HP aC++/HP C A.06.20 Programmer's Guide

aCC -Wl,-a,archive,-m,-v file.o -lm

This case is similar to the previous example, with additional options. -m indicates that

a load map should be produced. The -v option requests verbose messages from the

linker.

Symbol Binding Options

The following -B options are recognized by the compiler to specify whether references

to global symbols may be resolved to symbols defined in the current load module, or

whether they must be assumed to be potentially resolved to symbols defined in another

load module.

A global symbol is one that is visible by name across translation unit boundaries. A

static symbol is one that is visible by name only within a single translation unit but is

not associated with a particular procedure activation. A locally defined symbol is a

global or static symbol with a definition in the translation unit from which it is being

referenced.

-Bdefault

Global symbols are assigned the default export class. These symbols may be imported

or exported outside of the current load module. The compiler will access tentative and

undefined symbols through the linkage table. Any symbol that is not assigned to another

export class through use of another -B option (or the deprecated +O[no]extern

option) will have the default export class. The -Bdefault option may also be used

on a per symbol basis to specify exceptions to global -Bprotected, -Bhidden, and

-Bextern options.

Usage:

-Bdefault=symbol[,symbol...]

The named symbols are assigned the default export class.

-Bdefault:filename

The file indicated by filename contains a list of symbols, separated by spaces or

newlines. These symbols are assigned the default export class.

-Bextern

The specified symbols, or all undefined symbols if no list is provided, are assigned to

default export class. Additionally, the compiler will inline the import stub for calls to

these symbols. No compile time binding of these symbols will be done. All references

to these symbols will be through the linkage table, so an unnecessary performance

penalty will occur if -Bextern is applied to a listed symbol that is resolved in the

same load module.

116 Command-Line Options