std::ios_base::Init::Init()' c:/mingw/bin/../lib/gcc/mingw32/4.7.2/../../../../mingw32/bin/ld.exe: CMakeFiles\Hasselbrack.dir/objects.a(main.cpp.obj): bad reloc address 0x1b in se ction `.text$_ZN5boost6detail15sp_counted_base7releaseEv[__ZN5boost6detail15sp_counted_base7releaseEv]' c:/mingw/bin/../lib/gcc/mingw32/4.7.2/../../../../mingw32/bin/ld.exe: final link failed: Invalid operation But nevertheless, boost is found and I can't figure out CMake seems to be unable to link it. The output of $(Boost_LIBRARIES) from CMake also seems correct: C:/cppLib/boost_1_55_0/stage/lib/libboost_log-mgw47-mt-1_55.dll . So I got no clue anymore what I could try. Has anybody an hint how to solve this? Best Regards, DaGeRe