linux-kernel - [PATCH v2 0/2] tools/build: Fix s390(x) cross-compilation with clang

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Message-Id: <20250620-tools-cross-s390-v2-0-ecda886e00e5@linutronix.de>
Date: Fri, 20 Jun 2025 13:00:26 +0200
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Nathan Chancellor <nathan@...nel.org>, 
 Nick Desaulniers <nick.desaulniers+lkml@...il.com>, 
 Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>, 
 Andrii Nakryiko <andrii@...nel.org>, Quentin Monnet <qmo@...nel.org>, 
 Jean-Philippe Brucker <jean-philippe@...aro.org>, Willy Tarreau <w@....eu>, 
 Thomas Weißschuh <linux@...ssschuh.net>
Cc: linux-kernel@...r.kernel.org, llvm@...ts.linux.dev, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH v2 0/2] tools/build: Fix s390(x) cross-compilation with
 clang

The heuristic to derive a clang target triple from a GCC one does not work
for s390. GCC uses "s390-linux" while clang expects "s390x-linux" or
"powerz-linux".

There doesn't seem to be a formal maintainer for this file.
Maybe the clang/llvm maintainers can pick it up.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
Changes in v2:
- Rebase onto mainline master
- Drop custom nolibc workaround
- Link to v1: https://lore.kernel.org/r/20250424-tools-cross-s390-v1-1-d3ec4b43df12@linutronix.de

---
Thomas Weißschuh (2):
      tools/build: Fix s390(x) cross-compilation with clang
      tools/nolibc: drop s390 clang target override

 tools/include/nolibc/Makefile  | 3 ---
 tools/scripts/Makefile.include | 4 +++-
 2 files changed, 3 insertions(+), 4 deletions(-)
---
base-commit: 75f5f23f8787c5e184fcb2fbcd02d8e9317dc5e7
change-id: 20250424-tools-cross-s390-73eaa2d42833

Best regards,
-- 
Thomas Weißschuh <thomas.weissschuh@...utronix.de>