From patchwork Fri Aug 28 14:10:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yonggang Luo X-Patchwork-Id: 11742913 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1179413A4 for ; Fri, 28 Aug 2020 14:11:10 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DD0432086A for ; Fri, 28 Aug 2020 14:11:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="pDTVkwow" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DD0432086A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:36514 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kBf5x-0002qO-2X for patchwork-qemu-devel@patchwork.kernel.org; Fri, 28 Aug 2020 10:11:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47686) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kBf5P-0001y8-W0 for qemu-devel@nongnu.org; Fri, 28 Aug 2020 10:10:36 -0400 Received: from mail-pj1-x102f.google.com ([2607:f8b0:4864:20::102f]:55904) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kBf5O-0003mk-3s for qemu-devel@nongnu.org; Fri, 28 Aug 2020 10:10:35 -0400 Received: by mail-pj1-x102f.google.com with SMTP id 2so544917pjx.5 for ; Fri, 28 Aug 2020 07:10:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=6qCNOdMxmqe+iIT4o+pq/rSQOvYLdMUa0vzVTaAuPpI=; b=pDTVkwowmCYqetBbzWXTFR1BKIWwUkISZHGefXKu5aXjC+EG1YE8BYr7gXMZ1zI9A4 ZsJkq6+N/xUz40uYIhOEDZkGtb6zzt9ygNRmtDgE8i4x3MI3GvLG/kJvK7IOrF1pQcQ/ 80diAY2vBjVs+T78dFwMtCxXbsO04pCs5disFjDPG/Zydgsowl9q9/VCEnzgzHr6zZQ2 s9KDpb3QASymuvanzZDGJj+Prz+n0bCTURGV4OQ/NgaJxr8MA6bqCRYM7zPZ7WDABlQi ehf8Ce4Y9BNVVxG/+tIkIH2sajbjGqHIyHFoaAWGfM+QBDGFznWFkTS0Jfx6SdFvVojP FcBg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=6qCNOdMxmqe+iIT4o+pq/rSQOvYLdMUa0vzVTaAuPpI=; b=mw55eoJC+f7D0I6SwhF001VBf+srSf1Pcp59su/JdJBlCmxJtXPlYmFLQP6GqBi49/ Ru/mQDLrVWuldHidAsYq+KTWq9YgLvSTkvhCvYheygI+UQcc5bSnFYUxlGjdchvXM9ru kExg7prFXeuEvgcneX+hPxI0a+rw/ThlXq/kTAHkk9NqEpbmpDNuB4JSQuh4qZRHet4I FXtxUtqGzsv5lY2/H8xRz1B1FP53Gf4yCWjRiSeC2Ab2N/LorGSEg/AtOXNxpHw+QVuu 3qdIzGLokNjmytAWfi+vPhaHbZVFlKyrMxgOjPF8O+RNKOez2eZUA59dV5bT+EB0RDCJ ruTw== X-Gm-Message-State: AOAM532U0dvuTvAUYve/yKT+vMdgdIRTm/7IkaYahhN3w7ZEfW4ag7bg 6HyGmj8EjJtagR/qCsO49f+A4kEP9sgw+g== X-Google-Smtp-Source: ABdhPJzjBww1eWnWc4et25Z/IMKRoZa5UceczcQWniKdgrZcxVQl+WFTrA9+ZFVmekhPWMOHgZg3fw== X-Received: by 2002:a17:90a:13c4:: with SMTP id s4mr1366041pjf.141.1598623831985; Fri, 28 Aug 2020 07:10:31 -0700 (PDT) Received: from localhost.localdomain ([103.94.185.75]) by smtp.googlemail.com with ESMTPSA id w28sm1953440pfj.161.2020.08.28.07.10.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Aug 2020 07:10:31 -0700 (PDT) From: luoyonggang@gmail.com To: qemu-devel@nongnu.org Subject: [PATCH] meson: Convert undefsym.sh to undefsym.py Date: Fri, 28 Aug 2020 22:10:11 +0800 Message-Id: <20200828141011.1434-1-luoyonggang@gmail.com> X-Mailer: git-send-email 2.27.0.windows.1 MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::102f; envelope-from=luoyonggang@gmail.com; helo=mail-pj1-x102f.