5.13.2 Including Other Source Files

To include another source file in an assembler source file, use the ‘include’ directive:

        include string_literal

The argument string_literal specifies a (quoted) absolute or relative path to an included file. The base directory for the relative path is:

• – a directory containing a file with the ‘include’ directive;
• – a base directory specified as a preprocessing parameter if the name of the file with the ‘include’ directive is unknown;
• – a current working directory if the base directory not specified as a preprocessing parameter.

The directive must be on a line of its own after at least one whitespace character at the beginning of the line. The directive must not occur within a macro definition. The maximum nesting level of ‘include’ directives is 100.