Hello,
I would like to update the documentation of these compiler flags and
have some questions. The -ffunction-sections and -fdata-sections
documentation is currently:
"Place each function or data item into its own section in the output
file if the target supports arbitrary sections. The name of the function
or the name of the data item determines the section’s name in the output
file.
Use these options on systems where the linker can perform optimizations
to improve locality of reference in the instruction space. Most systems
using the ELF object format and SPARC processors running Solaris 2 have
linkers with such optimizations. AIX may have these optimizations in the
future.
Only use these options when there are significant benefits from doing
so. When you specify these options, the assembler and linker create
larger object and executable files and are also slower. You cannot use
|gprof| on all systems if you specify this option, and you may have
problems with debugging if you specify both this option and -g."
The end-of-life of Solaris 2.6 was 2006. Is it worth to mention this here?
This "AIX may have these optimizations in the future." is there since at
least 1996. What is the current AIX status?
Is the "Only use these options when there are significant benefits from
doing so. When you specify these options, the assembler and linker
create larger object and executable files and are also slower. You
cannot use |gprof| on all systems if you specify this option, and you
may have problems with debugging if you specify both this option and
-g." still correct on the systems of today?
Do these options affect the code generation?
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
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