ld_pa.1 (2010 09)

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ld_pa(1) PA-RISC Systems Only
ld_pa(1)
When used with the +ild option, if you change the offset after the initial incremen-
tal link, the linker performs an initial incremental link automatically.
-T In 32-bit mode, save the load data and relocation information in temporary files
instead of in memory during linking. This option reduces the virtual memory
requirements of the linker. If the TMPDIR environment variable is set, the tem-
porary files are created in the specified directory, rather than in
/var/tmp.
In 64-bit mode, this option is equivalent to the
+nommap option.
-V Output a message giving information about the version of
ld being used.
-Z Allow run-time dereferencing of null pointers. See the discussions of
-Z
and
pointers in cc(1). (This is the complement of the
-z option.)
-Pd Reorder debuggable functions. Ordinarily -P does not reorder functions from
.o
files with debugging information, because reordering renders them non-debuggable.
This option overrides this and reorders the functions. Reordering is based on link
order file produced from flow.data by default. If you specify the
-PF option, the
linker uses the specified link order file, instead of
flow.data, for reordering.
This option is incompatible with
+ild.
-PD filename Save link order file generated by
fdp during linking with -P option into user-
specified file. This option is incompatible with the
+ild option.
-PF filename Indicate to the linker to use the specified file for the linker file instead of generating
it using /usr/ccs/bin/fdp
. This option is incompatible with the +ild option.
+afs func_sym_x=func_sym_y ...
Instruct the linker to replace the function symbol with an alternate function symbol
in shared library and executable file links.
The
+afs option supports function symbol aliasing. Often user programs have
functions that exactly match the functionality of optimized library functions with a
different name. These user-defined functions are usually called frequently in the
program. With the +afs option, you can make significant gains in performance by
replacing all references to a user-defined function with references to a tuned library
function during link time, thus optimizing these functions with just a relink.
Both functions must define the same number and type of parameters, and return a
value of the same type. If they do not match, the results are unpredictable, and the
linker does not generate a warning message.
Example:
$
ld ... +afs func_sym1=func_sym2
...
In the example, the linker replaces all references to the function symbol func_sym1
with references to func_sym2 . The func_sym2 symbol should be an normal
unaliased symbol. It cannot appear on the left-hand side of "=" on another
+afs
option.
You can specify more than one function symbol alias on the command line with mul-
tiple option-symbol pairs, that is, each symbol pair you specify must be preceded by
the
+afs option.
+allowdups Allows multiple symbol definitions. By default, multiple symbol definitions that
occur between relocatable objects will result in a fatal error condition. This option
suppresses the error condition and allows the first symbol definition to be taken.
+b path_list Specify a colon-separated list of directories (embedded path) to be searched at pro-
gram run-time to locate shared libraries needed by the executable output file that
were specified with either the -l or -l: option.
An argument consisting of a single colon (
:) indicates that ld should build the list
using all the directories specified by the -L option and the LPATH environment
variable (see the +s option).
For 32-bit links, if multiple
+b options appear on the link line, the FIRST one
specified is recorded. Also, a double colon (::) is interpreted as location in which
libraries are found at link time.
6 Hewlett-Packard Company − 6 − HP-UX 11i Version 3: September 2010