From patchwork Wed Oct 9 14:33:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tamir Duberstein X-Patchwork-Id: 13828547 Received: from mail-qk1-f174.google.com (mail-qk1-f174.google.com [209.85.222.174]) (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 1D054126BF1; Wed, 9 Oct 2024 14:34:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728484483; cv=none; b=FrlaTEWZihAkLdnEIh7iwtQBffVZTF+r92FvDA/RuKduaSt9WyR8bRmKAodzGFfqmRMqkVj14s2gjKbTtWyDK6+D6jY6RP3gRsvj6pmgmwMLsrJFFPOreqyihUZL7vaWVKv4HE1dTeS+v8i8hoG9Yo73/g/Um4+i0pn3D5i2tkw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728484483; c=relaxed/simple; bh=7c8gEB50w0/252V8mh0s6JifNpaNfzrvHypAywEgpf8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=E7KXLRFgFSV4s9TyRkY3BrUoFgaPtIBXD4nH7RDCAGuHHRdzB5QXCVHYkIE68FdxLlFEd2XiEZH2SZMp/5/7zyPcnpx/bwxuBbOdebipMGNOukE+eg/1A3o2AMHX/B8GBUl0UFIqZNKfoHsH+zf47udZH011tFc71gwEuJmwtnY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=aJBRMXqC; arc=none smtp.client-ip=209.85.222.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="aJBRMXqC" Received: by mail-qk1-f174.google.com with SMTP id af79cd13be357-7afc592ca19so117959285a.1; Wed, 09 Oct 2024 07:34:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1728484480; x=1729089280; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=fYvTTh3ATKWJOexUuHMRYzN6+ScC1tH/4+UEFE+ph4g=; b=aJBRMXqCDWRAXzYVFCBgDyguuRtmTH/PDUH4nU9TYNkD1VmcdqpKGvJKtPmYY2q0GG nyCeIO7SeDF2gm2RE7T4uQx4odzZzdygenqFxuplyLSVJYXFjUFQHt9nKPH8aH3Z2Nhu SHDSA01EeezjCZlqmKyXuI/b7s6EXTxWO4Rml4/LMyajM69vlccfrFAb5Nk+FvViwZQR 3v+3e6VCQR9mi7yE1o1Eihqoc4tgjIFRyuO/ODMgWCw1rCtUHGaGwgj6GOTZbys0PtM1 oCX2VbRNHAaBzZL2KWMXM5dFzOIVRESsv2nJbdn+txx43sDFF6vytPS+kYTwVt/fdNjr M0uA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728484480; x=1729089280; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=fYvTTh3ATKWJOexUuHMRYzN6+ScC1tH/4+UEFE+ph4g=; b=s4eC6I4bHz+3HCeZKcYzv+FcbV1dUm+9yOXN7SisqVQG35FPcBSmEM1i9nyOjJFRzN xSVR1PO0m86l+9QgsB4Cgy6fCTWCf7Mw3KrwFIqrVxrRi1GyY3pEZMpbPI7iUiw2t12x RddymHghXzz6I7QabmAHd8IEyaoLzyLyBn9CyrCZ2anZBvh72rXuRQRXtx0OPrXLT1NM sp3d74jeH6oTrm9NU6OLNzJxLlDarpMT5puwGFgv/ljHP/JYj04vxD14/a4uUIDKREtc MV84gzlVUQOz5wh6qoQjr78ofJkD9JWKr6fIgYT+tChD/v5pNylZ0SLoFkvg4sV5gTlz MqyQ== X-Forwarded-Encrypted: i=1; AJvYcCV1H2fpPWYD1rSSW7z/zsdUAN7yQYcWq7J7R6EkWUwWj1WO6cTZxcRji7p2xCxumPRIJP4WJ5GUMn5JcLs=@vger.kernel.org, AJvYcCXxm4BGvPdA9rKJo/wlb4cl6XgTRy5WV+GNr7+fp7Q01BD5IQfVwufQd3F8EVeuCXBdtRhL/Ldhhxk5KrYh@vger.kernel.org X-Gm-Message-State: AOJu0YwdLuxuMscbR4XRwY4duIXpn64mr2wRxkvIpEhQe5YhDtXsBa+j B2PPmGvDR15wAIUTJYTihhPG28eUjQK4w1nN9Np5xkusrHTfhqr9u27wy45M X-Google-Smtp-Source: AGHT+IG5RPqj6gZKuFlLT24dUR6WuriG1+zrXDTP8sWzVBrqMGv08Q43bbdZNKOrDw2B6g7L4to/ig== X-Received: by 2002:a05:620a:c4a:b0:7a9:a7b4:57f1 with SMTP id af79cd13be357-7b0874cbe8emr432369485a.59.1728484480402; Wed, 09 Oct 2024 07:34:40 -0700 (PDT) Received: from localhost.localdomain ([2620:10d:c091:600::1:6bd1]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7afce7a2bc0sm120989785a.61.2024.10.09.07.34.39 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 09 Oct 2024 07:34:39 -0700 (PDT) From: Tamir Duberstein To: rust-for-linux@vger.kernel.org Cc: Daniel Gomez , Tamir Duberstein , Fiona Behrens , Masahiro Yamada , Nathan Chancellor , Nicolas Schier , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?B?