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  1. Qt
  2. QTBUG-89476

[REG 5.15 -> 6.0] Configure doesn't build for release by default

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    • b4b33846b4dc703e637b7d365676345eda0da460 (qt/qtbase/dev) 5d6f2238548fe8415e84099fc14470e189c9e726 (qt/qtbase/6.0)

    Description

      1. Get configure's help: 
        ./configure -h

        It will show you:

          -release ............. Build Qt with debugging turned off [yes]

        In other words, release builds are meant to be the default when configuring Qt.

      2. Configure and build Qt.
        I used: 
        MAKEFLAGS=-j8 nice ~/dev/src/qtbase/configure -platform linux-clang -opensource -confirm-license -nomake examples -nomake tests -prefix $PWD && nice make -j8

        clang will not use flags "-DNDEBUG -O2". The resulting libQt6Core.so.6.0.0 will have 50MB. This does not seem to be a release build. When specifying "-release" explicitly, libQt6Core.so.6.0.0 will have less than 7MB.

      I think release builds should still be the default. If the change was intentional, at least configure's help text should be updated.

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        Issue Links

          depends on

          Task - A task that needs to be done. QTBUG-89410 Change default CMAKE_BUILD_TYPE to Release

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          relates to

          Task - A task that needs to be done. QTQAINFRA-4058 Test that configure gives release builds by default

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed

          Task - A task that needs to be done. QTQAINFRA-4059 New test, Qt6: run configure without parameters, verify default build mode

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          resulted from

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-87830 config.summary is missing

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-89122 Building Qt with cmake needs 15% more space than with qmake

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
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              qtbuildsystem Qt Build System Team
              rlohning Robert Löhning
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              Dates

                Created:
                Updated:
                Resolved:

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