HP aC++ Release Notes Version A.03.95 (5900-1789; September 2011)

HP aC++ Release Notes
New Features in Version A.03.27
Chapter 1 57
Threads
As with prior compiler releases, one version of libstd_v2 is provided for use with both threaded and
non-threaded code. To compile threaded applications, macro -D_RWSTD_MULTI_THREAD must be used.
-D_THREAD_SAFE is no longer needed.
See HP aC++ Online Programmer’s Guide for more information.
Limitations
USL’s Standard Components Library (lib++.a) is not and will not be available with -AA.
Incremental Linking in 64-bit Mode
In the edit-compile-link-debug development cycle, link time is a significant component. With incremental
linking, any unchanged object files can be reused without being reprocessed. Incremental linking allows you
to insert object code into an output file (executable or shared library) that you created earlier, without
relinking any unmodified object files. Time required to relink after the initial incremental link depends on
the number of modules you modify.
To use incremental linking, specify the +ild option on the aCC command line. If the output file does not
already exist or if it was created without the +ild option, the linker performs an initial incremental link. The
output file produced is suitable for subsequent incremental links.
The +ild option is valid in 64-bit mode for both executable and shared library links. The +ild option is not
valid for relocatable links, options (or tools) that strip the output module, and with some optimization
options.
In certain situations (for example, when internal padding space is exhausted), the incremental linker must
perform an initial incremental link. You can avoid such unexpected initial incremental links by periodically
rebuilding the output file with the +ildrelink option.
You can debug the resulting executable or shared library produced by the incremental linker using the WDB
debugger with incremental-linking support.
See Online Linker and Libraries User’s Guide (ld +help) and ld(1) manpage for more information.