libpq-dev - GCC 12.x cannot find postgresql includes unless -I directive used

This is related to package libpq-dev on Ubuntu 22.04
https://packages.ubuntu.com/jammy/libpq-dev

In order for the compiler to auto-find the header files, it seems that the /postgresql directory in /usr/include should be relocated to /usr/include/x86_64-linux-gnu, like libcurl4-openssl-dev and libssl-dev packages do, otherwise an include directive "-I" must be given to the compiler arguments, like:

-I/usr/include/postgresql

If this include directive is not given, then compilation fails because the compiler for some reason cannot find pgsql header files. Maybe /usr/include should be enough, but I observe that other libs do install their headers in /usr/include/x86_64-linux-gnu and they can be found without any include directive passed to the compiler.