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The steps involved in compiling, assembling, and linking a program that has been compiled using MinGW are:

1. Create the source code: The first step in compiling a program is to write the source code. The source code is written using a text editor and saved with an appropriate file extension like .c or .cpp.

2. Compilation: In this step, the source code is converted into object code using a compiler. MinGW uses a variant of the GCC (GNU Compiler Collection) compiler. The compiler reads the source code and generates an assembly code as output.

3. Assembly: The assembly code generated in the previous step is then assembled into machine code using an assembler. An assembler converts the assembly code into a machine-readable format that can be executed by the computer. MinGW comes with the GNU assembler or GAS that converts the assembly code into object files.

4. Linking: In the final step, the object files from the previous steps are linked with other required libraries and the executable file is generated. The linker is responsible for resolving all the external references in the program and combining them to form a single executable file. MinGW comes with the GNU linker or LD that is used for linking.

Specific information about each step:

1. Create Source Code: In this step, the developer uses a text editor to write the source code for the program. The developer can choose any text editor they feel comfortable with but make sure the file is saved with the appropriate file extension.

2. Compilation: Once the developer has created the source code, they must compile it by using the MinGW GCC compiler. The GCC compiler reads the source code and generates assembly code as output. The developer can use the command "gcc –c program.c" to create the object file.

3. Assembly: The assembler takes the assembly code generated by the compiler and converts it into machine code. This translation is specific to the computer's hardware. The developer can use the GAS tool to assemble the code. The developer can use the command "as program.s –o program.o" to assemble the code.

4. Linking: For a C or C++ program, there may be other libraries like DLL or shared objects that are required for the program. The linker resolves all the external references in the program and combines them to form a single executable file. The developer can use the GNU linker tool or LD tool to link the object files. The developer can use the command "gcc -o program program.o -l library" to link the object files with libraries.

In summary, compile, assemble, and link are the three crucial stages to convert the source code to executable files. MinGW toolset provides developer-friendly and easy-to-use compilers, assemblers, and linkers to create efficient code.