Hi All, I am having trouble with regex on an Alpha-Dec with Compaq's compiler 6.3. I've got regex to compile with generic.mak as follows: CXX="cxx" CXXFLAGS="-inline-none" -D__USE_STD_IOSTREAM -DBOOST_REGEX_NO_EXTERNAL_TEMPLATES" LINKER="cxx" gnumake generic.mak but then it comes to the link step an error occures: ld: Unresolved: main Nevertheless, boost_regex.so is being build, but when I try to link an application with boost_regex.so I do get loads of errors concerning the C++ standard library: ld (prelink): /usr/lib/cmplrs/cxx/V6.3-008/libcxxstd.a(cxxl_std_init.o): std::cout: multiply defined Warning: std::basic_string<char, std::char_traits<char>, std::allocator<char> >::npos defined as GLOBAL RCONST but is defined in a shared lib as a GLOBAL OBJECT Warning: std::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::npos defined as GLOBAL RCONST but is defined in a shared lib as a GLOBAL OBJECT Warning: std::locale::collate defined as GLOBAL RCONST but is defined in a shared lib as a GLOBAL OBJECT Warning: std::locale::ctype defined as GLOBAL RCONST but is defined in a shared lib as a GLOBAL OBJECT Warning: std::locale::monetary defined as GLOBAL RCONST but is defined in a shared lib as a GLOBAL OBJECT Warning: std::locale::numeric defined as GLOBAL RCONST but is defined in a shared lib as a GLOBAL OBJECT ... Does anybody know what's wrong there? Both -D__USE_STD_IOSTREAM and -DBOOST_REGEX_NO_EXTERNAL_TEMPLATES are necessary to compile regex at all. -D__USE_STD_IOSTREAM tells the compiler to use the standard iostream library instead of the older non-standard version (which is the default for this platform). Without -DBOOST_REGEX_NO_EXTERNAL_TEMPLATES the compiler complains about some templates. I also tried to compile regex with gcc, but again I could not link the application. Linking gcc-compiled (c++) libraries with Compaq's object files and vice versa does not seem to work in generall. Building everything with gcc failed due to seome other incompatibilities. Thanks for any help. Ralf