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s390: Add -m64 to KBUILD_CPPFLAGS

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Some non-code files, like linkescripts, are preprocessed with the C
preprocessor and make use of regular kernel headers.
As -m64 is not passed to those preprocessor invocations this leads
to an inconsistency between __BITS_PER_LONG and the C type 'long'.
An upcoming consistency check will be tripped by this.

Make sure -m64 is also defined for those preprocessing steps.

As KBUILD_CPPFLAGS is inherited by both KBUILD_AFLAGS and KBUILD_CFLAGS,
drop -m64 from these variables.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260302-vdso-compat-checkflags-v2-3-78e55baa58ba@linutronix.de
This commit is contained in:
Thomas Weißschuh
2026-03-02 08:58:39 +01:00
committed by Thomas Gleixner
parent 273aaa8ef8
commit 08b5dcb613
1 changed files with 1 additions and 2 deletions
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3
arch/s390/Makefile
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@@ -12,8 +12,7 @@ LD_BFD := elf64-s390
KBUILD_LDFLAGS := -m elf64_s390
KBUILD_AFLAGS_MODULE += -fPIC
KBUILD_CFLAGS_MODULE += -fPIC
KBUILD_AFLAGS += -m64
KBUILD_CFLAGS += -m64
KBUILD_CPPFLAGS += -m64
KBUILD_CFLAGS += -fPIC
LDFLAGS_vmlinux := $(call ld-option,-no-pie)
extra_tools := relocs