How do I Create files needed to build and use DLLs under Linux?

To create files needed to build and use dynamic link libraries (DLLs) under Linux, you can use the "gcc" compiler and the "ld" linker. "gcc" is a compiler that can be used to compile C and C++ code into object files, and "ld" is a linker that can be used to link object files and libraries into a single executable or shared library (DLL).

Here are the steps to create a DLL under Linux using "gcc" and "ld":

1. Write the source code for the DLL. The source code should contain functions that you want to make available to other programs that will use the DLL.

2. Compile the source code into object files using "gcc". For example:

gcc -c -fPIC SOURCE.c

Replace "SOURCE.c" with the name of the source file. The "-c" option tells "gcc" to compile the source code into object files, and the "-fPIC" option tells "gcc" to create position-independent code, which is required for shared libraries.

3. Link the object files into a shared library using "ld". For example:

ld -shared -o LIBRARY.so OBJECT.o

Replace "LIBRARY.so" with the name that you want to give to the shared library, and "OBJECT.o" with the name of the object file. The "-shared" option tells "ld" to create a shared library, and the "-o" option specifies the name of the output file.

4. With these steps, you should have created a DLL (shared library) that can be used by other programs on your Linux system.

Note: Building and using DLLs under Linux is a complex process that requires a good understanding of C and C++ programming, as well as the tools and libraries that are available on the system. Consult the documentation for "gcc" and "ld" for more information on the available options and usage examples.