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(as.info)R

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Join Data and Text Sections: `-R'
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   `-R' tells `as' to write the object file as if all data-section data
lives in the text section.  This is only done at the very last moment:
your binary data are the same, but data section parts are relocated
differently.  The data section part of your object file is zero bytes
long because all its bytes are appended to the text section.  (Note:
Sections and Relocation.)

   When you specify `-R' it would be possible to generate shorter
address displacements (because we do not have to cross between text and
data section).  We refrain from doing this simply for compatibility with
older versions of `as'.  In future, `-R' may work this way.

   When `as' is configured for COFF output, this option is only useful
if you use sections named `.text' and `.data'.

   `-R' is not supported for any of the HPPA targets.  Using `-R'
generates a warning from `as'.