= =?utf-8?q?j=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Chuck Lever , =?utf-8?b?w43DsWlnbyBIdWd1ZXQ=?= , Laurent Pinchart , Vegard Nossum , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org Subject: [PATCH v4] rust: query the compiler for dylib path Date: Wed, 9 Oct 2024 10:33:00 -0400 Message-ID: <20241009143301.6006-2-tamird@gmail.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kbuild@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Rust proc-macro crates are loaded by the compiler at compile-time, so are always dynamic libraries; on macOS, these artifacts get a .dylib extension rather than .so. Replace hardcoded paths ending in .so with paths obtained from the compiler. This allows the kernel to build with CONFIG_RUST=y on macOS. Co-developed-by: Fiona Behrens Signed-off-by: Fiona Behrens Signed-off-by: Tamir Duberstein --- V3 -> V4: Added motivation. Added missing Signed-off-by. V2 -> V3: Added .strip() to rustc output to remove errant newline. V1 -> V2: De-duplicated and sorted imports. Changed Signed-off-by to Co-developed-by. .gitignore | 1 + Makefile | 2 +- rust/Makefile | 21 ++++++++++++--------- scripts/generate_rust_analyzer.py | 15 +++++++++++---- 4 files changed, 25 insertions(+), 14 deletions(-) diff --git a/.gitignore b/.gitignore index a61e4778d011..088696a6a46a 100644 --- a/.gitignore +++ b/.gitignore @@ -22,6 +22,7 @@ *.dtb.S *.dtbo.S *.dwo +*.dylib *.elf *.gcno *.gcda diff --git a/Makefile b/Makefile index a9e723cb0596..470e6f20c513 100644 --- a/Makefile +++ b/Makefile @@ -1513,7 +1513,7 @@ MRPROPER_FILES += include/config include/generated \ certs/x509.genkey \ vmlinux-gdb.py \ rpmbuild \ - rust/libmacros.so + rust/libmacros.so rust/libmacros.dylib # clean - Delete most, but leave enough to build external modules # diff --git a/rust/Makefile b/rust/Makefile index 0856fd6bc610..94ae550ae8b3 100644 --- a/rust/Makefile +++ b/rust/Makefile @@ -11,9 +11,6 @@ always-$(CONFIG_RUST) += exports_core_generated.h obj-$(CONFIG_RUST) += helpers/helpers.o CFLAGS_REMOVE_helpers/helpers.o = -Wmissing-prototypes -Wmissing-declarations -always-$(CONFIG_RUST) += libmacros.so -no-clean-files += libmacros.so - always-$(CONFIG_RUST) += bindings/bindings_generated.rs bindings/bindings_helpers_generated.rs obj-$(CONFIG_RUST) += alloc.o bindings.o kernel.o always-$(CONFIG_RUST) += exports_alloc_generated.h exports_helpers_generated.h \ @@ -36,9 +33,15 @@ always-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.c obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated.o obj-$(CONFIG_RUST_KERNEL_DOCTESTS) += doctests_kernel_generated_kunit.o -# Avoids running `$(RUSTC)` for the sysroot when it may not be available. +# Avoids running `$(RUSTC)` when it may not be available. ifdef CONFIG_RUST +libmacros_name := $($(RUSTC) --print file-names --crate-name macros --crate-type proc-macro - < /dev/null) +libmacros_extension := $(patsubst libmacros.