Hi, for a project which consists of a dynamic library and an exectuable I need to use mudflap. Since this is delivered software, building is working out of the box without mudflap. Now I'd like to use mudflap: I added -fmudflapth to the compiler and linker options, and -lmudflapth to the linker options. The build of the dynamic library works. the build of the executable fails with some linker error "undefined reference to typeinfo " When I compare the library symbols from both configuration (with or without mudflap) I discover that with mudflap more symbols show up as undefined, when I examine the dynamic library with nm, especially from classes where no instances are requested in libraries translation unit. Unfortunately, the mudflap doc doesn't mention such a side effect. gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/i586-suse-linux/4.7/lto-wrapper Target: i586-suse-linux Configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib --libexecdir=/usr/lib --enable-languages=c,c++,objc,fortran,obj-c++,java,ada --enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.7 --enable-ssp --disable-libssp --disable-libitm --disable-plugin --with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' --disable-libgcj --with-slibdir=/lib --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch --enable-version-specific-runtime-libs --enable-linker-build-id --program-suffix=-4.7 --enable-linux-futex --without-system-libunwind --with-arch-32=i586 --with-tune=generic --build=i586-suse-linux Thread model: posix gcc version 4.7.1 20120723 [gcc-4_7-branch revision 189773] (SUSE Linux) error message (incomplete) ../bin/libsdk.so: undefined reference to `typeinfo name for boost::re_detail::abstract_protected_call' ../bin/libsdk.so: undefined reference to `vtable for boost::exception_detail::error_info_container' ../bin/libsdk.so: undefined reference to `mpl_::integral_c<unsigned int, 4u>::value' ../bin/libsdk.so: undefined reference to `mpl_::int_<7>::value' ../bin/libsdk.so: undefined reference to `typeinfo for boost::io::out_of_range' ../bin/libsdk.so: undefined reference to `mpl_::int_<5>::value' ../bin/libsdk.so: undefined reference to `boost::re_detail::cpp_regex_traits_implementation<char>::mask_unicode' The C++ libraries, which I'm linking to(qt and boost), are compiled with gcc 4.1.x. I know that this may lead to trouble, but I don't believe that it should do a change in the visibility of symbols. So if anyone can give hints, I would really appreciate it. Franz
