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=-4.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 0DBB7C83006 for ; Wed, 29 Apr 2020 03:46:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D9A9820757 for ; Wed, 29 Apr 2020 03:46:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588132001; bh=c7TXDTZaNsIRFu96XEXWaMseVYXQJ5tQ9GRd/XGIa5Q=; h=From:To:Cc:Subject:Date:List-ID:From; b=wXvUOCL0IBB5i3UerTXrE1bFscmmqrrhot2MQtv1OV5Q50rLR4iEeNf1rKuLimiFC Luod39/QSROLVm8UecKCYZkvPKVYr41Et2kaKxGnIUiK1nZgUgyAer4Vk6/PMKNG1A b1eeYE5CaLuWgt0HZIyXRtRMtpDTVsqG9O5XQaY4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726817AbgD2Dqk (ORCPT ); Tue, 28 Apr 2020 23:46:40 -0400 Received: from conuserg-12.nifty.com ([210.131.2.79]:30768 "EHLO conuserg-12.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726621AbgD2Dq3 (ORCPT ); Tue, 28 Apr 2020 23:46:29 -0400 Received: from oscar.flets-west.jp (softbank126090202047.bbtec.net [126.90.202.47]) (authenticated) by conuserg-12.nifty.com with ESMTP id 03T3jXlb020748; Wed, 29 Apr 2020 12:45:34 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-12.nifty.com 03T3jXlb020748 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1588131934; bh=J6Zz8rPIoOP2RxWt1vp9BH2krOQ6QyL5foLOOnRDXGA=; h=From:To:Cc:Subject:Date:From; b=pbkwY9WIC8+qobyGRxbFLVTBQ7BdgZozw2VehlZt7+zw8M8UXRU5aKB1CbWy/m3K+ MueYuxb7MeDn8sfuFahj87Q1AMOOVEYvEyID7nMy9LSeX8vUUR5hOzdEAzzKnr1uhr Va0ZMDmxia4Vkz+1qgdJezKuKUvi//YRkyOq9+law7mDS06wBUwZq8wlORrwaQK7jw gwhn2EKot/y7cufNgyJWnrpsqWacaw1GtPiuoKbbIbnaHoQWKRfxiMNt4YO2ruJoZo Url7EVqPdTiP/ineyFRQlkmQknf6ldkBl2oQUEiYYY5z31WNziwF2KUBScHxEgsfBC du447ALrsma5w== X-Nifty-SrcIP: [126.90.202.47] From: Masahiro Yamada To: linux-kbuild@vger.kernel.org Cc: bpf , Arnd Bergmann , Sam Ravnborg , linux-kernel@vger.kernel.org, Masahiro Yamada Subject: [PATCH v2 00/15] kbuild: support 'userprogs' syntax Date: Wed, 29 Apr 2020 12:45:12 +0900 Message-Id: <20200429034527.590520-1-masahiroy@kernel.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Several Makefiles use 'hostprogs' to build programs for the host architecture where it is not appropriate to do so. This is just because Kbuild lacks the support for building programs for the target architecture. This series introduce 'userprogs' syntax and use it from sample and bpf Makefiles. Sam worked on this in 2014. https://lkml.org/lkml/2014/7/13/154 He used 'uapiprogs-y' but I just thought the meaning of "UAPI programs" is unclear. Naming the syntax is one of the most difficult parts. I chose 'userprogs'. Anothor choice I had in my mind was 'targetprogs'. You can test this series quickly by 'make allmodconfig samples/' When building objects for userspace, [U] is displayed. masahiro@oscar:~/workspace/linux$ make allmodconfig samples/ [snip] AR samples/vfio-mdev/built-in.a CC [M] samples/vfio-mdev/mtty.o CC [M] samples/vfio-mdev/mdpy.o CC [M] samples/vfio-mdev/mdpy-fb.o CC [M] samples/vfio-mdev/mbochs.o AR samples/mei/built-in.a CC [U] samples/mei/mei-amt-version CC [U] samples/auxdisplay/cfag12864b-example CC [M] samples/configfs/configfs_sample.o CC [M] samples/connector/cn_test.o CC [U] samples/connector/ucon CC [M] samples/ftrace/ftrace-direct.o CC [M] samples/ftrace/ftrace-direct-too.o CC [M] samples/ftrace/ftrace-direct-modify.o CC [M] samples/ftrace/sample-trace-array.o CC [U] samples/hidraw/hid-example CC [M] samples/hw_breakpoint/data_breakpoint.o