linux-kernel - [PATCH 08/12] selftests/nolibc: setup objtree without Makefile.include

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Message-Id: <20240728-nolibc-llvm-v1-8-bc384269bc35@weissschuh.net>
Date: Sun, 28 Jul 2024 12:10:02 +0200
From: Thomas Weißschuh <linux@...ssschuh.net>
To: Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 08/12] selftests/nolibc: setup objtree without
 Makefile.include

Makefile.include has multiple uses. In addition to the setup of various
variables based on "O=", for which it is used currently, it can also set
up variables based on "LLVM=".
Unfortunately using it for both at the same time would require a big
ugly reshuffling of the nolibc Makefile.
As we want to use its llvm handling in the future, reimplement its
objtree := $(O).

While at it, also move "$(objtree) ?= $(srctree)" for consistency.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 tools/testing/selftests/nolibc/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/nolibc/Makefile b/tools/testing/selftests/nolibc/Makefile
index 803a4e1bbe24..8000bc3c408b 100644
--- a/tools/testing/selftests/nolibc/Makefile
+++ b/tools/testing/selftests/nolibc/Makefile
@@ -5,7 +5,6 @@ ifeq ($(srctree),)
 srctree := $(patsubst %/tools/testing/selftests/,%,$(dir $(CURDIR)))
 endif
 
-include $(srctree)/tools/scripts/Makefile.include
 include $(srctree)/tools/scripts/utilities.mak
 # We need this for the "cc-option" macro.
 include $(srctree)/tools/build/Build.include
@@ -14,6 +13,9 @@ ifneq ($(O),)
 ifneq ($(call is-absolute,$(O)),y)
 $(error Only absolute O= parameters are supported)
 endif
+objtree := $(O)
+else
+objtree ?= $(srctree)
 endif
 
 ifeq ($(ARCH),)
@@ -21,8 +23,6 @@ include $(srctree)/scripts/subarch.include
 ARCH = $(SUBARCH)
 endif
 
-objtree ?= $(srctree)
-
 # XARCH extends the kernel's ARCH with a few variants of the same
 # architecture that only differ by the configuration, the toolchain
 # and the Qemu program used. It is copied as-is into ARCH except for

-- 
2.45.2