Failed to recompile dependent libraries

#1

Hi,
I tried to recompile dependent libraries, as shown here: ROCK Pi 4 > Develoment > Comple a kernel module on ROCK Pi 4, but it fails with an error:

CC scripts/mod/empty.o
gcc: error: unrecognized command line option ‘-mgeneral-regs-only’
scripts/Makefile.build:277: recipe for target ‘scripts/mod/empty.o’ failed
make[2]: *** [scripts/mod/empty.o] Error 1
scripts/Makefile.build:484: recipe for target ‘scripts/mod’ failed
make[1]: *** [scripts/mod] Error 2
Makefile:584: recipe for target ‘scripts’ failed
make: *** [scripts] Error 2

Any idea what could still be missing in the preparation in order to succeed? I am directly working on the ROCK Pi 4 and not trying to cross-compile.
Thanks a lot!

#2

Then you will need to waste time and adjust sources to match the compiler which comes with a distribution. If you don’t know how to do that, go and CC.

#3

From your suggestion I conclude that the How-To (https://wiki.radxa.com/Rockpi4/dev/compile-a-kernel-module-on-rockpi4) is not correct? For me, the statement at the beginning on that page says that the compilation of the module is done on the ROCK Pi itself… no?

#4

It is correct. Just sometimes it will not work without adjusting sources or changing compiler.