[MacPorts] #60001: installing pdftk it fails to build libgcc7

[MacPorts]

#60001: installing pdftk it fails to build libgcc7
--------------------+--------------------
 Reporter:  ffm-fg  |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:
--------------------+--------------------
 Looking in
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc7/libgcc7/main.log

 the last messages are

 :info:build ld: unexpected token: !tapi-tbd-v3 file
 '/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/lib/libc.tbd'
 for architecture x86_64
 :info:build ld: warning: could not create compact unwind for
 __Unwind_RaiseException: does not use RBP or RSP based frame
 :info:build ld: warning: could not create compact unwind for
 __Unwind_ForcedUnwind: does not use RBP or RSP based frame
 :info:build ld: warning: could not create compact unwind for
 __Unwind_Resume: non-standard register 0 being saved in prolog
 :info:build ld: warning: could not create compact unwind for
 __Unwind_Resume_or_Rethrow: non-standard register 0 being saved in prolog
 :info:build collect2: error: ld returned 1 exit status
 :info:build make[3]: *** [libgcc_s.dylib] Error 1
 :info:build make[3]: Leaving directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc7/libgcc7/work/build/x86_64
 -apple-darwin19/libgcc'
 :info:build make[2]: *** [all-stage1-target-libgcc] Error 2
 :info:build make[2]: Leaving directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc7/libgcc7/work/build'
 :info:build make[1]: *** [stage1-bubble] Error 2
 :info:build make[1]: Leaving directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc7/libgcc7/work/build'
 :info:build make: *** [bootstrap-lean] Error 2
 :info:build make: Leaving directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc7/libgcc7/work/build'
 :info:build Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc7/libgcc7/work/build"
 && /usr/bin/make -j4 -w bootstrap-lean
 :info:build Exit code: 2
 :error:build Failed to build libgcc7: command execution failed
 :debug:build Error code: CHILDSTATUS 37281 2
 :debug:build Backtrace: command execution failed
 :debug:build     while executing
 :debug:build "system {*}$notty {*}$nice $fullcmdstring"
 :debug:build     invoked from within
 :debug:build "command_exec build"
 :debug:build     (procedure "portbuild::build_main" line 8)
 :debug:build     invoked from within
 :debug:build "$procedure $targetname"
 :error:build See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc7/libgcc7/main.log
 for details.

-- 
Ticket URL: <https://trac.macports.org/ticket/60001>
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