[MacPorts] #61789: qt4-mac @4.8.7_10 (aqua): Fails to build on Big Sur w/ amd64 architecture

[MacPorts]

#61789: qt4-mac @4.8.7_10 (aqua): Fails to build on Big Sur w/ amd64 architecture
----------------------+--------------------
 Reporter:  maralski  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.6.4
 Keywords:            |       Port:  q4-mac
----------------------+--------------------
 Error from main.log

 :debug:configure system:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_aqua_qt4-mac/qt4-mac/work
 /qt-everywhere-opensource-src-4.8.7" && ./configure -v -confirm-license
 -opensource -prefix /opt/local/libexec/qt4 -bindir
 /opt/local/libexec/qt4/bin -libdir /opt/local/libexec/qt4/lib -docdir
 /opt/local/libexec/qt4/share/doc -headerdir /opt/local/libexec/qt4/include
 -plugindir /opt/local/libexec/qt4/share/plugins -importdir
 /opt/local/libexec/qt4/share/imports -datadir /opt/local/libexec/qt4/share
 -translationdir /opt/local/libexec/qt4/share/translations -sysconfdir
 /opt/local/libexec/qt4/share/sysconf -examplesdir
 /opt/local/libexec/qt4/share/examples -demosdir
 /opt/local/libexec/qt4/share/demos -openssl-linked -dbus-linked -fast -no-
 pch -framework -no-phonon -no-phonon-backend --jobs=8 -no-sql-db2 -no-sql-
 ibase -no-sql-oci -no-sql-tds -no-sql-mysql -no-sql-odbc -no-sql-psql -no-
 sql-sqlite -no-sql-sqlite2 -nomake demos -nomake examples -release -no-
 declarative-debug -arch "arm64" -sdk
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.0.sdk

 :info:configure Determining system architecture... (Darwin:20.1.0:arm64)

 :info:configure     'macosx' is supported

 :info:configure System architecture: 'macosx'

 :info:configure Unknown architecture: "arm64". Supported architectures:
 x86[i386] ppc x86_64 ppc64 arm armv6 armv7

 :info:configure Command failed:  cd "/opt/local/var/macports/build

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Ticket URL: <https://trac.macports.org/ticket/61789>
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