# Using Configuration Files

You can decrease the time you spend entering command-line options by using the configuration file to automate command-line entries. Configuration files are automatically processed every time you run the Intel® oneAPI DPC++/C++ Compiler. You can insert any valid command-line options into the configuration file. The compiler processes options in the configuration file in the order in which they appear, followed by the specified command-line options when the compiler is invoked.

### Note

Options in the configuration file are executed every time you run the compiler. If you have varying option requirements for different projects, use Using Response Files .

## Sample Configuration Files

### Note

Anytime you instruct the compiler to use a different configuration file, the default configuration file(s) are ignored.

The following examples illustrate basic configuration files. The pound (#) character indicates that the rest of the line is a comment.

In the Windows* examples, the compiler reads the configuration file and invokes the I option every time you run the compiler, along with any options specified on the command line.

Example
    ## Sample icpx.cfg file
      -I/my_headers
    ## Sample icx.cfg file
      /Ic:\my_headers

Parent topic: Compilation

## See Also

Supported Environment Variables
Using Response Files