qt4-mac @4.8.7_10 (aqua): Fails to build on Big Sur w/ arm64 architecture

[maralski (Peter Marelas)]

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

[maralski (Peter Marelas)]

main.log