[RTEMS Project] #3262: GCC-4 Build failure with GCC-4.3+

[RTEMS trac]

#3262: GCC-4 Build failure with GCC-4.3+
----------------------+--------------------------
 Reporter:  Gedare    |       Owner:  Chris Johns
     Type:  defect    |      Status:  assigned
 Priority:  normal    |   Milestone:  4.10.3
Component:  tool/rsb  |     Version:  4.10
 Severity:  normal    |  Resolution:
 Keywords:            |
----------------------+--------------------------

Comment (by Chris Johns):

 The change posted in the description is not suitable. The flags cannot be
 set on `make`'s command line this way as it overrides any RSB derived flag
 updates. A better solution is to use:
 {{{
  #
  %global _gcclibdir %{_prefix}/lib

 +#
 +# Update the build flags need to build the older gcc with newer
 compilers.
 +#
 +%define build_cflags %{build_cflags} -fgnu89-inline
 }}}
 The `-fgnu89-inline` is not needed on FreeBSD, adding it does not harm the
 build.

 The FreeBSD builds all fail with the same problem reported in #3027 on the
 4.11 branch, building `makeinfo`. Adding the patch from that ticket lets
 the ARM architecture build but it then fails with a number of these error
 messages:
 {{{
 ../../../../gcc-4.4.7/libgcc/../gcc/config/arm/ieee754-sf.S: Assembler
 messages:
 ../../../../gcc-4.4.7/libgcc/../gcc/config/arm/ieee754-sf.S:452: Error:
 invalid constant (ff) after fixup
 ../../../../gcc-4.4.7/libgcc/../gcc/config/arm/ieee754-sf.S:518: Error:
 invalid constant (7f) after fixup
 }}}

--
Ticket URL: <http://devel.rtems.org/ticket/3262#comment:6>
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