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| author | Masahiro Yamada <masahiroy@kernel.org> | 2024-07-04 22:47:55 +0900 |
|---|---|---|
| committer | Masahiro Yamada <masahiroy@kernel.org> | 2024-07-16 16:07:14 +0900 |
| commit | 5f99665ee8f4335f334a5292b6d5b41a577fc2c0 (patch) | |
| tree | a1be6d06311b6ffc5ab7a3f42c1bd436bf9701b0 /Makefile | |
| parent | 712aba5543b88996bc4682086471076fbf048927 (diff) | |
| download | linux-5f99665ee8f4335f334a5292b6d5b41a577fc2c0.tar.gz linux-5f99665ee8f4335f334a5292b6d5b41a577fc2c0.tar.bz2 linux-5f99665ee8f4335f334a5292b6d5b41a577fc2c0.zip | |
kbuild: raise the minimum GNU Make requirement to 4.0
RHEL/CentOS 7, popular distributions that install GNU Make 3.82, reached
EOM/EOL on June 30, 2024. While you may get extended support, it is a
good time to raise the minimum GNU Make version.
The new requirement, GNU Make 4.0, was released in October, 2013.
I did not touch the Makefiles under tools/ because I do not know the
requirements for building tools. I do not find any GNU Make version
checks under tools/.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 22 |
1 files changed, 3 insertions, 19 deletions
@@ -11,8 +11,8 @@ NAME = Baby Opossum Posse # Comments in this file are targeted only to the developer, do not # expect to learn how to build the kernel reading this file. -ifeq ($(filter undefine,$(.FEATURES)),) -$(error GNU Make >= 3.82 is required. Your Make version is $(MAKE_VERSION)) +ifeq ($(filter output-sync,$(.FEATURES)),) +$(error GNU Make >= 4.0 is required. Your Make version is $(MAKE_VERSION)) endif $(if $(filter __%, $(MAKECMDGOALS)), \ @@ -93,15 +93,7 @@ endif # If the user is running make -s (silent mode), suppress echoing of # commands -# make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS. - -ifeq ($(filter 3.%,$(MAKE_VERSION)),) -short-opts := $(firstword -$(MAKEFLAGS)) -else -short-opts := $(filter-out --%,$(MAKEFLAGS)) -endif - -ifneq ($(findstring s,$(short-opts)),) +ifneq ($(findstring s,$(firstword -$(MAKEFLAGS))),) quiet=silent_ override KBUILD_VERBOSE := endif @@ -201,14 +193,6 @@ ifneq ($(words $(subst :, ,$(abs_srctree))), 1) $(error source directory cannot contain spaces or colons) endif -ifneq ($(filter 3.%,$(MAKE_VERSION)),) -# 'MAKEFLAGS += -rR' does not immediately become effective for GNU Make 3.x -# We need to invoke sub-make to avoid implicit rules in the top Makefile. -need-sub-make := 1 -# Cancel implicit rules for this Makefile. -$(this-makefile): ; -endif - export sub_make_done := 1 endif # sub_make_done |