Compile errors with gcc-10 and python3.9 develop headers

[mgerhardy]

this time i'm getting compile errors with the python 3.9 dev package installed.

/home/mgerhardy/dev/ImHex/source/helpers/loader_script_handler.cpp: In static member function ‘static bool hex::LoaderScript::processFile(std::string_view)’:
/home/mgerhardy/dev/ImHex/source/helpers/loader_script_handler.cpp:151:43: error: ‘__argv’ was not declared in this scope
  151 |         Py_SetProgramName(Py_DecodeLocale(__argv[0], nullptr));
      |                                           ^~~~~~
[ 55%] Building CXX object CMakeFiles/ImHex.dir/source/views/view_help.cpp.o
make[2]: *** [CMakeFiles/ImHex.dir/build.make:173: CMakeFiles/ImHex.dir/source/helpers/loader_script_handler.cpp.o] Fehler 1
make[2]: *** Es wird auf noch nicht beendete Prozesse gewartet....
make[1]: *** [CMakeFiles/Makefile2:96: CMakeFiles/ImHex.dir/all] Fehler 2
make: *** [Makefile:103: all] Fehler 2

[WerWolv]

Hi. Please don't spam the issue tracker with multiple, identical problems.
I'm in the middle of implementing these features, you can't expect everything to already be finished and working when you try to clone and build master.
I'll add a check for the right python version to cmake. For libmagic, there is no cmake integration with it so checking is somewhat hard there.
For the mean time, please stick to v1.4.0