[MacPorts] #59252: Python27 has Linking issues with Xcode 11.1 and MacOS Catalina 10.15

[MacPorts]

#59252: Python27 has Linking issues with Xcode 11.1 and MacOS Catalina 10.15
--------------------------------------------+----------------------------
 Reporter:  IComplainInComments             |      Owner:  (none)
     Type:  defect                          |     Status:  new
 Priority:  Normal                          |  Milestone:  MacPorts 2.7.0
Component:  ports                           |    Version:
 Keywords:  python27, destroot, ld, linker  |       Port:  python27
--------------------------------------------+----------------------------
 Python27 fails to stage into the destroot. After looking through the logs
 its seems ld is missing symbols for the x86_64 arch {{{ld: symbol(s) not
 found for architecture x86_64 }}}. Building after port cleaning, and
 rebuilding without cleaning gives the same result.

 Here is a log snippet of where it gets funky

 {{{
 :info:destroot if !
 DYLD_FRAMEWORK_PATH=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/Python-2.7.16
 ../python.exe \
 :info:destroot                  -c 'import EasyDialogs' 2>/dev/null ; then
 \
 :info:destroot          echo "EasyDialogs not available in this Python -
 skipping Build Applet.app" ; \
 :info:destroot  else \
 :info:destroot
 DYLD_FRAMEWORK_PATH=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/Python-2.7.16
 ../python.exe ./scripts/BuildApplet.py \
 :info:destroot                  --destroot
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/destroot"
 \
 :info:destroot
 --python=/opt/local/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
 \
 :info:destroot                  --output
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/destroot/Applications/MacPorts/Python
 2.7/Build Applet.app" \
 :info:destroot                  ./scripts/BuildApplet.py && \
 :info:destroot          if [ -n "" ] ; then \
 :info:destroot                  rm
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/destroot/Applications/MacPorts/Python
 2.7/Build Applet.app/Contents/MacOS/Python" && \
 :info:destroot                  lipo  \
 :info:destroot                          -output
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/destroot/Applications/MacPorts/Python
 2.7/Build Applet.app/Contents/MacOS/Python" \
 :info:destroot                          ../python.exe ; \
 :info:destroot          fi \
 :info:destroot  fi
 :info:destroot EasyDialogs not available in this Python - skipping Build
 Applet.app
 :info:destroot cd PythonLauncher && make install
 DESTDIR=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/destroot
 :info:destroot make[2]: Entering directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/Python-2.7.16/Mac/PythonLauncher'
 :info:destroot /usr/bin/clang -L/opt/local/lib
 -Wl,-headerpad_max_install_names -L/opt/local/lib/db48
 -Wl,-syslibroot,/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk
 -arch x86_64 -o "Python Launcher" FileSettings.o MyAppDelegate.o
 MyDocument.o PreferencesWindowController.o doscript.o main.o -framework
 AppKit -framework Carbon
 :info:destroot Undefined symbols for architecture x86_64:
 :info:destroot   "_objc_opt_new", referenced from:
 :info:destroot       +[FileSettings getFactorySettingsForFileType:] in
 FileSettings.o
 :info:destroot       +[FileSettings getDefaultsForFileType:] in
 FileSettings.o
 :info:destroot       +[FileSettings newSettingsForFileType:] in
 FileSettings.o
 :info:destroot ld: symbol(s) not found for architecture x86_64
 :info:destroot clang: error: linker command failed with exit code 1 (use
 -v to see invocation)
 :info:destroot make[2]: *** [Python Launcher] Error 1
 :info:destroot make[2]: Leaving directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/Python-2.7.16/Mac/PythonLauncher'
 :info:destroot make[1]: *** [install_PythonLauncher] Error 2
 :info:destroot make[1]: Leaving directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/Python-2.7.16/Mac'
 :info:destroot make: *** [frameworkinstallapps] Error 2
 :info:destroot make: Leaving directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/Python-2.7.16'
 :info:destroot Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/Python-2.7.16"
 && /usr/bin/make -w frameworkinstall maninstall
 DESTDIR=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/work/destroot
 :info:destroot Exit code: 2
 :error:destroot Failed to destroot python27: command execution failed
 :debug:destroot Error code: CHILDSTATUS 3482 2
 :debug:destroot Backtrace: command execution failed
 :debug:destroot     while executing
 :debug:destroot "system {*}$notty {*}$nice $fullcmdstring"
 :debug:destroot     invoked from within
 :debug:destroot "command_exec destroot"
 :debug:destroot     (procedure "portdestroot::destroot_main" line 2)
 :debug:destroot     invoked from within
 :debug:destroot "$procedure $targetname"
 :error:destroot See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python27/python27/main.log
 for details.
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/59252>
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