How to Compile C Code as a Library

The C programming language lets you create code for executable or dynamic link library (DLL) files. A DLL contains several functions that you can allow other users to call from other applications. You must specify that the compiler sets up a DLL file instead of an EXE file in the compiler options. You can use the cl.exe utility to compile a DLL in C.

Instructions

    • 1

      Click the Windows "Start" button and type "cmd" in the search text box. Press "Enter" to open the command prompt.

    • 2

      Type "cd path" where "path" is the location of your C source code file. Press "Enter" to move to the location of the file.

    • 3

      Type the following code to compile the C source code to the DLL file:

      cl.exe --output myfile.dll myfile.cpp

      Replace "myfile.dll" with the name of the DLL you want to use for the link file. Replace "myfile.cpp" with your own C source code file.

    • 4

      Press "Enter" to compile the program. After the compiler completes the creation of the DLL, type "dir" and press "Enter." You should see the DLL file in your directory.

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