ld_ia.1 (2011 09)

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ld_ia(1) Integrity Systems Only
ld_ia(1)
direct bind information (see -B direct), the dynamic loader will search inter-
poser libraries first. If the symbol cannot be resolved to any interposing libraries,
the direct binding information will be used.
+k Direct the linker to only create an executable if there were no errors encountered
during the link. If there were errors found (system errors or unresolved refer-
ences), the output file will be removed.
+[no]lazyload
Enable [disable] lazy loading of shared libraries. For
+lazyload libraries, load-
ing is deferred until a reference is made to that library during execution. Both the
+lazyload and +nolazyload options may appear on the link line at the same
time. The mode that is specified, either explicitly or by default, remains on for all
subsequent libraries on the link line until the next occurrence of the one of these
two options.
Libraries satisfying one or more of the following conditions are ineligible for lazy
loading:
• is a filter library
• is accessed via a data reference from another module
• is accessed via an indirect function call
The linker will silently convert such libraries into
+nolazyload libraries.
Dependent libraries of
+lazyload shared libraries will not be processed during
link time, unless they are explicitly specified on the link line.
Lazy loading can be disabled at runtime by setting the
LD_NOLAZYLOAD
environ-
ment variable.
+mergeseg Sets a flag in the executable which causes the dynamic loader to merge all data seg-
ments of shared libraries loaded at startup time into one block. Data segments for
each dynamically loaded library will also be merged with the data segments of
dependent libraries. This increases run-time performance by allowing the kernel to
use larger size page table entries.
+mmap Enables the feature to use mmap for writing the output data. This is the default
behavior. Linker enabled with mmap is much faster.
+n Cause the linker to load all object modules before searching any archive or shared
libraries. The linker then searches the archive and shared libraries specified on the
command line in left to right order. It repeats the left to right search of the
libraries on the command line until there are no more unsatisfied symbols, or the
last search added no new definitions. This option is useful if two libraries are
specified that have symbol dependencies on each other.
+nobss Pads the data segment with zeros, so that the data segment can be mapped with a
single call to mmap at runtime. Normally, data segments require one mmap call for
file-backed storage and a second mmap call for blank static storage (bss). Use of
this option increases your output file size.
+nodefaultmap
Do not use the default memory map. You must supply a mapfile through the -k
linker option.
+nodynhash Disable the default linker behavior of the +gst option to create the .dynhash sec-
tion for executables or shared libraries. Use this option to eliminate generation of
pre-computed hash table information for a library or an executable that is rarely
used with the global symbol table lookup scheme or for which the overhead of stor-
ing pre-computed hash values is too high. This option has no effect when used with
the -r option.
+noenvvar Instruct the dynamic loader to ignore the dynamic path searching environment
variables, LD_LIBRARY_PATH, SHLIB_PATH, and $ORIGIN at runtime. By
default, or if you specify the +std option, the dynamic loader looks at the environ-
ment variables, that is, the environment variables are enabled. If you specify the
+compat option or the +noenvvar option, the option takes effect and the dynamic
loader ignores the variables (the environment variables are disabled). See the
HP-UX 11i Version 3: September 2011 − 11 − Hewlett-Packard Company 11