From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f202.google.com (mail-yw1-f202.google.com [209.85.128.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 408D97B for ; Tue, 22 Nov 2022 00:19:19 +0000 (UTC) Received: by mail-yw1-f202.google.com with SMTP id 00721157ae682-393c38f7bcfso105327217b3.5 for ; Mon, 21 Nov 2022 16:19:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:mime-version:message-id:date:from:to:cc:subject :date:message-id:reply-to; bh=G0hXMTY80VdIvqYOcPDvs1KFXXEcVE57ImwJ1NC0xJ0=; b=TeqnmqJc1Rpqk70LVMY/kdh7hasPCpSgcBBcUhLqyxDfT5WaVvRNM7FYAUTaga37sw 6Np9ZU2dXwZcWiX7YfSOwu828UybvO9/mFeQQYf7ZB4/mNpk3avcTf2mJ7BaTxzOkPVQ 0KuXd8ML4QgvIFgLuZfZ/Fp/Lspvq2eGgi5AwBucXp/cRHy7Uh3UDGmkgd1yZhWy4Q4G FCWuRGgcSGO32vZIs4IjN4ciloXEqjPVyUA7hxHVX114wjW/NcmmpqDCJ3ZFyaTl7IYw IXr3GB87CVq+xFUS6gm96w4K3MjxaXPUouuaFtGLS62310cL60JDty4T6RyPyQO5kXcl axww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:mime-version:message-id:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=G0hXMTY80VdIvqYOcPDvs1KFXXEcVE57ImwJ1NC0xJ0=; b=M2ijH+ScNne01HrT4sfTHD6RXlVKcu3CYqv5nNv3RAmbWwYVgPHN+JiWsMv7iuEfeV QNVly6wIaXE3/d88cbRk5TzEkddoQV/1guoqaMGnvf0aNowWbX2llbtoK0tJ5uQtVUAQ dNhSQZV1XeP2mSxKTePv6vmR+hwbfP/bySLQSE1bFTpuQA2AmNYHWsCwxW+9ah0c3jar ATjG5nD6BHKio8rWfRAGv10ACRbAPEF8uCHRdTWFlcNXQMN5nLCLU3Yw1v99Vo6pcvZE FQdhhSKxqlAbSvoTiraBxq/Ol+yG6a/I0ggK7b6+IFyzpWfXpNAm/W7xMV+wkghk7MoS DF/Q== X-Gm-Message-State: ANoB5pkcTadIUNnziHQqCShmz8fUit6TNrGfdjZ5qUPRZ77hAQO8LK/R H4fC+9wYA1Epv+7uI4rORiFIf0KgQTF7 X-Google-Smtp-Source: AA0mqf665OYUODFhCpZtd4KUTkQgZM7xzDGktxRFFcuT8xEoFsoZmHMvVA27Dj7kN9vTqVa6BccMxrZS+IfC X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:2107:a1f5:8582:5608]) (user=irogers job=sendgmr) by 2002:a81:7cd6:0:b0:357:6958:372a with SMTP id x205-20020a817cd6000000b003576958372amr1716354ywc.255.1669075901807; Mon, 21 Nov 2022 16:11:41 -0800 (PST) Date: Mon, 21 Nov 2022 16:11:21 -0800 Message-Id: <20221122001125.765003-1-irogers@google.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.38.1.584.g0f3c55d4c2-goog Subject: [PATCH v2 0/4] objtool build improvements From: Ian Rogers To: Josh Poimboeuf , Peter Zijlstra , Nathan Chancellor , Nick Desaulniers , Tom Rix , Masahiro Yamada , Nicolas Schier , linux-kernel@vger.kernel.org, llvm@lists.linux.dev Cc: Stephane Eranian , Andrii Nakryiko , Jiri Olsa , Arnaldo Carvalho de Melo , Namhyung Kim , Ian Rogers Content-Type: text/plain; charset="UTF-8" Install libsubcmd and then get headers from there, this avoids inadvertent dependencies on things in tools/lib. Fix V=1 support. Clean up how HOSTCC is used to override CC to avoid CFLAGS being set for say gcc, and then CC being overridden to clang. Support HOSTCFLAGS as a make option. v2. Include required "tools lib subcmd: Add install target" that is already in Arnaldo's tree: https://lore.kernel.org/lkml/20221109184914.1357295-3-irogers@google.com/ https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/commit/?h=perf/core&id=630ae80ea1dd253609cb50cff87f3248f901aca3 When building libsubcmd.a from objtool's Makefile, clear the subdir to avoid it being appended onto OUTPUT and breaking the build. Ian Rogers (4): tools lib subcmd: Add install target objtool: Install libsubcmd in build objtool: Properly support make V=1 objtool: Alter how HOSTCC is forced tools/lib/subcmd/Makefile | 49 ++++++++++++++++++++++++++++ tools/objtool/Build | 2 -- tools/objtool/Makefile | 68 +++++++++++++++++++++++++++------------ 3 files changed, 97 insertions(+), 22 deletions(-) -- 2.38.1.584.g0f3c55d4c2-goog