/FIRST_INCLUDE

    FIRST_INCLUDE=(file[,...])
    NOFIRST_INCLUDE (D)

 Includes the specified files before any source files.  This
 qualifier corresponds to the Tru64 UNIX -FI switch.

 This qualifier is useful if you have command lines to pass to the C
 compiler that are exceeding the DCL command-line length limit.
 Using the /FIRST_INCLUDE qualifier can help solve this problem by
 replacing lengthy /DEFINE and /WARNINGS qualifiers with #define and
 #pragma message directives placed in a /FIRST_INCLUDE file.

 The default is NOFIRST_INCLUDE.