ld_pa.1 (2010 09)

l
ld_pa(1) PA-RISC Systems Only
ld_pa(1)
+vallcompatwarnings
This option is accepted but ignored by the 64-bit
ld. Show more detail for any
warnings about compatibility issues. By default, only a terse message is printed.
See the WARNINGS section below for further details.
+v[no]compatwarnings
This option is accepted but ignored by the 64-bit
ld. Enable [disable] printing
warnings about compatibility issues between systems. This includes any functional-
ity which may change in future releases. The default is
+vcompatwarnings
.
See the WARNINGS section below for further details.
+v[no]shlibunsats
Enable [disable] printing a list of unsatisfied symbols used by shared libraries. The
default behavior in shared library build is +vnoshlibunsats
, and the default in
executable build is
+vshlibunsats
. Some unsatisfied symbols reported by the
linker are not required at run time because the modules which reference the sym-
bols are not used.
+FP flag Specify how the environment for floating-point operations should be initialized at
program start-up. By default, modes are specified by the IEEE floating-point stan-
dard: all traps disabled, gradual underflow, and rounding to nearest.
The
+FP option supports the following modes (upper case flag enables; lower case
flag disables):
V (v) Trap on invalid floating-point operations
Z (z) Trap on divide by zero
O (o) Trap on floating-point overflow
U (u) Trap on floating-point underflow
I (i) Trap on floating-point operations that produce inexact results.
D (d) Enable sudden underflow (flush to zero) of denormalized values.
RU Enable rounding upward (toward +Infinity).
RD Enable rounding downward (toward -Infinity).
RZ Enable rounding toward zero (truncate, chop).
RN Enable rounding to nearest (the default).
NOTE: Enabling sudden underflow is an undefined operation on PA-
RISC 1.0-based systems, but it is defined on all subsequent versions of
PA-RISC. Selecting this flag enables sudden underflow only if it is avail-
able on the processor being used at run-time.
More than one mode can be specified with a comma separated list. For example:
+FP D,O,V,RZ
specifies sudden underflow, trapping on overflow and invalid, and rounding toward
zero. The commas and the space between +FP and the modes may be omitted.
Thus, +FPDOVRZ is equivalent to +FP D,O,V,RZ.
To dynamically change these settings at run-time, see fesettrapenable(3M),
fesetflushtozero (3M), and fesetround (3M).
+I symbol Specify the name of the initializer function when building a shared library. A
shared library may have multiple initializers specified. Initializers are executed in
the order that they are specified. You can specify more than one initializer, but
each must be preceded by +I. For more details on the initializer function, refer to
the +help option or the HP-UX Linker and Libraries User’s Guide manual.
+O[no]fastaccess
Enable [disable] fast access to global data. The linker rearranges the data to
further reduce the number of ADDIL instructions in the executable.
This optimization may reveal some subtle programming errors related to assump-
tions about data layout. This optimization can occur at optimization levels 2, 3 and
4. The default is
+Onofastaccess at optimization levels 2 and 3, and +Ofas-
taccess at optimization level 4.
HP-UX 11i Version 3: September 2010 − 11 − Hewlett-Packard Company 11