%,%,$(libmacros_name)) + +always-$(CONFIG_RUST) += $(libmacros_name) +no-clean-files += $(libmacros_name) + # `$(rust_flags)` is passed in case the user added `--sysroot`. rustc_sysroot := $(shell MAKEFLAGS= $(RUSTC) $(rust_flags) --print sysroot) rustc_host_target := $(shell $(RUSTC) --version --verbose | grep -F 'host: ' | cut -d' ' -f2) @@ -118,10 +121,10 @@ rustdoc-alloc: $(RUST_LIB_SRC)/alloc/src/lib.rs rustdoc-core rustdoc-compiler_bu +$(call if_changed,rustdoc) rustdoc-kernel: private rustc_target_flags = --extern alloc \ - --extern build_error --extern macros=$(objtree)/$(obj)/libmacros.so \ + --extern build_error --extern macros=$(objtree)/$(obj)/$(libmacros_name) \ --extern bindings --extern uapi rustdoc-kernel: $(src)/kernel/lib.rs rustdoc-core rustdoc-macros \ - rustdoc-compiler_builtins rustdoc-alloc $(obj)/libmacros.so \ + rustdoc-compiler_builtins rustdoc-alloc $(obj)/$(libmacros_name) \ $(obj)/bindings.o FORCE +$(call if_changed,rustdoc) @@ -342,10 +345,10 @@ quiet_cmd_rustc_procmacro = $(RUSTC_OR_CLIPPY_QUIET) P $@ -Clink-args='$(call escsq,$(KBUILD_HOSTLDFLAGS))' \ --emit=dep-info=$(depfile) --emit=link=$@ --extern proc_macro \ --crate-type proc-macro \ - --crate-name $(patsubst lib%.so,%,$(notdir $@)) $< + --crate-name $(patsubst lib%.$(libmacros_extension),%,$(notdir $@)) $< # Procedural macros can only be used with the `rustc` that compiled it. -$(obj)/libmacros.so: $(src)/macros/lib.rs FORCE +$(obj)/$(libmacros_name): $(src)/macros/lib.rs FORCE +$(call if_changed_dep,rustc_procmacro) quiet_cmd_rustc_library = $(if $(skip_clippy),RUSTC,$(RUSTC_OR_CLIPPY_QUIET)) L $@ @@ -424,7 +427,7 @@ $(obj)/uapi.o: $(src)/uapi/lib.rs \ $(obj)/kernel.o: private rustc_target_flags = --extern alloc \ --extern build_error --extern macros --extern bindings --extern uapi $(obj)/kernel.o: $(src)/kernel/lib.rs $(obj)/alloc.o $(obj)/build_error.o \ - $(obj)/libmacros.so $(obj)/bindings.o $(obj)/uapi.o FORCE + $(obj)/$(libmacros_name) $(obj)/bindings.o $(obj)/uapi.o FORCE +$(call if_changed_rule,rustc_library) endif # CONFIG_RUST diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py index d2bc63cde8c6..04ff5b25b851 100755 --- a/scripts/generate_rust_analyzer.py +++ b/scripts/generate_rust_analyzer.py @@ -8,6 +8,7 @@ import json import logging import os import pathlib +import subprocess import sys def args_crates_cfgs(cfgs): @@ -35,8 +36,7 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs): crates_cfgs = args_crates_cfgs(cfgs) def append_crate(display_name, root_module, deps, cfg=[], is_workspace_member=True, is_proc_macro=False): - crates_indexes[display_name] = len(crates) - crates.append({ + crate = { "display_name": display_name, "root_module": str(root_module), "is_workspace_member": is_workspace_member, @@ -47,7 +47,15 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs): "env": { "RUST_MODFILE": "This is only for rust-analyzer" } - }) + } + if is_proc_macro: + proc_macro_dylib_name = subprocess.check_output( + [os.environ["RUSTC"], "--print", "file-names", "--crate-name", display_name, "--crate-type", "proc-macro", "-"], + stdin=subprocess.DEVNULL, + ).decode('utf-8').strip() + crate["proc_macro_dylib_path"] = f"{objtree}/rust/{proc_macro_dylib_name}" + crates_indexes[display_name] = len(crates) + crates.append(crate) # First, the ones in `rust/` since they are a bit special. append_crate( @@ -77,7 +85,6 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs): [], is_proc_macro=True, ) - crates[-1]["proc_macro_dylib_path"] = f"{objtree}/rust/libmacros.so" append_crate( "build_error",