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90 Chapter 3
Linker Tasks
Using 64-bit Mode Linker Options
Using 64-bit Mode Linker Options
This section introduces 64-bit-only linker options.
Using the 64-bit Mode Linker with +compat or
+std
In the HP-UX 11.0 release, the linker toolset supports extended features
for linking in 64-bit mode. Since compatibility with the previous linker
toolset is a high priority, the 64-bit linker uses much of the old behavior
in the new toolset. The 64-bit mode linker includes two options to allow
you to instruct the linker to link in one of two modes:
• Compatibility mode, with the +compat option, to create a link and
operation in 32-bit style. Because of some object file format
restrictions, the mode is not completely compatible with the style of
the 32-bit linker.
• Standard mode, with the +std option, set by default in 64-bit mode,
to create a link and load operation in 64-bit style. This mode uses the
new behaviors and features of the 64-bit linker.
Using the Linker with +compat for Compatibility
Mode
The +compat option instructs the linker to do a 32-bit-style link.
When you use the +compat option, the linker:
• Uses 32-bit style shared library internal name processing.
• Lists all dependent shared libraries in a DT_HP_NEEDED entry the
dynamic table using the 32 bit-style shared library naming
conventions. These dependent libraries are recorded as compatibility
mode libraries even if they are really created as standard mode
dependent libraries.
• If an error occurs during the link, the linker creates an a.out
without the executable permission bits set.
• Does not use embedded paths at link time to find dependent
libraries.
• Considers the order of ld +b and +s.