linux-kernel - [PATCH v3 2/2] sparc/build: Add SPARC target flags for compiling with clang

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Message-Id: <20241029-sparc-cflags-v3-2-b28745a6bd71@protonmail.com>
Date: Tue, 29 Oct 2024 21:49:08 +0700
From: Koakuma via B4 Relay <devnull+koachan.protonmail.com@...nel.org>
To: "David S. Miller" <davem@...emloft.net>, 
 Andreas Larsson <andreas@...sler.com>, 
 Nathan Chancellor <nathan@...nel.org>, 
 Nick Desaulniers <ndesaulniers@...gle.com>, 
 Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, 
 glaubitz@...sik.fu-berlin.de, Masahiro Yamada <masahiroy@...nel.org>, 
 Nicolas Schier <nicolas@...sle.eu>, Jonathan Corbet <corbet@....net>
Cc: sparclinux@...r.kernel.org, linux-kernel@...r.kernel.org, 
 llvm@...ts.linux.dev, linux-kbuild@...r.kernel.org, 
 linux-doc@...r.kernel.org, Koakuma <koachan@...tonmail.com>
Subject: [PATCH v3 2/2] sparc/build: Add SPARC target flags for compiling
 with clang

From: Koakuma <koachan@...tonmail.com>

clang only supports building 64-bit kernel, so we use the
sparc64-linux-gnu target.

See also: https://lore.kernel.org/lkml/e26PTXUXEz8OYXmaeKn4Mpuejr4IOlFfFwdB5vpsluXlYiqDdlyQTYcDtdAny_o4gO4SfPeQCCN2qpyT6e0nog5EaP3xk2SeUPTrF54p1gM=@protonmail.com/T/#m068e010dcf8b99d3510a90d7532bcdb70e2e2c6b

Signed-off-by: Koakuma <koachan@...tonmail.com>
---
 Documentation/kbuild/llvm.rst | 3 +++
 scripts/Makefile.clang        | 1 +
 2 files changed, 4 insertions(+)

diff --git a/Documentation/kbuild/llvm.rst b/Documentation/kbuild/llvm.rst
index 6dc66b4f31a7bb62ba5bb6174730dc0a69ee0bba..bc8a283bc44bbfa9948ad3c9fe8031269ce10be4 100644
--- a/Documentation/kbuild/llvm.rst
+++ b/Documentation/kbuild/llvm.rst
@@ -179,6 +179,9 @@ yet. Bug reports are always welcome at the issue tracker below!
    * - s390
      - Maintained
      - ``LLVM=1`` (LLVM >= 18.1.0), ``CC=clang`` (LLVM < 18.1.0)
+   * - sparc (sparc64 only)
+     - Maintained
+     - ``CC=clang LLVM_IAS=0`` (LLVM >= 20)
    * - um (User Mode)
      - Maintained
      - ``LLVM=1``
diff --git a/scripts/Makefile.clang b/scripts/Makefile.clang
index 6c23c6af797fb016232914589c948208345417ad..2435efae67f53a26d55a1c0f1bf254a49d9fc731 100644
--- a/scripts/Makefile.clang
+++ b/scripts/Makefile.clang
@@ -10,6 +10,7 @@ CLANG_TARGET_FLAGS_mips		:= mipsel-linux-gnu
 CLANG_TARGET_FLAGS_powerpc	:= powerpc64le-linux-gnu
 CLANG_TARGET_FLAGS_riscv	:= riscv64-linux-gnu
 CLANG_TARGET_FLAGS_s390		:= s390x-linux-gnu
+CLANG_TARGET_FLAGS_sparc	:= sparc64-linux-gnu
 CLANG_TARGET_FLAGS_x86		:= x86_64-linux-gnu
 CLANG_TARGET_FLAGS_um		:= $(CLANG_TARGET_FLAGS_$(SUBARCH))
 CLANG_TARGET_FLAGS		:= $(CLANG_TARGET_FLAGS_$(SRCARCH))

-- 
2.47.0