linux-kernel - [PATCH v2 1/2] initramfs: add gen_init

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Message-Id: <20251125-cpio-modules-pkg-v2-1-aa8277d89682@pengutronix.de>
Date: Tue, 25 Nov 2025 14:18:19 +0100
From: Ahmad Fatoum <a.fatoum@...gutronix.de>
To: Nathan Chancellor <nathan@...nel.org>, 
 Nicolas Schier <nicolas.schier@...ux.dev>
Cc: Simon Glass <sjg@...omium.org>, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>, 
 kernel@...gutronix.de, linux-kernel@...r.kernel.org, 
 linux-kbuild@...r.kernel.org, Ahmad Fatoum <a.fatoum@...gutronix.de>
Subject: [PATCH v2 1/2] initramfs: add gen_init_cpio to hostprogs
 unconditionally

gen_init_cpio is currently only needed when an initramfs cpio archive is
to be created out of CONFIG_INITRAMFS_SOURCE's contents. In other cases,
it's not added to hostprogs and no make target is available.

In preparation to use the host program from Makefile.package, define it
unconditionally. The program will still only be built as needed.

Signed-off-by: Ahmad Fatoum <a.fatoum@...gutronix.de>
---
 usr/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/usr/Makefile b/usr/Makefile
index f1779496bca78b4a56651b6af7221675ec7ade7a..e8f42478a0b76540180d191042cd58d3e4381f19 100644
--- a/usr/Makefile
+++ b/usr/Makefile
@@ -16,6 +16,8 @@ obj-$(CONFIG_BLK_DEV_INITRD) := initramfs_data.o
 
 $(obj)/initramfs_data.o: $(obj)/initramfs_inc_data
 
+hostprogs := gen_init_cpio
+
 ramfs-input := $(CONFIG_INITRAMFS_SOURCE)
 cpio-data :=
 
@@ -48,8 +50,6 @@ ifeq ($(cpio-data),)
 
 cpio-data := $(obj)/initramfs_data.cpio
 
-hostprogs := gen_init_cpio
-
 # .initramfs_data.cpio.d is used to identify all files included
 # in initramfs and to detect if any files are added/removed.
 # Removed files are identified by directory timestamp being updated

-- 
2.47.3