[MacPorts] #45632: gcc47 @4.7.4_1 Build failure with Xcode 6.1 and Yosemite

[MacPorts]

#45632: gcc47 @4.7.4_1 Build failure with Xcode 6.1 and Yosemite
------------------------+--------------------------------
 Reporter:  klmarkey@…  |      Owner:  macports-tickets@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.2
 Keywords:              |       Port:  gcc47
------------------------+--------------------------------
 Build fails because of an apparent configuration error when upgrading
 octave or when attempting to reinstall gcc47 with OS X 10.10 and Xcode 6.1
 (from scratch per MacPorts guidelines).  I will attach the full log, but
 there are two errors in the build log.

 During initial configuration:
 {{{
 :info:build <built-in>:0:0: error: unknown value '10.10' of -mmacosx-
 version-min
 }}}

 and during configuration stage 1 when "checking for suffix of object
 files":

 {{{
 :info:build checking for x86_64-apple-darwin14-gcc...
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc47/gcc47/work/build/./gcc/xgcc
 -B/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc47/gcc47/work/build/./gcc/
 -B/opt/local/x86_64-apple-darwin14/bin/ -B/opt/local/x86_64-apple-
 darwin14/lib/ -isystem /opt/local/x86_64-apple-darwin14/include -isystem
 /opt/local/x86_64-apple-darwin14/sys-include
 :info:build checking for suffix of object files... configure: error: in
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc47/gcc47/work/build/x86_64
 -apple-darwin14/libgcc':
 :info:build configure: error: cannot compute suffix of object files:
 cannot compile
 }}}

 No config.log could be found.

 I was attempting to build gcc47 only as a dependency for port "octave"
 which also has gcc48 as a dependency.  Gcc48 builds correctly.  I'm not
 sure why Octave would require both compilers.  Nonetheless, I wished to
 report this build failure.

-- 
Ticket URL: <https://trac.macports.org/ticket/45632>
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