xscale_be-ld.1

Intel ixp425 toolchain

Generate relocatable output\-\-\-i.e., generate an output file that can in
turn serve as input to \fBld\fR.  This is often called \fIpartial
linking\fR.  As a side effect, in environments that support standard Unix
magic numbers, this option also sets the output file's magic number to
\&\f(CW\*(C`OMAGIC\*(C'\fR.
If this option is not specified, an absolute file is produced.  When
linking \*(C+ programs, this option \fIwill not\fR resolve references to
constructors; to do that, use \fB\-Ur\fR.
.Sp
When an input file does not have the same format as the output file,
partial linking is only supported if that input file does not contain any
relocations.  Different output formats can have further restrictions; for
example some \f(CW\*(C`a.out\*(C'\fR\-based formats do not support partial linking
with input files in other formats at all.
.Sp
This option does the same thing as \fB\-i\fR.
.IP "\fB\-R\fR \fIfilename\fR" 4
.IX Item "-R filename"
.PD 0
.IP "\fB\-\-just\-symbols=\fR\fIfilename\fR" 4
.IX Item "--just-symbols=filename"
.PD
Read symbol names and their addresses from \fIfilename\fR, but do not
relocate it or include it in the output.  This allows your output file
to refer symbolically to absolute locations of memory defined in other
programs.  You may use this option more than once.
.Sp
For compatibility with other \s-1ELF\s0 linkers, if the \fB\-R\fR option is
followed by a directory name, rather than a file name, it is treated as
the \fB\-rpath\fR option.
.IP "\fB\-s\fR" 4
.IX Item "-s"
.PD 0
.IP "\fB\-\-strip\-all\fR" 4
.IX Item "--strip-all"
.PD
Omit all symbol information from the output file.
.IP "\fB\-S\fR" 4
.IX Item "-S"
.PD 0
.IP "\fB\-\-strip\-debug\fR" 4
.IX Item "--strip-debug"
.PD
Omit debugger symbol information (but not all symbols) from the output file.
.IP "\fB\-t\fR" 4
.IX Item "-t"
.PD 0
.IP "\fB\-\-trace\fR" 4
.IX Item "--trace"
.PD
Print the names of the input files as \fBld\fR processes them.
.IP "\fB\-T\fR \fIscriptfile\fR" 4
.IX Item "-T scriptfile"
.PD 0
.IP "\fB\-\-script=\fR\fIscriptfile\fR" 4
.IX Item "--script=scriptfile"
.PD
Use \fIscriptfile\fR as the linker script.  This script replaces
\&\fBld\fR's default linker script (rather than adding to it), so
\&\fIcommandfile\fR must specify everything necessary to describe the
output file.    If \fIscriptfile\fR does not exist in
the current directory, \f(CW\*(C`ld\*(C'\fR looks for it in the directories
specified by any preceding \fB\-L\fR options.  Multiple \fB\-T\fR
options accumulate.
.IP "\fB\-u\fR \fIsymbol\fR" 4
.IX Item "-u symbol"
.PD 0
.IP "\fB\-\-undefined=\fR\fIsymbol\fR" 4
.IX Item "--undefined=symbol"
.PD
Force \fIsymbol\fR to be entered in the output file as an undefined
symbol.  Doing this may, for example, trigger linking of additional
modules from standard libraries.  \fB\-u\fR may be repeated with
different option arguments to enter additional undefined symbols.  This
option is equivalent to the \f(CW\*(C`EXTERN\*(C'\fR linker script command.
.IP "\fB\-Ur\fR" 4
.IX Item "-Ur"
For anything other than \*(C+ programs, this option is equivalent to
\&\fB\-r\fR: it generates relocatable output\-\-\-i.e., an output file that can in
turn serve as input to \fBld\fR.  When linking \*(C+ programs, \fB\-Ur\fR
\&\fIdoes\fR resolve references to constructors, unlike \fB\-r\fR.
It does not work to use \fB\-Ur\fR on files that were themselves linked
with \fB\-Ur\fR; once the constructor table has been built, it cannot
be added to.  Use \fB\-Ur\fR only for the last partial link, and
\&\fB\-r\fR for the others.
.IP "\fB\-\-unique[=\fR\fI\s-1SECTION\s0\fR\fB]\fR" 4
.IX Item "--unique[=SECTION]"
Creates a separate output section for every input section matching
\&\fI\s-1SECTION\s0\fR, or if the optional wildcard \fI\s-1SECTION\s0\fR argument is
missing, for every orphan input section.  An orphan section is one not
specifically mentioned in a linker script.  You may use this option
multiple times on the command line;  It prevents the normal merging of
input sections with the same name, overriding output section assignments
in a linker script.
.IP "\fB\-v\fR" 4
.IX Item "-v"
.PD 0
.IP "\fB\-\-version\fR" 4
.IX Item "--version"
.IP "\fB\-V\fR" 4
.IX Item "-V"
.PD
Display the version number for \fBld\fR.  The \fB\-V\fR option also
lists the supported emulations.
