Merge tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Remove potentially incomplete targets when Kbuid is interrupted by
   SIGINT etc in case GNU Make may miss to do that when stderr is piped
   to another program.

 - Rewrite the single target build so it works more correctly.

 - Fix rpm-pkg builds with V=1.

 - List top-level subdirectories in ./Kbuild.

 - Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in
   kallsyms.

 - Avoid two different modules in lib/zstd/ having shared code, which
   potentially causes building the common code as build-in and modular
   back-and-forth.

 - Unify two modpost invocations to optimize the build process.

 - Remove head-y syntax in favor of linker scripts for placing
   particular sections in the head of vmlinux.

 - Bump the minimal GNU Make version to 3.82.

 - Clean up misc Makefiles and scripts.

* tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits)
  docs: bump minimal GNU Make version to 3.82
  ia64: simplify esi object addition in Makefile
  Revert "kbuild: Check if linker supports the -X option"
  kbuild: rebuild .vmlinux.export.o when its prerequisite is updated
  kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o
  zstd: Fixing mixed module-builtin objects
  kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols
  kallsyms: take the input file instead of reading stdin
  kallsyms: drop duplicated ignore patterns from kallsyms.c
  kbuild: reuse mksysmap output for kallsyms
  mksysmap: update comment about __crc_*
  kbuild: remove head-y syntax
  kbuild: use obj-y instead extra-y for objects placed at the head
  kbuild: hide error checker logs for V=1 builds
  kbuild: re-run modpost when it is updated
  kbuild: unify two modpost invocations
  kbuild: move vmlinux.o rule to the top Makefile
  kbuild: move .vmlinux.objs rule to Makefile.modpost
  kbuild: list sub-directories in ./Kbuild
  Makefile.compiler: replace cc-ifversion with compiler-specific macros
  ...

4 files changed, 14 insertions, 22 deletions

diff --git a/arch/m68k/68000/Makefile b/arch/m68k/68000/Makefile
index 674541fdf5b8..279560add577 100644
--- a/arch/m68k/68000/Makefile
+++ b/arch/m68k/68000/Makefile
@@ -17,4 +17,4 @@ obj-$(CONFIG_DRAGEN2)	+= dragen2.o
 obj-$(CONFIG_UCSIMM)	+= ucsimm.o
 obj-$(CONFIG_UCDIMM)	+= ucsimm.o
 
-extra-y 		:= head.o
+obj-y			+= head.o
diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile
index e358605b70ba..43e39040d3ac 100644
--- a/arch/m68k/Makefile
+++ b/arch/m68k/Makefile
@@ -86,15 +86,6 @@ ifdef CONFIG_KGDB
 KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g
 endif
 
-#
-# Select the assembler head startup code. Order is important. The default
-# head code is first, processor specific selections can override it after.
-#
-head-y				:= arch/m68k/kernel/head.o
-head-$(CONFIG_SUN3)		:= arch/m68k/kernel/sun3-head.o
-head-$(CONFIG_M68000)		:= arch/m68k/68000/head.o
-head-$(CONFIG_COLDFIRE)		:= arch/m68k/coldfire/head.o
-
 libs-y				+= arch/m68k/lib/
 
 
diff --git a/arch/m68k/coldfire/Makefile b/arch/m68k/coldfire/Makefile
index 9419a6c1f036..c56bc0dc7f2e 100644
--- a/arch/m68k/coldfire/Makefile
+++ b/arch/m68k/coldfire/Makefile
@@ -45,4 +45,4 @@ obj-$(CONFIG_STMARK2)	+= stmark2.o
 obj-$(CONFIG_PCI)	+= pci.o
 
 obj-y			+= gpio.o
-extra-y := head.o
+obj-y			+= head.o
diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile
index c0833da6a2ca..af015447dfb4 100644
--- a/arch/m68k/kernel/Makefile
+++ b/arch/m68k/kernel/Makefile
@@ -3,19 +3,20 @@
 # Makefile for the linux kernel.
 #
 
-extra-$(CONFIG_AMIGA)	:= head.o
-extra-$(CONFIG_ATARI)	:= head.o
-extra-$(CONFIG_MAC)	:= head.o
-extra-$(CONFIG_APOLLO)	:= head.o
-extra-$(CONFIG_VME)	:= head.o
-extra-$(CONFIG_HP300)	:= head.o
-extra-$(CONFIG_Q40)	:= head.o
-extra-$(CONFIG_SUN3X)	:= head.o
-extra-$(CONFIG_VIRT)	:= head.o
-extra-$(CONFIG_SUN3)	:= sun3-head.o
 extra-y			+= vmlinux.lds
 
-obj-y	:= entry.o irq.o module.o process.o ptrace.o
+obj-$(CONFIG_AMIGA)	:= head.o
+obj-$(CONFIG_ATARI)	:= head.o
+obj-$(CONFIG_MAC)	:= head.o
+obj-$(CONFIG_APOLLO)	:= head.o
+obj-$(CONFIG_VME)	:= head.o
+obj-$(CONFIG_HP300)	:= head.o
+obj-$(CONFIG_Q40)	:= head.o
+obj-$(CONFIG_SUN3X)	:= head.o
+obj-$(CONFIG_VIRT)	:= head.o
+obj-$(CONFIG_SUN3)	:= sun3-head.o
+
+obj-y	+= entry.o irq.o module.o process.o ptrace.o
 obj-y	+= setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
 
 obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o