PIC mode on Ubuntu

[adamvm]

Hi during compilation trial I had to modify Makefile due to an error:

$ make
cc -c -o cppmod.o -mcmodel=kernel -fpermissive -fno-builtin -fno-exceptions -fno-rtti -nostdinc cppmod.cpp
cc1plus: error: code model kernel does not support PIC mode
make: *** [Makefile:12: cppmod.o] Błąd 1

the solution is to extend commandline with -fno-pie

anyway I have problem with compilation:

$ make
cc -c -o cppmod.o -mcmodel=kernel -fpermissive -fno-builtin -fno-exceptions -fno-rtti -nostdinc -fno-pie cppmod.cpp
In file included from cppmod.cpp:4:
new.h:4:14: warning: ‘operator new’ takes type ‘size_t’ (‘long unsigned int’) as first parameter [-fpermissive]
4 | inline void *operator new(size_t s) {
| ^~~~~~~~
make -C /lib/modules/5.13.0-22-generic/build M=/home/adi/dev/linux-kernel-driver-cpp modules
make[1]: Wejście do katalogu '/usr/src/linux-headers-5.13.0-22-generic'
CC [M] /home/adi/dev/linux-kernel-driver-cpp/interface.o
CC [M] /home/adi/dev/linux-kernel-driver-cpp/kernel_api.o
LD [M] /home/adi/dev/linux-kernel-driver-cpp/mydrv.o
MODPOST /home/adi/dev/linux-kernel-driver-cpp/Module.symvers
/home/adi/dev/linux-kernel-driver-cpp/.cppmod.o.cmd: No such file or directory
make[2]: *** [scripts/Makefile.modpost:150: /home/adi/dev/linux-kernel-driver-cpp/Module.symvers] Błąd 1
make[1]: *** [Makefile:1794: modules] Błąd 2
make[1]: Opuszczenie katalogu '/usr/src/linux-headers-5.13.0-22-generic'
make: *** [Makefile:8: module] Błąd 2

but I think is not connected with disabling PIE, I have only Ubuntu machines so no chance to check on other one