[Buildroot] [PATCH 1/1] python-sip: fix compile error

[Ralf Dragon]

Dear all,

here is my conclusion regarding sip6:

The library discontinues the "sip" tool that configure.py of pyqt5 
searches. Instead, one should use PyQt-builder (which is easy to 
package) and the sip-build tool [1]. However, when I get it working I 
run into the same problem which once was fixed python-pyqt5.mk: 
sip-build actually does compile and executes a test binary called 
cfgtest_QtCore, similar to what a configure.sh script does. The output 
file cfgtest_QtCore.out is currently created by a buildroot hook in 
python-pyqt5.mk. With sip-build, another solution seems needed because 
sip-build deletes the file instead of skipping the execution of 
cfgtest_QtCore. It then tries to execute cfgtest_QtCore which is 
compiled for the target.

I am neither a buildroot nor a python expert and do not know the proper 
way to enforce that this is done with the host compiler and the rest of 
the compilation is done for the target. If that would be fixed, then one 
could probably easily also get pyqt6 to run. So it would be good if 
someone could have a look at this, but I cannot do that soon.

Best,

Ralf

[1] https://www.riverbankcomputing.com/static/Docs/PyQt5/installation.html#building-pyqt5