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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 753CFC433F5 for ; Mon, 21 Mar 2022 17:33:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349040AbiCURfA (ORCPT ); Mon, 21 Mar 2022 13:35:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348477AbiCURe5 (ORCPT ); Mon, 21 Mar 2022 13:34:57 -0400 Received: from 1wt.eu (wtarreau.pck.nerim.net [62.212.114.60]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id C1F9566628 for ; Mon, 21 Mar 2022 10:33:30 -0700 (PDT) Received: (from willy@localhost) by pcw.home.local (8.15.2/8.15.2/Submit) id 22LHXOSO007576; Mon, 21 Mar 2022 18:33:24 +0100 From: Willy Tarreau To: "Paul E . McKenney" Cc: linux-kernel@vger.kernel.org, Ammar Faizi Subject: [PATCH 7/8] tools/nolibc: add a makefile to install headers Date: Mon, 21 Mar 2022 18:33:13 +0100 Message-Id: <20220321173314.7519-8-w@1wt.eu> X-Mailer: git-send-email 2.17.5 In-Reply-To: <20220321173314.7519-1-w@1wt.eu> References: <20220321173314.7519-1-w@1wt.eu> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This provides a target "headers_standalone" which installs the nolibc's arch-specific headers with "arch.h" taken from the current arch (or a concatenation of both i386 and x86_64 for arch=x86), then installs kernel headers. This creates a convenient sysroot which is directly usable by a bare-metal compiler to create any executable. Signed-off-by: Willy Tarreau --- tools/include/nolibc/Makefile | 43 +++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 tools/include/nolibc/Makefile diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile new file mode 100644 index 000000000000..7d4d61b08637 --- /dev/null +++ b/tools/include/nolibc/Makefile @@ -0,0 +1,43 @@ +# SPDX-License-Identifier: GPL-2.0 +# Makefile for nolibc installation and tests +include ../../scripts/Makefile.include + +# we're in ".../tools/include/nolibc" +ifeq ($(srctree),) +srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR))) +endif + +nolibc_arch := $(patsubst arm64,aarch64,$(ARCH)) +arch_file := arch-$(nolibc_arch).h +all_files := ctype.h errno.h nolibc.h signal.h std.h stdio.h stdlib.h string.h \ + sys.h time.h types.h unistd.h + +# install all headers needed to support a bare-metal compiler +all: + +# Note: when ARCH is "x86" we concatenate both x86_64 and i386 +headers: + $(Q)mkdir -p $(OUTPUT)sysroot + $(Q)mkdir -p $(OUTPUT)sysroot/include + $(Q)cp $(all_files) $(OUTPUT)sysroot/include/ + $(Q)if [ "$(ARCH)" = "x86" ]; then \ + sed -e \ + 's,^#ifndef _NOLIBC_ARCH_X86_64_H,#if !defined(_NOLIBC_ARCH_X86_64_H) \&\& defined(__x86_64__),' \ + arch-x86_64.h; \ + sed -e \ + 's,^#ifndef _NOLIBC_ARCH_I386_H,#if !defined(_NOLIBC_ARCH_I386_H) \&\& !defined(__x86_64__),' \ + arch-i386.h; \ + elif [ -e "$(arch_file)" ]; then \ + cat $(arch_file); \ + else \ + echo "Fatal: architecture $(ARCH) not yet supported by nolibc." >&2; \ + exit 1; \ + fi > $(OUTPUT)sysroot/include/arch.h + +headers_standalone: headers + $(Q)$(MAKE) -C $(srctree) headers + $(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)/sysroot + +clean: + $(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot" + -- 2.35.1