Merge tag 'kbuild-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...

Pull Kbuild updates from Masahiro Yamada:

 - fix warnings in 'make clean' for ARCH=um, hexagon, h8300, unicore32

 - ensure to rebuild all objects when the compiler is upgraded

 - exclude system headers from dependency tracking and fixdep processing

 - fix potential bit-size mismatch between the kernel and BPF user-mode
   helper

 - add the new syntax 'userprogs' to build user-space programs for the
   target architecture (the same arch as the kernel)

 - compile user-space sample code under samples/ for the target arch
   instead of the host arch

 - make headers_install fail if a CONFIG option is leaked to user-space

 - sanitize the output format of scripts/checkstack.pl

 - handle ARM 'push' instruction in scripts/checkstack.pl

 - error out before modpost if a module name conflict is found

 - error out when multiple directories are passed to M= because this
   feature is broken for a long time

 - add CONFIG_DEBUG_INFO_COMPRESSED to support compressed debug info

 - a lot of cleanups of modpost

 - dump vmlinux symbols out into vmlinux.symvers, and reuse it in the
   second pass of modpost

 - do not run the second pass of modpost if nothing in modules is
   updated

 - install modules.builtin(.modinfo) by 'make install' as well as by
   'make modules_install' because it is useful even when
   CONFIG_MODULES=n

 - add new command line variables, GZIP, BZIP2, LZOP, LZMA, LZ4, and XZ
   to allow users to use alternatives such as pigz, pbzip2, etc.

* tag 'kbuild-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (96 commits)
  kbuild: add variables for compression tools
  Makefile: install modules.builtin even if CONFIG_MODULES=n
  mksysmap: Fix the mismatch of '.L' symbols in System.map
  kbuild: doc: rename LDFLAGS to KBUILD_LDFLAGS
  modpost: change elf_info->size to size_t
  modpost: remove is_vmlinux() helper
  modpost: strip .o from modname before calling new_module()
  modpost: set have_vmlinux in new_module()
  modpost: remove mod->skip struct member
  modpost: add mod->is_vmlinux struct member
  modpost: remove is_vmlinux() call in check_for_{gpl_usage,unused}()
  modpost: remove mod->is_dot_o struct member
  modpost: move -d option in scripts/Makefile.modpost
  modpost: remove -s option
  modpost: remove get_next_text() and make {grab,release_}file static
  modpost: use read_text_file() and get_line() for reading text files
  modpost: avoid false-positive file open error
  modpost: fix potential mmap'ed file overrun in get_src_version()
  modpost: add read_text_file() and get_line() helpers
  modpost: do not call get_modinfo() for vmlinux(.o)
  ...

diff --cc Makefile
Simple merge

diff --cc arch/arm/Makefile
Simple merge

diff --cc arch/arm64/Makefile
Simple merge

diff --cc arch/parisc/Makefile
Simple merge

diff --cc init/Kconfig
index b5294bcba61d341dbe86f0b07f225de39b53271c,fb8ab85de7f85028ddeeea49f577d089d70cd01b..58a4b705c1c2677f1b93905b3271734402ec7342
--- 1/init/Kconfig
--- 2/init/Kconfig
+++ b/init/Kconfig
@@@ -21,11 -38,8 +38,11 @@@ config LD_VERSIO
        default $(shell,$(LD) --version | $(srctree)/scripts/ld-version.sh)
  
  config CC_IS_CLANG
-       def_bool $(success,$(CC) --version | head -n 1 | grep -q clang)
+       def_bool $(success,echo "$(CC_VERSION_TEXT)" | grep -q clang)
  
 +config LD_IS_LLD
 +      def_bool $(success,$(LD) -v | head -n 1 | grep -q LLD)
 +
  config CLANG_VERSION
        int
        default $(shell,$(srctree)/scripts/clang-version.sh $(CC))

diff --cc lib/Kconfig.debug
Simple merge

diff --cc samples/Kconfig
Simple merge

diff --cc scripts/link-vmlinux.sh
Simple merge

diff --cc scripts/mod/modpost.c
Simple merge