http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51468
--- Comment #4 from Dwight Walker <dwight at wwwalker dot com.au> 2011-12-08 17:40:16 UTC --- C:\Users\Dwight>gcc -v Using built-in specs. Target: i686-w64-mingw32 Configured with: ../gcc44-svn/configure --target=i686-w64-mingw32 --host=i686-w6 4-mingw32 --disable-multilib --disable-nls --disable-win32-registry --prefix=/mi ngw32 --with-gmp=/mingw32 --with-mpfr=/mingw32 --enable-languages=c,c++ Thread model: win32 gcc version 4.4.3 (GCC) I don't know what library dlopen etc are in. I am googling it. Surely there is a simple config (bat file, .ini, config file, command line switch) I can use to fix this bug.