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Paolo Bonzini , Yonggang Luo , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" From: Yonggang Luo undefsym.sh are not msys2 compatible, convert it to python script Signed-off-by: Yonggang Luo --- meson.build | 2 +- scripts/undefsym.py | 57 +++++++++++++++++++++++++++++++++++++++++++++ scripts/undefsym.sh | 20 ---------------- 3 files changed, 58 insertions(+), 21 deletions(-) create mode 100644 scripts/undefsym.py delete mode 100755 scripts/undefsym.sh diff --git a/meson.build b/meson.build index 74f8ea0c2e..9d8419bf82 100644 --- a/meson.build +++ b/meson.build @@ -859,7 +859,7 @@ foreach d, list : modules endforeach nm = find_program('nm') -undefsym = find_program('scripts/undefsym.sh') +undefsym = find_program('scripts/undefsym.py') block_syms = custom_target('block.syms', output: 'block.syms', input: [libqemuutil, block_mods], capture: true, diff --git a/scripts/undefsym.py b/scripts/undefsym.py new file mode 100644 index 0000000000..c690f88c7a --- /dev/null +++ b/scripts/undefsym.py @@ -0,0 +1,57 @@ +#!/usr/bin/env python3 +# -*- coding: utf-8 -*- + +# Before a shared module's DSO is produced, a static library is built for it +# and passed to this script. The script generates -Wl,-u options to force +# the inclusion of symbol from libqemuutil.a if the shared modules need them, +# This is necessary because the modules may use functions not needed by the +# executable itself, which would cause the function to not be linked in. +# Then the DSO loading would fail because of the missing symbol. + + +""" +Compare the static library with the shared module for compute the symbol duplication +""" + +import sys +import subprocess + +def filter_lines_set(stdout, is_static = True): + linesSet = set() + for line in stdout.splitlines(): + tokens = line.split(b' ') + if len(tokens) >= 1: + if len(tokens) > 1: + if is_static and tokens[1] == b'U': + continue + if not is_static and tokens[1] != b'U': + continue + new_line = b'-Wl,-u,' + tokens[0] + if not new_line in linesSet: + linesSet.add(new_line) + return linesSet + +def main(args): + if len(args) <= 3: + sys.exit(0) + + nm = args[1] + staticlib = args[2] + pc = subprocess.run([nm, "-P", "-g", staticlib], stdout=subprocess.PIPE) + if pc.returncode != 0: + sys.exit(-1) + lines_set_left = filter_lines_set(pc.stdout) + + shared_modules = args[3:] + pc = subprocess.run([nm, "-P", "-g"] + shared_modules, stdout=subprocess.PIPE) + if pc.returncode != 0: + sys.exit(-1) + lines_set_right = filter_lines_set(pc.stdout, False) + lines = [] + for line in sorted(list(lines_set_right)): + if line in lines_set_left: + lines.append(line) + sys.stdout.write(b'\n'.join(lines).decode()) + +if __name__ == "__main__": + main(sys.argv) diff --git a/scripts/undefsym.sh b/scripts/undefsym.sh deleted file mode 100755 index b9ec332e95..0000000000 --- a/scripts/undefsym.sh +++ /dev/null @@ -1,20 +0,0 @@ -#! /usr/bin/env bash - -# Before a shared module's DSO is produced, a static library is built for it -# and passed to this script. The script generates -Wl,-u options to force -# the inclusion of symbol from libqemuutil.a if the shared modules need them, -# This is necessary because the modules may use functions not needed by the -# executable itself, which would cause the function to not be linked in. -# Then the DSO loading would fail because of the missing symbol. - -if test $# -le 2; then - exit 0 -fi - -NM=$1 -staticlib=$2 -shift 2 -# Find symbols defined in static libraries and undefined in shared modules -comm -12 \ - <( $NM -P -g $staticlib | awk '$2!="U"{print "-Wl,-u," $1}' | sort -u) \ - <( $NM -P -g "$@" | awk '$2=="U"{print "-Wl,-u," $1}' | sort -u)