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Message-Id: <20250407-kunit-kselftests-v2-2-454114e287fd@linutronix.de>
Date: Mon, 07 Apr 2025 09:42:39 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Masahiro Yamada <masahiroy@...nel.org>,
Nathan Chancellor <nathan@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>, Willy Tarreau <w@....eu>,
Thomas Weißschuh <linux@...ssschuh.net>,
Brendan Higgins <brendan.higgins@...ux.dev>,
David Gow <davidgow@...gle.com>, Rae Moar <rmoar@...gle.com>,
Shuah Khan <shuah@...nel.org>, Jonathan Corbet <corbet@....net>,
Nicolas Schier <nicolas.schier@...ux.dev>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>,
linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org, kunit-dev@...glegroups.com,
linux-doc@...r.kernel.org,
Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH v2 02/11] kbuild: introduce CONFIG_ARCH_HAS_NOLIBC
Nolibc does not support all architectures.
Add a kconfig option, so users can know where it is available.
The new option is maintained inside tools/include/nolibc/ as only that
directory is responsible for nolibc's availability.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
init/Kconfig | 2 ++
tools/include/nolibc/Kconfig.nolibc | 13 +++++++++++++
2 files changed, 15 insertions(+)
diff --git a/init/Kconfig b/init/Kconfig
index dd2ea3b9a799205daa4c1f0c694a9027e344c690..661079a71f30d8d7894d51726686801f8a25b50b 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -92,6 +92,8 @@ config CC_CAN_LINK_STATIC
default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAGS) $(m64-flag) -static) if 64BIT
default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(USERCFLAGS) $(USERLDFLAGS) $(m32-flag) -static)
+source "tools/include/nolibc/Kconfig.nolibc"
+
# Fixed in GCC 14, 13.3, 12.4 and 11.5
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113921
config GCC_ASM_GOTO_OUTPUT_BROKEN
diff --git a/tools/include/nolibc/Kconfig.nolibc b/tools/include/nolibc/Kconfig.nolibc
new file mode 100644
index 0000000000000000000000000000000000000000..60408f02d0da3275c70f550b98a9e60c1558238f
--- /dev/null
+++ b/tools/include/nolibc/Kconfig.nolibc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+
+config ARCH_HAS_NOLIBC
+ bool
+ default y if X86
+ default y if ARM
+ default y if ARM64
+ default y if PPC
+ default y if MIPS
+ default y if LOONGARCH
+ default y if RISCV
+ default y if S390
+ default y if UML_X86
--
2.49.0
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