linux-kernel - [PATCH v4 2/4] Makefile: move KERNELDOC macro to the main Makefile

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Message-ID: <bb3ea3b49e76aee51dae7762db10c4d38cd67afe.1745453655.git.mchehab+huawei@kernel.org>
Date: Thu, 24 Apr 2025 08:16:22 +0800
From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To: Jonathan Corbet <corbet@....net>,
	Linux Doc Mailing List <linux-doc@...r.kernel.org>
Cc: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas.schier@...ux.dev>,
	linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v4 2/4] Makefile: move KERNELDOC macro to the main Makefile

As kernel-doc script is used not only on Documentation, but
also on scripts and drivers/drm Makefiles, move it to the
main makefile, as otherwise sub-makefiles may not have it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Tested-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 Documentation/Makefile | 1 -
 Makefile               | 5 +++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/Makefile b/Documentation/Makefile
index a006c7681412..8c1f6a3dfc44 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -60,7 +60,6 @@ endif #HAVE_LATEXMK
 # Internal variables.
 PAPEROPT_a4     = -D latex_paper_size=a4
 PAPEROPT_letter = -D latex_paper_size=letter
-KERNELDOC       = $(srctree)/scripts/kernel-doc.py
 ALLSPHINXOPTS   = -D kerneldoc_srctree=$(srctree) -D kerneldoc_bin=$(KERNELDOC)
 ALLSPHINXOPTS   += $(PAPEROPT_$(PAPER)) $(SPHINXOPTS)
 ifneq ($(wildcard $(srctree)/.config),)
diff --git a/Makefile b/Makefile
index 38689a0c3605..2a05988740a9 100644
--- a/Makefile
+++ b/Makefile
@@ -458,6 +458,11 @@ endif
 HOSTRUSTC = rustc
 HOSTPKG_CONFIG	= pkg-config
 
+# the KERNELDOC macro needs to be exported, as scripts/Makefile.build
+# has a logic to call it
+KERNELDOC       = $(srctree)/scripts/kernel-doc.py
+export KERNELDOC
+
 KBUILD_USERHOSTCFLAGS := -Wall -Wmissing-prototypes -Wstrict-prototypes \
 			 -O2 -fomit-frame-pointer -std=gnu11
 KBUILD_USERCFLAGS  := $(KBUILD_USERHOSTCFLAGS) $(USERCFLAGS)
-- 
2.49.0