.IP "\fB\-x\fR" 4
.IX Item "-x"
.PD 0
.IP "\fB\-\-discard\-all\fR" 4
.IX Item "--discard-all"
.PD
Delete all local symbols.
.IP "\fB\-X\fR" 4
.IX Item "-X"
.PD 0
.IP "\fB\-\-discard\-locals\fR" 4
.IX Item "--discard-locals"
.PD
Delete all temporary local symbols.  For most targets, this is all local
symbols whose names begin with \fBL\fR.
.IP "\fB\-y\fR \fIsymbol\fR" 4
.IX Item "-y symbol"
.PD 0
.IP "\fB\-\-trace\-symbol=\fR\fIsymbol\fR" 4
.IX Item "--trace-symbol=symbol"
.PD
Print the name of each linked file in which \fIsymbol\fR appears.  This
option may be given any number of times.  On many systems it is necessary
to prepend an underscore.
.Sp
This option is useful when you have an undefined symbol in your link but
don't know where the reference is coming from.
.IP "\fB\-Y\fR \fIpath\fR" 4
.IX Item "-Y path"
Add \fIpath\fR to the default library search path.  This option exists
for Solaris compatibility.
.IP "\fB\-z\fR \fIkeyword\fR" 4
.IX Item "-z keyword"
The recognized keywords are \f(CW\*(C`initfirst\*(C'\fR, \f(CW\*(C`interpose\*(C'\fR,
\&\f(CW\*(C`loadfltr\*(C'\fR, \f(CW\*(C`nodefaultlib\*(C'\fR, \f(CW\*(C`nodelete\*(C'\fR, \f(CW\*(C`nodlopen\*(C'\fR,
\&\f(CW\*(C`nodump\*(C'\fR, \f(CW\*(C`now\*(C'\fR, \f(CW\*(C`origin\*(C'\fR, \f(CW\*(C`combreloc\*(C'\fR, \f(CW\*(C`nocombreloc\*(C'\fR 
and \f(CW\*(C`nocopyreloc\*(C'\fR.
The other keywords are
ignored for Solaris compatibility. \f(CW\*(C`initfirst\*(C'\fR marks the object
to be initialized first at runtime before any other objects.
\&\f(CW\*(C`interpose\*(C'\fR marks the object that its symbol table interposes
before all symbols but the primary executable. \f(CW\*(C`loadfltr\*(C'\fR marks
the object that its filtees be processed immediately at runtime.
\&\f(CW\*(C`nodefaultlib\*(C'\fR marks the object that the search for dependencies
of this object will ignore any default library search paths.
\&\f(CW\*(C`nodelete\*(C'\fR marks the object shouldn't be unloaded at runtime.
\&\f(CW\*(C`nodlopen\*(C'\fR marks the object not available to \f(CW\*(C`dlopen\*(C'\fR.
\&\f(CW\*(C`nodump\*(C'\fR marks the object can not be dumped by \f(CW\*(C`dldump\*(C'\fR.
\&\f(CW\*(C`now\*(C'\fR marks the object with the non-lazy runtime binding.
\&\f(CW\*(C`origin\*(C'\fR marks the object may contain \f(CW$ORIGIN\fR.
\&\f(CW\*(C`defs\*(C'\fR disallows undefined symbols.
\&\f(CW\*(C`combreloc\*(C'\fR combines multiple reloc sections and sorts them
to make dynamic symbol lookup caching possible.
\&\f(CW\*(C`nocombreloc\*(C'\fR disables multiple reloc sections combining.
\&\f(CW\*(C`nocopyreloc\*(C'\fR disables production of copy relocs.
.IP "\fB\-(\fR \fIarchives\fR \fB\-)\fR" 4
.IX Item "-( archives -)"
.PD 0
.IP "\fB\-\-start\-group\fR \fIarchives\fR \fB\-\-end\-group\fR" 4
.IX Item "--start-group archives --end-group"
.PD
The \fIarchives\fR should be a list of archive files.  They may be
either explicit file names, or \fB\-l\fR options.
.Sp
The specified archives are searched repeatedly until no new undefined
references are created.  Normally, an archive is searched only once in
the order that it is specified on the command line.  If a symbol in that
archive is needed to resolve an undefined symbol referred to by an
object in an archive that appears later on the command line, the linker
would not be able to resolve that reference.  By grouping the archives,
they all be searched repeatedly until all possible references are
resolved.
.Sp
Using this option has a significant performance cost.  It is best to use
it only when there are unavoidable circular references between two or
more archives.
.IP "\fB\-assert\fR \fIkeyword\fR" 4
.IX Item "-assert keyword"
This option is ignored for SunOS compatibility.
.IP "\fB\-Bdynamic\fR" 4
.IX Item "-Bdynamic"
.PD 0
.IP "\fB\-dy\fR" 4
.IX Item "-dy"
.IP "\fB\-call_shared\fR" 4
.IX Item "-call_shared"
.PD
Link against dynamic libraries.  This is only meaningful on platforms
for which shared libraries are supported.  This option is normally the
default on such platforms.  The different variants of this option are
for compatibility with various systems.  You may use this option
multiple times on the command line: it affects library searching for
\&\fB\-l\fR options which follow it.
