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A MINGW DLL build of GMP can be used with Microsoft C. Libtool doesn’t
install a .lib format import library, but it can be created with MS lib as follows, and copied to the install directory. Similarly for libmp and libgmpxx . cd .libs
lib /def:libgmp-3.dll.def /out:libgmp-3.lib MINGW uses the C runtime library ‘ msvcrt.dll ’ for I/O, so applications
wanting to use the GMP I/O routines must be compiled with ‘ cl /MD ’ to do
the same.