5 An object that encapsulates, in a memory-efficient way, the data needed to build part or all of a command line. The values of the result represent attribute values as follows: Aug 13, 2024 · It maps from an attribute name to an attribute object (see attr module). I am using this page from the bazelbuild github as a reference. Feb 1, 2020 · Bazel has a neat feature that can simplify a lot of work with tests and executables: the ability to make data files available at run-time using `data` attributes. 6 days ago · You could do "srcs": attr. The library's import path must be specified with the importpath attribute. That is, a select in the tools attribute of a genrule will work the same as a select in the srcs. Module extensions could just consume these values via attr. repository_ctx. label Dec 6, 2018 · I'm currently running Bazel 0. For information on cc_library and hdrs header files, see cc_library. actions. While the name attribute is Mar 14, 2024 · Send feedback Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. ; cuda_objects: If you don't understand what device link means, you must never use it. But what are the other options? Dec 7, 2019 · Bazel can isolate a build from the host system using platforms and toolchains. By default, Bazel will use the normal JDK launcher (bin/java or java. Aug 13, 2024 · def _impl (repository_ctx): url = repository_ctx. name) return DefaultInfo(executable = ctx. Including multiple files in a target When attached as an incoming edge transition, attr does not include any attributes that use a selector to resolve their value. bazel_skylib could provide convenience functions such as is_complex_value and parse_complex_value (that essentially detect and strip off the UUID. This article focuses on rules that communicate with each other to build a dependency graph that can be used by a linker (or a linker-like action). This page covers how to get started using Bazel's query language to trace dependencies in your code. 0 is a major release and Bazel’s second LTS release. 0-75-generic. Note that since Args objects are flattened before indexing, if there is an Args object of unknown size then all subsequent strings will be at unpredictable indices. local Aug 3, 2023 · Try to run bazel run //package:tool. For example, it might say attr_aspects = ['deps]. Use Starlark 6 days ago · Report an issue open_in_new View source open_in_new Nightly · 7. attr. Aug 13, 2024 · Each attribute has a name and a type. 3 · 7. bool; int; int_list Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. write( output = ctx. This is a quick tutorial to get you started using Bazel's query language to trace dependencies in your code. What is the output of bazel info release?. If the given value is already a Label, it is returned unchanged. 0 License, and code samples are licensed under the Apache 2. Aug 13, 2024 · Any attribute that specifies an input label (those defined with attr. Stage 2. Aug 13, 2024 · Here you will find some of the most common use cases for building C++ projects with Bazel. This means if another target, //test-app/test-app2, depends on //test-app, which in turn depends on //test-app/test-app-dep, the output of the query would include all three targets as dependencies of the main //test-app target: For files that have default_visibility, use this to find the targets that don't change visibility: bazel query 'attr(visibility, "", //path/to/package:*)' With a bit of work, you should be able to combine the results and get what you need. Sep 10, 2017 · I'm pretty lost trying to create a custom repository rule pypi. Generally allows any target. 5 6. exe). 5. 0 · 6. The resulting targets can be consumed by C/C++ Rules. The simplest use of this attribute restricts a target to a single platform. includes: List of strings; optional. Download and try it out, Get a huge productivity boost with rule, attribute, and function definitions right in Here, the Debian package is built from three pkg_tar targets:. Which operating system are you running Bazel on? Linux Mint 21. release 6. label_keyed_string_dict(allow_empty=True, *, default={}, doc='', allow_files=None, allow_rules=None, providers=[], flags=[], mandatory=False, cfg=None, aspects=[]) Creates a schema for an attribute holding a dictionary, where the keys are labels and the values are strings. SkylarkRuleAspect. bzl file, call the visibility() function from within the file. Configurable attributes, commonly known as select(), is a Bazel feature that lets users toggle the values of BUILD rule attributes at the command line. The values of the result represent attribute values as follows: Aug 13, 2024 · Send feedback Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. g. Structs fields cannot be reassigned once the struct is created. { "srcs": attr. 9. bazel help target-syntax Explains the syntax for specifying targets. output_list and outputs. Objective. 5 A provider for compilation and linking of C++. Tools to help your team maximize output with Bazel. create_cc_toolchain_config_info. To set the load visibility of a . Aspect implementation Aug 13, 2024 · Bazel prefers packages in the main repository to be under the workspace root. Firstly Aug 13, 2024 · When attached as an incoming edge transition, attr does not include any attributes that use a selector to resolve their value. read(repository_ctx. bzl file. The rule tells Bazel to build a self-contained executable binary from the hello-world. The tool applied to the action will be the first tool in the list with a feature set that matches the feature configuration. Who's using Bazel Oct 3, 2017 · There is bazel query. Each function returns an object representing the schema of a single attribute. In the BUILD file, the target label appears as a string object, such as //pkg:name. A dictionary supports indexing using d[k] and key membership testing using k in d; both operations take constant time. The outs attribute present in many rules has type "list of output labels"; this is similar to the type of the srcs attribute, but differs in two significant ways. Feb 21, 2022 · We are seeing duplicate builds of the same target in Bazel and wondering what could cause this. Declaring load visibility. js files" or something similar, though with the file extensions being dynamically generated in the execution phase, I could see how that would be harder to fit into the bazel model. Cquery (Configurable Query) Overview; Basic Syntax; Target Pattern Evaluation; Functions; Options; cquery vs. bazel, or in legacy contexts, WORKSPACE or WORKSPACE. string_list() and e. file("BUILD. It's quite powerful so I advise to read through the documentation page to design the query command precisely. In our example, the hello-world target instantiates Bazel’s built-in cc_binary rule. 0 successfully the next step is to execute the command bazel build // but I am getting errors. You will set up your workspace and build a simple Java project that illustrates key Bazel concepts, such as targets and BUILD files. If you have not done so already, get started with building C++ projects with Bazel by completing the tutorial