User's Guide

-Bextern:filename

The file indicated by filename is expected to contain a list of symbols, separated by spaces or

newlines. These symbols are assigned the default export class.

-Bhidden

The specified symbols, or all symbols if no symbols are specified, are assigned the hidden export

class. The hidden export class is similar to the protected export class. In addition, hidden symbols

will not be exported outside the current load module. The linker may eliminate them from a shared

library, but in an executable, they remain accessible to the debugger unless +Oprocelim is also

specified.

When used with no symbol list, -Bhidden implies -Wl,-aarchive_shared, causing the linker

to prefer an archive library over a shared library if one is available. This can be overridden by

following the -Bhidden option with a subsequent -Wl,-a option.

Usage:

-Bhidden=symbol[,symbol...]

The named symbols, or all symbols if no symbols are specified, are assigned the hidden export

class.

-Bhidden:filename

The file indicated by filename is expected to contain a list of symbols separated by spaces or

newlines. These symbols are assigned the hidden export class.

-Bhidden_def

This option is the same as -Bhidden, but only locally defined (non-tentative) symbols, without

__declspec(dllexport), are assigned the hidden export class.

-Bprotected

-Bprotected[=symbol[,symbol...]]

The specified symbols, or all symbols if no symbols are specified, are assigned the protected export

class. That means these symbols will not be preempted by symbols from other load modules, so

the compiler may bypass the linkage table for both code and data references and bind them to

locally defined code and data symbols.

When used with no symbol list, -Bprotected implies -Wl,-aarchive_shared, causing the

linker to prefer an archive library over a shared library, if one is available. This can be overridden

by following the -Bprotected option with a subsequent -Wl,-a option.

Usage:

-Bprotected:filename

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

symbols are assigned the protected export class.

-Bprotected_data

The -Bprotected_data option marks only data symbols as having the protected export class.

-Bprotected_def

90 Command-Line Options