Re: [RFC PATCH v2 09/31] kvx: Add build infrastructure
On Fri, Jan 20, 2023 at 03:39:22PM +0100, Arnd Bergmann wrote:
On Fri, Jan 20, 2023, at 15:09, Yann Sionneau wrote:
> - Fix clean target raising an error from gcc (LIBGCC)
I had not noticed this on v1 but:
> +# Link with libgcc to get __div* builtins.
> +LIBGCC := $(shell $(CC) $(DEFAULT_OPTS) --print-libgcc-file-name)
It's better to copy the bits of libgcc that you actually need
than to include the whole thing. The kernel is in a weird
It was initialy using
KCONFIG_CFLAGS which do not contains valid options
when invoking the clean target.
I am not exactly sure what's needed by gcc for --print-libgcc-file-name,
my guess is that only the -march option matters, I will double check
internally with compiler peoples.
state that is neither freestanding nor the normal libc based
environment, so we generally want full control over what is
used. This is particularly important for 32-bit architectures
that do not want the 64-bit division, but there are probably
enough other cases as well.
Arnd