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From:   =?utf-8?q?Thomas_Wei=C3=9Fschuh?= <linux@weissschuh.net>
Date:   Sat, 16 Sep 2023 09:13:27 +0200
Subject: [PATCH RFC 1/3] kbuild: add toplevel target for usr/gen_init_cpio
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Message-Id: <20230916-nolibc-initramfs-v1-1-4416ecedca6d@weissschuh.net>
References: <20230916-nolibc-initramfs-v1-0-4416ecedca6d@weissschuh.net>
In-Reply-To: <20230916-nolibc-initramfs-v1-0-4416ecedca6d@weissschuh.net>
To:     Masahiro Yamada <masahiroy@kernel.org>,
        Nathan Chancellor <nathan@kernel.org>,
        Nick Desaulniers <ndesaulniers@google.com>,
        Nicolas Schier <nicolas@fjasle.eu>, Willy Tarreau <w@1wt.eu>,
        Shuah Khan <shuah@kernel.org>
Cc:     linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-kselftest@vger.kernel.org,
        =?utf-8?q?Thomas_Wei=C3=9Fschuh?= <linux@weissschuh.net>
Precedence: bulk

The nolibc testsuite wants to generate an initrams without linking it
into the kernel for which it needs access to gen_init_cpio.
Add a new toplevel target for it so it can be built standalone.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>

---

Kbuild maintainers:

If there is a way that does not require modification of the toplevel
Makefile that would be nice, too.
I followed the example of the "scripts_unifdef" target.
---
 Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Makefile b/Makefile
index ceb23eed4dce..1caa4429eceb 100644
--- a/Makefile
+++ b/Makefile
@@ -1812,6 +1812,10 @@ endif
 
 endif # KBUILD_EXTMOD
 
+PHONY += usr_gen_init_cpio
+usr_gen_init_cpio:
+	$(Q)$(MAKE) $(build)=usr usr/gen_init_cpio
+
 # ---------------------------------------------------------------------------
 # Modules
 

-- 
2.42.0