[MacPorts] #56922: Libgcc7 @7.3.0_1 fails to build on PPC Tiger, Mac OS X 10.4.11, because comparison of stages 2 and 3 fails

[MacPorts]

#56922: Libgcc7 @7.3.0_1 fails to build on PPC Tiger, Mac OS X 10.4.11, because
comparison of stages 2 and 3 fails
------------------------+--------------------
  Reporter:  ballapete  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.5.3
Resolution:             |   Keywords:  tiger
      Port:  libgcc7    |
------------------------+--------------------

Comment (by ballapete):

 A new build has started. This time I added `--with-dwarf2` to the
 `configure` options. This option is only used by GCC's `configure` script:

 {{{
 find
 /opt/local/var/macports/build/_opt_local_var_macports_sources_lil.fr.rsync.macports.org_release_tarballs_ports_lang_gcc7/libgcc7
 -type f -name configure -exec grep -in -e -dwarf {} /dev/null \;
 .../libgcc7/work/gcc-7.3.0/gcc/configure:1718:  --with-dwarf2
 force the default debug format to be DWARF 2
 .../libgcc7/work/gcc-7.3.0/gcc/configure:7588:# Check whether --with-
 dwarf2 was given.
 .../libgcc7/work/gcc-7.3.0/gcc/configure:11524:then tm_file="$tm_file tm-
 dwarf2.h"
 }}}

 Could be the new compiler version is set up to use DWARF-4 format by
 default as is the default for g++ 7.3.

-- 
Ticket URL: <https://trac.macports.org/ticket/56922#comment:24>
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