Build Qt5.15.9 from sources. First run of "make -j1 install" fails. Second run works.

I was building Qt5.15.9 from the sources on a Mac mini with Apple M1 processor and on this machine there was never before installed Qt or performed any built of a Qt version from the source. So there should be no left overs from previous builds.

I have installed Xcode 12.5.1 and then I used the Qt5.15.9 sources archive downloaded from my Qt account and used for the configuration step:

./configure -debug-and-release -nomake examples -nomake tests QMAKE_APPLE_DEVICE_ARCHS="x86_64 arm64" -skip qtwebengine

For the build process (which finished successfully) I have used:

make -j14

For the installation:

sudo make -j1 install

There could be seen the following error message:

The macosx platform SDK has been changed from version 11.3 to version 11.3
This requires a fresh build of your project. Please wipe the build directory

See also attached screen shot and the attached file InstallStepWithErrorMessage.txt with the complete text from the output in the terminal.

When starting the install step once again, there was no more raised an error message and the installation process completed successfully.
Therefore it is not a critical issue for me.