fastbind(1)

fastbind(1)

NAME

fastbind - prepare an incomplete executable for faster program start-up

SYNOPSIS

fastbind [-nu]incomplete-executable...

DESCRIPTION

fastbind is a tool that can improve the start-up time of programs that use shared libraries (incomplete executables) by storing information about needed shared library symbols in the executable ®le.

fastbind performs analysis on the symbols used to bind an executable and all of it's dependent shared libraries, and stores this information in the executable ®le. The next time the executable is run, the dynamic loader (/usr/lib/dld.sl for 32-bit PARISC or /usr/lib/pa20_64/dld.sl for 64-bit PARISC) will notice that this information is available, and it will use this fastbind information to bind the executable instead of the standard search method for binding the symbols.

Since fastbind writes the fastbind information in the executable ®le, you must have write permission on the executable ®le. Also, if the executable ®le being analyzed is being run as another process, the ®le will be locked against modi®cations by the kernel, and fastbind will fail.

If the shared libraries that an executable is dependent on are modi®ed after the fastbind information is created, the dynamic loader will silently revert to standard search method for binding the symbols. The fastbind information can be re-created by running fastbind on the executable again. fastbind will automatically erase the old fastbind information and generate the new one.

The ld option +fb can be used to instruct the linker to run the fastbind tool on an incomplete executable it has produced.

Environment Variables

If dld determines that the fastbind information is out of date, it will silently revert to standard search method for binding the symbols. If the environment variable _HP_DLDOPTS is set to -fbverbosethe dynamic loader will emit a warning message when the fastbind information is out of date.

The environment variable _HP_DLDOPTS can be set to -nofastbindto make the dynamic loader ignore the fastbind information and revert to the standard search method for binding the symbols.

Options

fastbind recognizes the following options:

-n

Remove the fastbind information from the executable, returning it to the same state it

 

was in before fastbind was originally run on it.

-u

Normally, if fastbind detects any unsatis®ed symbols while building the fastbind

 

information, it will generate an error message and not modify the executable ®le. When

 

fastbind is invoked with -uoption however, unresolved symbols are allowed.

EXTERNAL INFLUENCES

Environment Variables

The following internationalization variables affect the execution of fastbind:

LANG

Determines the locale category for native language, local customs and coded character set in the absence of LC_ALL and other LC_* environment variables. If LANG is not speci®ed or is set to the empty string, a default of C (see lang(5)) is used instead of LANG.

LC_ALL

Determines the values for all locale categories and has precedence over LANG and other LC_* environment variables.

LC_MESSAGES

Determines the locale that should be used to affect the format and contents of diagnostic messages written to standard error.

LC_NUMERIC

Determines the locale category for numeric formatting.

LC_CTYPE

Determines the locale category for character handling functions.

HP-UX Release 11i: December 2000

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