[MacPorts] #67687: "couldn't open .qmake.cache" when compiling Qt-based program

[MacPorts]

#67687: "couldn't open .qmake.cache" when compiling Qt-based program
----------------------+--------------------
 Reporter:  szhorvat  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  qtads
----------------------+--------------------
 When I try to compile QTads from source, I get the following error:

 {{{
 :debug:configure qt5 PortGroup: Qt is provided by qt5
 :debug:configure Executing proc-pre-org.macports.configure-configure-1
 :debug:configure Active variants check for source-type install considers
 depends_fetch depends_extract depends_lib depends_build depends_run: xz
 libsdl2 libsndfile mpg123 fluidsynth libvorbis qt5-qtbase qt5-qtsvg
 pkgconfig
 :debug:configure Executing proc-pre-org.macports.configure-configure-2
 :error:configure Failed to configure qtads: couldn't open
 "/opt/local/var/macports/build/_Users_szhorvat_macports-
 ports_games_qtads/qtads/work/qtads-3.3.0-source/.qmake.cache": no such
 file or directory
 :debug:configure Error code: NONE
 :debug:configure Backtrace: couldn't open "/opt/local/var/macports/build
 /_Users_szhorvat_macports-
 ports_games_qtads/qtads/work/qtads-3.3.0-source/.qmake.cache": no such
 file or directory
 :debug:configure     while executing
 :debug:configure "$pre $targetname"
 :error:configure See /opt/local/var/macports/logs
 /_Users_szhorvat_macports-ports_games_qtads/qtads/main.log for details.
 }}}

 I was able to compile QTads in the past with the same version of its
 portfile. I expect something might have changed in the Qt/qmake
 portgroups?

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Ticket URL: <https://trac.macports.org/ticket/67687>
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