iTS 1.0+)

Introduction to SCREEN COBOL

Compaq NonStop™ Pathway/iTS SCREEN COBOL Reference Manual—426750-001

1-9

Generating Object Files With the Compiler

To execute a SCREEN COBOL program, the directory and code files must be available

to the TCP. The symbol-table file is required when INSPECT is used for program

debugging. In addition to generating object code, the compiler builds a SCREEN

COBOL library. Each time the compiler successfully compiles a source program, the

compiler adds the new version of the object file to the previously compiled versions.

The compiler, however, has no features for managing the object files.

Figure 1-5

illustrates the generating of SCREEN COBOL object files. In this figure,

input to the compiler includes the program source code and code copied from a screen

library file. The compiler output includes three object files (code, directory, and symbol

table) and a listing that can include a compilation listing, a cross-reference listing, and a

map.

Figure 1-5. Generating SCREEN COBOL Object Files

Note. In earlier releases, the version of the TCP under which a SCREEN COBOL program

was executed had to be the same or later than that of the SCREEN COBOL compiler under

which the program was compiled. For D40 and later releases, the version of the TCP under

which a SCREEN COBOL program is executed can also be earlier than that of the SCREEN

COBOL compiler unless it uses newer incompatible features, in which case the program will be

assigned the version corresponding to the latest feature used. For example, you can now use

a C31 TCP with a SCREEN COBOL program compiled under a D40 compiler provided the

SCREEN COBOL program does not use any new incompatible features. New data structures,

new statements, and new versions of statements are often generated by a given release of the

compiler. These enhancements can be processed only by a TCP of the same or a later

release.

005CDT .CDD

Symbol

Table