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kbuild: fix 'make modules' error when CONFIG_DEBUG_INFO_BTF_MODULES=y

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When CONFIG_DEBUG_INFO_BTF_MODULES=y, running 'make modules'
in the clean kernel tree will get the following error.

  $ grep CONFIG_DEBUG_INFO_BTF_MODULES .config
  CONFIG_DEBUG_INFO_BTF_MODULES=y
  $ make -s clean
  $ make modules
    [snip]
    AR      vmlinux.a
  ar: ./built-in.a: No such file or directory
  make: *** [Makefile:1241: vmlinux.a] Error 1

'modules' depends on 'vmlinux', but builtin objects are not built.

Define KBUILD_BUILTIN.

Fixes: f73edc8951b2 ("kbuild: unify two modpost invocations")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada 2023-01-10 14:48:00 +09:00
parent 8debed3efe
commit 74d3320f6f
1 changed files with 1 additions and 0 deletions
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Makefile
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@ -1545,6 +1545,7 @@ endif
# *.ko are usually independent of vmlinux, but CONFIG_DEBUG_INFOBTF_MODULES
# is an exception.
ifdef CONFIG_DEBUG_INFO_BTF_MODULES
KBUILD_BUILTIN := 1
modules: vmlinux
endif