HP SunSoft Pascal 4.0 - Manual (Page 99)

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Separate Compilation 5
This chapter describes how to compile Pascal programs in separate units.
Chapter 4, “Program Construction and Management,” gives an introduction to
the concepts in this chapter. Following are the sections:
In separate compilation, a program is divided into several units that can be
separately compiled into object (
.o ) files. The object files are then linked using
pc , which invokes pc3 to check for the consistent use of global names and
declarations across the different units, and then invokes ld (1) to link and load
the units. You can also give pc the names of all the units at once, in which case
pc compiles all the units, checks for consistency, and links the units in one
step.
Separate compilation is different from independent compilation. In
independent compilation, you invoke
ld directly, so there is no consistency
checking. Independent compilation is not addressed in this guide.
Working with Units
Pascal provides two types of source files or units: the program unit and the
module unit.
Working with Units page 75
Sharing Variables and Routines Across Multiple Units page 76
Sharing Declarations in Multiple Units page 87