B binding – HP SunSoft Pascal 4.0 User Manual

Page 48

Pascal 4.0 User’s Guide

–a

The

–a

option is the old style of basic block profiling for

tcov

. See

-xprofile=tcov

for information on the new style of profiling and the

tcov

(1) man page for more details. Also see the manual, Profiling Tools.

The

–a

option inserts code to count how many times each basic block is

executed. It also calls a runtime recording mechanism that creates a

file for

every

file at normal termination. The

file accumulates execution data for

the corresponding source file. The

tcov

(1) utility can then be run on the

source file to generate statistics about the program.

If set at compile-time, the

TCOVDIR

environment variable specifies the

directory of where the

files are located. If this variable is not set, then the

files remain in the same directory as the

files.

The

-xprofile=tcov

and the

-a

options are compatible in a single

executable. That is, you can link a program that contains some files which
have been compiled with

-xprofile=tcov

, and others with

-a

. You cannot

compile a single file with both options.

–B

binding

The

–B

option specifies whether libraries for linking are

static

(not shared,

indicated with

-Bstatic

), or

dynamic

(shared, indicated with

-Bdynamic

Link editing is the set of operations necessary to build an executable program
from one or more object files. Static linking indicates that the results of these
operations are saved to a file. Dynamic linking refers to these operations when
performed at runtime. The executable that results from dynamic linking
appears in the running process, but is not saved to a file.

–b

It is inefficient for Pascal to send each character to a terminal as it generates its
output. It is even less efficient if the output is the input of another program,
such as the line printer daemon,

lpr

(1).

To gain efficiency, Pascal buffers output characters; it saves the characters in
memory until the buffer is full and then outputs the entire buffer in one system
interaction. By default, Pascal output is line-buffered.