Hi Ryan, Thank you very much for your reply. > On 9 Sep 2022, at 1:44 pm, Ryan Schmidt = wrote: >=20 > On Aug 30, 2022, at 20:57, Ian Wadham wrote: >>=20 >> I recently purchased a new MacBook Pro with Monterey O/S and = installed MacPorts on it from scratch. >>=20 >> I installed the qt4-mac port successfully, but kdelibs4 refused to = install because the qt4-mac port did >> not support arm64 architecture and i am on an Apple Silicon arm64 = machine. >>=20 >> The problem arose because the installation process for qt4-mac = included the steps: >>=20 >> =E2=80=94> Attempting to fetch qt4-mac-4.8.7_13.darwin_21.x86_64.tbz = from https://packages.macports.org/qt4-mac >> =E2=80=94> Attempting to fetch = qt4-mac-4.8.7_13.darwin_21.x86_64.tbz.rmd160 from = https://packages.macports.org/qt4-mac >>=20 >> The second step succeeded, i.e. MacPorts itself downloaded an = inappropriate package for an Apple >> Silicon machine. I noticed that some (maybe not all) of qt4-mac=E2=80=99= s dependencies were compiled or >> downloaded as arm64 code and, curiously, some of Qt4=E2=80=99s = utility apps work on my machine, perhaps >> due to the Rosetta emulator stepping in and taking over. >>=20 >> The kdelibs4 install failed in the =E2=80=9CComputing = dependencies=E2=80=A6=E2=80=9D step, saying =E2=80=9CError: Cannot = install kdelibs4 for >> the arch arm64 because its dependency qt4-mac only supports the archs = =E2=80=98ppc ppc64 i386 x86_64=E2=80=99=E2=80=9D >>=20 >> Is this a bug or is it the end of the line for kdelibs4 on arch64? = Can kdelibs4 really build as arch64? And what >> about its (enormous) list of other dependencies? Do they all build = for arch64? >>=20 >> If there is a bug here, I think it is that MacPorts can download a = package for an inappropriate architecture. >=20 > MacPorts correctly installed qt4-mac for x86_64 on your machine = because qt4-mac does not support arm64. The x86_64 qt4-mac will work on = your arm64 Mac via Rosetta 2 dynamic translation. >=20 > kdelibs4, and all other ports that use qt4-mac, need to be declared to = be arm64-incompatible, due to qt4-mac's arm64 incompatibility. >=20 > See https://trac.macports.org/ticket/65765 >=20 Even if someone can get kdelibs4 and qt4-mac to play nicely together on = arm64 Apple Silicon architecture, using Rosetta, I don=E2=80=99t hold = out much hope for kdelibs4=E2=80=99s other dependencies, which are = numerous and complex and quite huge.=20 They are one reason why the KDE team switched to a radically different = library organisation called Frameworks or KF5, based on Qt5. I think most of the KDE apps have been ported and are up-to-date on KF5 = and Qt5 and installable in Linux and Windows. But availability on Mac = appears to be a grey area (pace Homebrew). The KDE4 versions of the apps still work quite well on MacPorts on an = x86_64 machine, although KMyMoney4 no longer works for me on my older = MacBook (2017 vintage). Cheers, Ian Wadham.=