[RTEMS Project] #2830: throwing std::runtime on PC BSP fails.

[RTEMS trac]

#2830: throwing std::runtime on PC BSP fails.
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 Reporter:  Chris Johns  |       Owner:  Needs Funding
     Type:  defect       |      Status:  assigned
 Priority:  normal       |   Milestone:  Indefinite
Component:  unspecified  |     Version:  5
 Severity:  normal       |  Resolution:
 Keywords:               |  Blocked By:
 Blocking:               |
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Comment (by Michael Davidsaver):

 I may have answered part of my question with a lucky grep of the gcc
 source.  I found 'gcc/config/i386/t-rtems' which seems to show that the
 different multilib versions are built with '-mtune=...', and presumably
 defaulting to '-march=i386'.  RTEMS itself in
 '<prefix>/make/custom/pc686.cfg' has '-march=pentium'.  What is the logic
 here?

 {{{
 MULTILIB_OPTIONS = mtune=i486/mtune=pentium/mtune=pentiumpro msoft-float
 MULTILIB_DIRNAMES= m486 mpentium mpentiumpro soft-float
 MULTILIB_MATCHES = msoft-float=mno-80387
 MULTILIB_MATCHES += mtune?pentium=mtune?k6 mtune?pentiumpro=mtune?athlon
 MULTILIB_EXCEPTIONS = \
 mtune=pentium/*msoft-float* \
 mtune=pentiumpro/*msoft-float*
 }}}

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Ticket URL: <http://devel.rtems.org/ticket/2830#comment:10>
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