add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/tools/scripts/Makefile.include
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@@ -32,15 +32,12 @@
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 EXTRA_WARNINGS += -Wold-style-definition
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 EXTRA_WARNINGS += -Wpacked
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 EXTRA_WARNINGS += -Wredundant-decls
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-EXTRA_WARNINGS += -Wshadow
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 EXTRA_WARNINGS += -Wstrict-prototypes
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 EXTRA_WARNINGS += -Wswitch-default
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 EXTRA_WARNINGS += -Wswitch-enum
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 EXTRA_WARNINGS += -Wundef
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 EXTRA_WARNINGS += -Wwrite-strings
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 EXTRA_WARNINGS += -Wformat
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-
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-CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?)
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 # Makefiles suck: This macro sets a default value of $(2) for the
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 # variable named by $(1), unless the variable has been set by
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@@ -53,12 +50,22 @@
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     $(eval $(1) = $(2)))
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 endef
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+ifneq ($(LLVM),)
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+$(call allow-override,CC,clang)
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+$(call allow-override,AR,llvm-ar)
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+$(call allow-override,LD,ld.lld)
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+$(call allow-override,CXX,clang++)
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+$(call allow-override,STRIP,llvm-strip)
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+else
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 # Allow setting various cross-compile vars or setting CROSS_COMPILE as a prefix.
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 $(call allow-override,CC,$(CROSS_COMPILE)gcc)
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 $(call allow-override,AR,$(CROSS_COMPILE)ar)
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 $(call allow-override,LD,$(CROSS_COMPILE)ld)
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 $(call allow-override,CXX,$(CROSS_COMPILE)g++)
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 $(call allow-override,STRIP,$(CROSS_COMPILE)strip)
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+endif
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+
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+CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?)
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 ifneq ($(LLVM),)
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 HOSTAR  ?= llvm-ar
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@@ -79,8 +86,16 @@
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 # will do for now and keep the above -Wstrict-aliasing=3 in place
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 # in newer systems.
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 # Needed for the __raw_cmpxchg in tools/arch/x86/include/asm/cmpxchg.h
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+#
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+# See https://lkml.org/lkml/2006/11/28/253 and https://gcc.gnu.org/gcc-4.8/changes.html,
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+# that takes into account Linus's comments (search for Wshadow) for the reasoning about
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+# -Wshadow not being interesting before gcc 4.8.
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+
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 ifneq ($(filter 3.%,$(MAKE_VERSION)),)  # make-3
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 EXTRA_WARNINGS += -fno-strict-aliasing
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+EXTRA_WARNINGS += -Wno-shadow
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+else
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+EXTRA_WARNINGS += -Wshadow
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 endif
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 ifneq ($(findstring $(MAKEFLAGS), w),w)
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@@ -109,6 +124,7 @@
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   ifneq ($(V),1)
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 	QUIET_CC       = @echo '  CC       '$@;
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 	QUIET_CC_FPIC  = @echo '  CC FPIC  '$@;
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+	QUIET_CLANG    = @echo '  CLANG    '$@;
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 	QUIET_AR       = @echo '  AR       '$@;
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 	QUIET_LINK     = @echo '  LINK     '$@;
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 	QUIET_MKDIR    = @echo '  MKDIR    '$@;