.IP "\fB\-Bgroup\fR" 4
.IX Item "-Bgroup"
Set the \f(CW\*(C`DF_1_GROUP\*(C'\fR flag in the \f(CW\*(C`DT_FLAGS_1\*(C'\fR entry in the dynamic
section.  This causes the runtime linker to handle lookups in this
object and its dependencies to be performed only inside the group.
\&\fB\-\-no\-undefined\fR is implied.  This option is only meaningful on \s-1ELF\s0
platforms which support shared libraries.
.IP "\fB\-Bstatic\fR" 4
.IX Item "-Bstatic"
.PD 0
.IP "\fB\-dn\fR" 4
.IX Item "-dn"
.IP "\fB\-non_shared\fR" 4
.IX Item "-non_shared"
.IP "\fB\-static\fR" 4
.IX Item "-static"
.PD
Do not link against shared libraries.  This is only meaningful on
platforms for which shared libraries are supported.  The different
variants of this option are for compatibility with various systems.  You
may use this option multiple times on the command line: it affects
library searching for \fB\-l\fR options which follow it.
.IP "\fB\-Bsymbolic\fR" 4
.IX Item "-Bsymbolic"
When creating a shared library, bind references to global symbols to the
definition within the shared library, if any.  Normally, it is possible
for a program linked against a shared library to override the definition
within the shared library.  This option is only meaningful on \s-1ELF\s0
platforms which support shared libraries.
.IP "\fB\-\-check\-sections\fR" 4
.IX Item "--check-sections"
.PD 0
.IP "\fB\-\-no\-check\-sections\fR" 4
.IX Item "--no-check-sections"
.PD
Asks the linker \fInot\fR to check section addresses after they have
been assigned to see if there any overlaps.  Normally the linker will
perform this check, and if it finds any overlaps it will produce
suitable error messages.  The linker does know about, and does make
allowances for sections in overlays.  The default behaviour can be
restored by using the command line switch \fB\-\-check\-sections\fR.
.IP "\fB\-\-cref\fR" 4
.IX Item "--cref"
Output a cross reference table.  If a linker map file is being
generated, the cross reference table is printed to the map file.
Otherwise, it is printed on the standard output.
.Sp
The format of the table is intentionally simple, so that it may be
easily processed by a script if necessary.  The symbols are printed out,
sorted by name.  For each symbol, a list of file names is given.  If the
symbol is defined, the first file listed is the location of the
definition.  The remaining files contain references to the symbol.
.IP "\fB\-\-no\-define\-common\fR" 4
.IX Item "--no-define-common"
This option inhibits the assignment of addresses to common symbols.
The script command \f(CW\*(C`INHIBIT_COMMON_ALLOCATION\*(C'\fR has the same effect.
.Sp
The \fB\-\-no\-define\-common\fR option allows decoupling
the decision to assign addresses to Common symbols from the choice
of the output file type; otherwise a non-Relocatable output type
forces assigning addresses to Common symbols.
Using \fB\-\-no\-define\-common\fR allows Common symbols that are referenced
from a shared library to be assigned addresses only in the main program.
This eliminates the unused duplicate space in the shared library,
and also prevents any possible confusion over resolving to the wrong
duplicate when there are many dynamic modules with specialized search
paths for runtime symbol resolution.
.IP "\fB\-\-defsym\fR \fIsymbol\fR\fB=\fR\fIexpression\fR" 4
.IX Item "--defsym symbol=expression"
Create a global symbol in the output file, containing the absolute
address given by \fIexpression\fR.  You may use this option as many
times as necessary to define multiple symbols in the command line.  A
limited form of arithmetic is supported for the \fIexpression\fR in this
context: you may give a hexadecimal constant or the name of an existing
symbol, or use \f(CW\*(C`+\*(C'\fR and \f(CW\*(C`\-\*(C'\fR to add or subtract hexadecimal
constants or symbols.  If you need more elaborate expressions, consider
using the linker command language from a script.  \fINote:\fR there should be no white
space between \fIsymbol\fR, the equals sign (``\fB=\fR''), and
\&\fIexpression\fR.
.IP "\fB\-\-demangle[=\fR\fIstyle\fR\fB]\fR" 4
.IX Item "--demangle[=style]"
.PD 0
.IP "\fB\-\-no\-demangle\fR" 4
.IX Item "--no-demangle"
.PD
These options control whether to demangle symbol names in error messages
and other output.  When the linker is told to demangle, it tries to
present symbol names in a readable fashion: it strips leading
underscores if they are used by the object file format, and converts \*(C+
mangled symbol names into user readable names.  Different compilers have
different mangling styles.  The optional demangling style argument can be used
to choose an appropriate demangling style for your compiler.  The linker will
demangle by default unless the environment variable \fB\s-1COLLECT_NO_DEMANGLE\s0\fR
is set.  These options may be used to override the default.
.IP "\fB\-\-dynamic\-linker\fR \fIfile\fR" 4