From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D04C2C433DF for ; Tue, 30 Jun 2020 15:07:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9F7FC2073E for ; Tue, 30 Jun 2020 15:07:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1593529626; bh=a1M0QNIpqtYUmezkxH+9gp6LLYOB5TX4yaPvfOkJ+OM=; h=From:To:Cc:Subject:Date:List-ID:From; b=oOA1gLP8zMXQUyJ29D9hNcdmSVygwe5SvbgozB9CaxrW0j0qJKBmMG7niZuKlsZ5V AaahvCnYBgeiqRLzTEpI/hP8bhVDKsdsq4MzPDJLbfCifp52tFveDfA8YjvCZtbd2n 74QM+v2NXjvVxEbbAjGKZ6hjhhlVHxVEkxgVynw8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731671AbgF3PHF (ORCPT ); Tue, 30 Jun 2020 11:07:05 -0400 Received: from conuserg-08.nifty.com ([210.131.2.75]:18808 "EHLO conuserg-08.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728492AbgF3PHE (ORCPT ); Tue, 30 Jun 2020 11:07:04 -0400 Received: from oscar.flets-west.jp (softbank126090202047.bbtec.net [126.90.202.47]) (authenticated) by conuserg-08.nifty.com with ESMTP id 05UF6SbT008591; Wed, 1 Jul 2020 00:06:28 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-08.nifty.com 05UF6SbT008591 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1593529589; bh=ex39KmxT7SPfAvJbb0E3RhcbX8PtVqkNn9BxsYalfbs=; h=From:To:Cc:Subject:Date:From; b=D8wEor/YWRpl7yVMid/3Yn8/6rY36fxaoit/vtG6wIyvraL8vHYgFsaCP3ypLITAL s+eDscx0ZDYGRMtoHOLmNIAqZZ3NakHeRvXfKl210521otdEbgofGLmb6yOo+agJ8k CBl8NPZv4qRGX/4F08pGemPoB1mOAw6glRXb3TpXGGP5+pN4ouEqH+CRRYCP10yNSI FUyOl96XFlXpxmkttbMtfd3GVdfvOkupL/HArRGhNFpm43oqlguD1Z89Lg3B2VbZEX utvfO2DlzORouMAuZs+ZPAlaZUqpFM91zJtsgjXvhJPHTjvE6Ex4vzYegtfrBaprrQ GHxNeefRbNK5A== X-Nifty-SrcIP: [126.90.202.47] From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Masahiro Yamada , clang-built-linux@googlegroups.com Subject: [PATCH v2 1/2] kbuild: fix CONFIG_CC_CAN_LINK(_STATIC) for cross-compilation with Clang Date: Wed, 1 Jul 2020 00:06:24 +0900 Message-Id: <20200630150625.12056-1-masahiroy@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org scripts/cc-can-link.sh tests if the compiler can link userspace programs. When $(CC) is GCC, it is checked against the target architecture because the toolchain prefix is specified as a part of $(CC). When $(CC) is Clang, it is checked against the host architecture because --target option is missing. Pass $(CLANG_FLAGS) to scripts/cc-can-link.sh to evaluate the link capability for the target architecture. Signed-off-by: Masahiro Yamada --- Changes in v2: - New patch init/Kconfig | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/init/Kconfig b/init/Kconfig index a46aa8f3174d..d0313e7725fa 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -49,13 +49,13 @@ config CLANG_VERSION config CC_CAN_LINK bool - default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(m64-flag)) if 64BIT - default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(m32-flag)) + default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m64-flag)) if 64BIT + default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) $(m32-flag)) config CC_CAN_LINK_STATIC bool - default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) -static $(m64-flag)) if 64BIT - default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) -static $(m32-flag)) + default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) -static $(m64-flag)) if 64BIT + default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(CLANG_FLAGS) -static $(m32-flag)) config CC_HAS_ASM_GOTO def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC)) -- 2.25.1