linux-kernel - [PATCH 1/4] kbuild: merge scripts/mkmakefile to top Makefile

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Message-Id: <20210517070314.1428091-1-masahiroy@kernel.org>
Date:   Mon, 17 May 2021 16:03:11 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Arnd Bergmann <arnd@...db.de>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/4] kbuild: merge scripts/mkmakefile to top Makefile

scripts/mkmakefile is simple enough to be merged in the Makefile.

Use $(call cmd,...) to show the log instead of doing it in the
shell script.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 Makefile           | 15 ++++++++++++---
 scripts/mkmakefile | 17 -----------------
 2 files changed, 12 insertions(+), 20 deletions(-)
 delete mode 100755 scripts/mkmakefile

diff --git a/Makefile b/Makefile
index 15b6476d0f89..50776cc3e894 100644
--- a/Makefile
+++ b/Makefile
@@ -544,14 +544,24 @@ scripts_basic:
 	$(Q)rm -f .tmp_quiet_recordmcount
 
 PHONY += outputmakefile
+ifdef building_out_of_srctree
 # Before starting out-of-tree build, make sure the source tree is clean.
 # outputmakefile generates a Makefile in the output directory, if using a
 # separate output directory. This allows convenient use of make in the
 # output directory.
 # At the same time when output Makefile generated, generate .gitignore to
 # ignore whole output directory
-outputmakefile:
-ifdef building_out_of_srctree
+
+quiet_cmd_makefile = GEN     $@
+      cmd_makefile = { \
+	echo "\# Automatically generated by $(srctree)/Makefile: don't edit"; \
+	echo "include $(srctree)/Makefile"; \
+	} > $@
+
+Makefile: FORCE
+	$(call cmd,makefile)
+
+outputmakefile: Makefile
 	$(Q)if [ -f $(srctree)/.config -o \
 		 -d $(srctree)/include/config -o \
 		 -d $(srctree)/arch/$(SRCARCH)/include/generated ]; then \
@@ -562,7 +572,6 @@ ifdef building_out_of_srctree
 		false; \
 	fi
 	$(Q)ln -fsn $(srctree) source
-	$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile $(srctree)
 	$(Q)test -e .gitignore || \
 	{ echo "# this is build directory, ignore it"; echo "*"; } > .gitignore
 endif
diff --git a/scripts/mkmakefile b/scripts/mkmakefile
deleted file mode 100755
index 1cb174751429..000000000000
--- a/scripts/mkmakefile
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/bin/sh
-# SPDX-License-Identifier: GPL-2.0
-# Generates a small Makefile used in the root of the output
-# directory, to allow make to be started from there.
-# The Makefile also allow for more convinient build of external modules
-
-# Usage
-# $1 - Kernel src directory
-
-if [ "${quiet}" != "silent_" ]; then
-	echo "  GEN     Makefile"
-fi
-
-cat << EOF > Makefile
-# Automatically generated by $0: don't edit
-include $1/Makefile
-EOF
-- 
2.27.0