Minimal plugin not found in static build although explicitly imported

1. Clone Qt.
   I did this in /tmp/qt-bisect:

   git clone git://code.qt.io/qt/qt5.git
   cd qt5/
   perl init-repository --module-subset=qtbase,qtsvg
   

2. Configure and build Qt.
   I did this in /tmp/qt-bisect/build-qt:

   /tmp/qt-bisect/qt5/configure -platform linux-clang -opensource -confirm-license -prefix $PWD/qtbase -release -static -no-gc-binaries -sanitize fuzzer-no-link -sanitize address -no-openssl && cmake --build .
   

3. To avoid QTBUG-92083, set compiler and linker flags:

   export CFLAGS="-O1 -fno-omit-frame-pointer -gline-tables-only -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize=address -fsanitize-address-use-after-scope -fsanitize=fuzzer-no-link"
   export CXXFLAGS="-O1 -fno-omit-frame-pointer -gline-tables-only -DFUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -fsanitize=address -fsanitize-address-use-after-scope -fsanitize=fuzzer-no-link"
   export LFLAGS=$CFLAGS
   

4. Build the svg fuzzer:

   /tmp/qt-bisect/build-qt/qtbase/bin/qt-cmake /tmp/qt-bisect/qt5/qtsvg/tests/libfuzzer/svg/qsvgrenderer/render/ && cmake --build .
   

5. Try running the fuzzer:

   ./render
   

   It fails with the error message:

   qt.qpa.plugin: Could not find the Qt platform plugin "minimal" in ""
   This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
   

Please note that the fuzzer's CMakeLists.txt already contains

qt_import_plugins(render
    INCLUDE Qt::QMinimalIntegrationPlugin
)

This caused oss-fuzz to wrongly close found issues.