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Detect modified files during qmake

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qmakeqmake makefileqmake-qt5qt5.5system command
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  • O Offline
    O Offline
    onurA
    wrote on 2 Mar 2016, 12:27 last edited by
    #1

    How does qt detect if the build is necessary or not, e.g. if a source file or in my case a resource file (.qrc) was modified after the last build? Is there a flag for each file?
    What I exactly want to do is, to send a system command for resource compilation by adding this to the .pro file:
    system(rcc -binary -no-compress resource.qrc -o resource.rcc)
    And I want to do it only if the resource.qrc file modified after the last qmake. Is that possible and how?

    Final version should be: if(resource_modified) {COMPILE RESOURCE}

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    • J Offline
      J Offline
      jsulm
      Lifetime Qt Champion
      wrote on 2 Mar 2016, 13:30 last edited by
      #2

      For source files (c/c++) it is not the job for qmake - this is done by make.
      For built in resource files it is probably the same - make detects whether the resource file was changed or not.

      https://forum.qt.io/topic/113070/qt-code-of-conduct

      O 1 Reply Last reply 3 Mar 2016, 10:03
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      • J jsulm
        2 Mar 2016, 13:30

        For source files (c/c++) it is not the job for qmake - this is done by make.
        For built in resource files it is probably the same - make detects whether the resource file was changed or not.

        O Offline
        O Offline
        onurA
        wrote on 3 Mar 2016, 10:03 last edited by
        #3

        @jsulm
        I need it for the rcc command. Whenever I run rcc in terminal, the binary output is re-generated, although the .qrc is the same.

        Is there a way to check it in qmake for example? Like a flag?
        Thanks in advance!

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        2/3

        2 Mar 2016, 13:30

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