Re: [PATCH v3] kbuild: Show marked Kconfig fragments in "help"

Kees Cook [off-list ref] writes:

Currently the Kconfig fragments in kernel/configs and arch/*/configs
that aren't used internally aren't discoverable through "make help",
which consists of hard-coded lists of config fragments. Instead, list
all the fragment targets that have a "# Help: " comment prefix so the
targets can be generated dynamically.

Add logic to the Makefile to search for and display the fragment and
comment. Add comments to fragments that are intended to be direct targets.

Cc: Nicolas Schier <redacted>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Christophe Leroy <redacted>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-kernel@vger.kernel.org
Cc: x86@kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-s390@vger.kernel.org
Cc: linux-kbuild@vger.kernel.org
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <redacted>
Co-developed-by: Masahiro Yamada <masahiroy@kernel.org>
---
v3:
- Use Makefile logic from Masahiro Yamada
- Use "# Help: " prefix, but only on desired fragment targets
v2: https://lore.kernel.org/all/20230825194329.gonna.911-kees@kernel.org (local)
v1: https://lore.kernel.org/all/20230824223606.never.762-kees@kernel.org (local)
---
 Makefile                                   |  1 -
 arch/arm/configs/dram_0x00000000.config    |  1 +
 arch/arm/configs/dram_0xc0000000.config    |  1 +
 arch/arm/configs/dram_0xd0000000.config    |  1 +
 arch/arm/configs/lpae.config               |  1 +
 arch/arm64/configs/virt.config             |  1 +
 arch/powerpc/configs/disable-werror.config |  1 +
 arch/powerpc/configs/security.config       |  4 +++-

  
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)

cheers