Messages in this thread Patch in this message |  | | From | Masahiro Yamada <> | Subject | [PATCH] kbuild: ensure Make >= 3.82 is used | Date | Sun, 11 Dec 2022 12:03:52 +0900 |
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Documentation/process/changes.rst notes the minimal GNU Make version, but it is not checked anywhere.
We could check $(MAKE_VERSION), but another simple way is to check $(.FEATURES) since the feature list always grows although this way is not always possible. For example Make 4.0 through 4.2 have the same set of $(.FEATURES).
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> ---
Changes in v3: - Check the version in a different way
Makefile | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/Makefile b/Makefile index 2dda1e9a717a..66dfc5751470 100644 --- a/Makefile +++ b/Makefile @@ -11,6 +11,11 @@ NAME = Hurr durr I'ma ninja sloth # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. +# Ensure Make >= 3.82 +ifeq ($(filter undefine,$(.FEATURES)),) +$(error Make $(MAKE_VERSION) is too old) +endif + $(if $(filter __%, $(MAKECMDGOALS)), \ $(error targets prefixed with '__' are only for internal use)) -- 2.34.1
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