Understanding of /MT, /MTd, /MD, /MDd options when compiling static and dynamic link libraries for VC
Most people know that in the Windows development process, to achieve code reuse, it will be packaged into an interface, and then packaged into a library form, which has a static library and a dynamic library. The advantage of the dynamic library is that it can reduce the size of the application, and only need to replace the DLL when upgrading, and truly modularization.
But this static library or dynamic library actually has two ways when using the C/C++ runtime library. One is to link the multi-threaded static libraries libcmt.lib and libcpmt.lib, use the /MT option; the other is to link more The thread dynamic link libraries MSVCRXX.DLL and MSVCPXX.DLL use the /MD option. The small d behind is actually the meaning of the debug version, so in fact only the difference between MT and MD.
Explain here that a library is like a module of a product, and it may depend on other modules to work. For example, if you buy an electronic product without a battery, you need to dynamically link to the battery. If you buy a battery, it is equivalent to a statically linked battery.
That is to say: not only the library linked by the application has static and dynamic points, but the library itself also links to the system runtime library (this is inevitable because the C/C++ system library function is called), and different link methods lead to This difference, in general, mt is larger than the static library of the md type.
When creating a static library or dynamic link library using VC, set it from the project's property page, as shown below:
Reference link:
Finally understand what is the content library, and libcmt msvcrt and other c / c ++ runtime
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