CC [M] samples/kdb/kdb_hello.o CC [M] samples/kfifo/bytestream-example.o CC [M] samples/kfifo/dma-example.o CC [M] samples/kfifo/inttype-example.o CC [M] samples/kfifo/record-example.o CC [M] samples/kobject/kobject-example.o CC [M] samples/kobject/kset-example.o CC [M] samples/kprobes/kprobe_example.o CC [M] samples/kprobes/kretprobe_example.o CC [M] samples/livepatch/livepatch-sample.o CC [M] samples/livepatch/livepatch-shadow-mod.o CC [M] samples/livepatch/livepatch-shadow-fix1.o CC [M] samples/livepatch/livepatch-shadow-fix2.o CC [M] samples/livepatch/livepatch-callbacks-demo.o CC [M] samples/livepatch/livepatch-callbacks-mod.o CC [M] samples/livepatch/livepatch-callbacks-busymod.o CC [M] samples/rpmsg/rpmsg_client_sample.o CC [U] samples/seccomp/bpf-fancy.o CC [U] samples/seccomp/bpf-helper.o LD [U] samples/seccomp/bpf-fancy CC [U] samples/seccomp/dropper CC [U] samples/seccomp/bpf-direct CC [U] samples/seccomp/user-trap CC [U] samples/timers/hpet_example CC [M] samples/trace_events/trace-events-sample.o CC [M] samples/trace_printk/trace-printk.o CC [U] samples/uhid/uhid-example CC [M] samples/v4l/v4l2-pci-skeleton.o CC [U] samples/vfs/test-fsmount CC [U] samples/vfs/test-statx samples/vfs/test-statx.c:24:15: warning: ‘struct foo’ declared inside parameter list will not be visible outside of this definition or declaration 24 | #define statx foo | ^~~ CC [U] samples/watchdog/watchdog-simple AR samples/built-in.a Changes for v2: - Fix ARCH=i386 build error for bpfilter_umh - Rename 'user-ccflags' to 'userccflags' because 'user-ccflags' would conflict if an object called 'user.o' exists in the directory. - Support 'userldflags' Masahiro Yamada (14): bpfilter: match bit size of bpfilter_umh to that of the kernel kbuild: add infrastructure to build userspace programs bpfilter: use 'userprogs' syntax to build bpfilter_umh samples: seccomp: build sample programs for target architecture kbuild: doc: document the new syntax 'userprogs' samples: uhid: build sample program for target architecture samples: hidraw: build sample program for target architecture samples: connector: build sample program for target architecture samples: vfs: build sample programs for target architecture samples: pidfd: build sample program for target architecture samples: mei: build sample program for target architecture samples: auxdisplay: use 'userprogs' syntax samples: timers: use 'userprogs' syntax samples: watchdog: use 'userprogs' syntax Sam Ravnborg (1): samples: uhid: fix warnings in uhid-example Documentation/kbuild/makefiles.rst | 183 +++++++++++++++++++++-------- Makefile | 13 +- init/Kconfig | 4 +- net/bpfilter/Makefile | 11 +- samples/Kconfig | 26 +++- samples/Makefile | 4 + samples/auxdisplay/Makefile | 11 +- samples/connector/Makefile | 12 +- samples/hidraw/Makefile | 9 +- samples/mei/Makefile | 9 +- samples/pidfd/Makefile | 8 +- samples/seccomp/Makefile | 42 +------ samples/timers/Makefile | 17 +-- samples/uhid/.gitignore | 2 + samples/uhid/Makefile | 9 +- samples/uhid/uhid-example.c | 4 +- samples/vfs/Makefile | 11 +- samples/watchdog/Makefile | 10 +- scripts/Makefile.build | 6 + scripts/Makefile.clean | 2 +- scripts/Makefile.userprogs | 45 +++++++ usr/include/Makefile | 4 + 22 files changed, 267 insertions(+), 175 deletions(-) create mode 100644 samples/uhid/.gitignore create mode 100644 scripts/Makefile.userprogs -- 2.25.1