From: Prarit Bhargava <prarit@xxxxxxxxxx>
makefile: Add -Werror support for RHEL
The -Werror flag should be enabled for RHEL. In ARK, however, it is a bit
tricky to enable -Werror as a build bug occasionally leaks through
upstream review and into Linus' tree. As a consequence, CONFIG_WERROR
cannot be enabled in ARK but the code to add the flag for RHEL commpiles
can be added to the top-level makefile.
This code could be placed in the top-level Makefile, around the -Werror
line added by Linus in 3fe617ccafd6 ("Enable '-Werror' by default for all
kernel builds"), but given the amount of RHEL Only code here it is best to
keep it separated in our top-level makefile.
Signed-off-by: Prarit Bhargava <prarit@xxxxxxxxxx>
diff --git a/makefile b/makefile
index blahblah..blahblah 100644
--- a/makefile
+++ b/makefile
@@ -14,3 +14,10 @@ dist-%::
distg-%::
$(MAKE) -C redhat $(@) $(_EXTRA_ARGS)
+ifeq (,$(filter $(ARCH), x86 x86_64 powerpc s390 aarch64))
+ ifneq ($(KBUILD_EXTMOD),)
+ # always strip out error flags for external modules
+ KBUILD_CPPFLAGS := $(filter-out -Werror,$(KBUILD_CPPFLAGS))
+ KBUILD_RUSTFLAGS := $(filter-out -Dwarnings,$(KBUILD_RUSTFLAGS))
+ endif
+endif
--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2240
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