Introduction to Bazel: Build a C++ Project. Bazel finds its packages by searching the package path. struct repository_ctx. Here you can ask Bazel to only refetch those external repos where the repository_rule definition has the configure attribute set, use bazel fetch --all --configure. See 'bazel help shutdown' on how to shutdown a Bazel server. A repo is a directory tree with a boundary marker file at its root; such a boundary marker file could be MODULE. This is just a Oct 18, 2018 · It would be even nicer if a rule attr was able to "accept a folder of . output() is bug-prone, as two targets of the same rule would be unable to exist in the same package under default behavior. The result contains an entry for each attribute, with the exception of private ones (whose names do not start with a letter) and a few unrepresentable legacy attribute types. Note that this attribute is not actually adding a dependency edge to those targets, the dependency edge should instead be created by deps. A struct to access the values of attributes with split configurations. bazel, REPO. txt contains the rest of the keys and their values; The contract is: "stable" keys' values should change rarely, if possible. Imported packages outside the standard library are listed in the deps attribute using Bazel labels that refer to corresponding go_library rules. struct ctx. I have build targets with associated tags. Not all attributes need to be specified in every rule. 基础知识1. label(aspects = ['foo_aspect'], bazel looks at the definition of the aspect to see what attributes it propogates down. Aug 13, 2024 · Dependency attributes, such as attr. The entries in this attribute are just strings. 5 A generic object with fields. Another common argument for attr_aspects is ['*'] which would propagate the aspect to all attributes of a rule. Bazel uses this attribute to discover per-action tool and execution requirements. However, its output also includes dependencies the //test-app target inherits. ) build_file_content: String; default is "" The content for the BUILD file for this repository. This is a top-level module for defining the attribute schemas of a rule or aspect. new-repo-name may work well for distinguishing it from the repository's actual BUILD files. The struct fields correspond to the attribute names. To quickly answer your concrete question, I think this will work for you: bazel query '// except kind(. This kind of attribute forms the basis of the target graph. 0 License. Jul 11, 2022 · My understanding of dependency attributes documentation calls for data attr label_list to be used, $ bazel build size INFO: Analyzed target //:size (4 packages Aug 13, 2024 · This is a top-level module for defining the attribute schemas of a rule or aspect. bzl: def _impl(repository_ctx): repository_ctx. bazel", repository_ctx. This page contains resources that help you use Bazel with Java projects. Aug 13, 2024 · Bazel already internally compresses query outputs greater than 2 20 bytes regardless of the value of this setting, so setting this to True may not reduce retained heap. Attributes starting with _ are private, and can be used to add an implicit dependency on a label to a file (a repository rule cannot depend on a generated artifact). delete Aug 13, 2024 · Any cc_binary that implements the Java Invocation API can be specified as a value for this attribute. If the attribute is a label list, the value of split_attr is a dict of the keys of the split (as strings) to lists of the ConfiguredTargets in that branch of the split. run_shell( outputs Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. Jul 2, 2019 · I'd like to find all build targets in the entire repository, which have the value my-binary in the attribute tags. Prerequisites When attached as an incoming edge transition, attr does not include any attributes that use a selector to resolve their value. Aug 15, 2018 · Bazel provides a special purpose data structure called a depset. e. Like any set, a depset is a set of unique values. 14 in which the keys aren't sorted implicitly. Represents a configuration transition across a dependency edge. The srcs attribute present in many rules has type "list of labels"; its value, if present, is a list of labels, each being the name of a target that is an input to this rule. While processing the keys during evaluation phase, the keys are being sorted implicitly. cc to 64-bit Windows. Bazel accomplishes this by using the android_ndk_repository repository rule. This tutorial covers the basics of building Java applications with Bazel. Attributes thus form a dictionary from keys (names) to optional, typed values. executable File ; or None ; default is None If this rule is marked executable or test , this is a File object representing the file that should be executed to run the target. Members. cc"]) lets file of any extension slip through when passed in the target of a filegroup. (Something like BUILD. bzl # known to work in bazel version 0. Consider this example: def _impl1(ctx): ctx. The cc_binary. expression: String; required Category name: attr-output-default; Flag in Bazel: --incompatible_no_output_attr_default; Automatic fix: no; Suppress the warning: # buildifier: disable=attr-output-default; The default parameter of attr. Dec 21, 2017 · The rule cc_inc_library will strips prefix attribute passed to this rule from the relative path of the header files specified in the hdrs attribute. This is a colon separated ordered list of bazel directories, each being the root of a partial source tree. output_list that the rule declares, there is a field whose name is the attribute's name. The prefix in the strip_include_prefix attribute is removed before this prefix is added. proto"], providers=[ProtoInfo]) however then targets in srcs would have to both produce . declare_file(f. This guide runs you through a set of basic queries you can use to learn more about your project's file dependencies. The related --java_launcher Bazel flag affects only those java_binary and java_test targets that have not specified a launcher attribute. When that rule is invoked, bazel will: This will affect how conditions are matched within those targets but not within the attribute that causes the change. if you wanted to create a efg. Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. Aug 13, 2024 · int string. sha256. txt file in the root of your unpacked archive, the add_efg_txt. label_keyed_string_dict) specifies dependencies of a certain type between a target and the targets whose labels (or the corresponding Label objects) are listed in that attribute when the target is defined. Nov 8, 2019 · The thing to do here is to have my_object output an executable that executes the other executables. It is intended for new Bazel developers with a basic knowledge of how Bazel and BUILD files work. For example, if //package:foo depends on //package:bar with a configuration transition, then the configuration of these two targets will differ: //package:bar's transition will be determined by that of //package:foo, as subject to the Apr 18, 2016 · Add appropriate parameter extractor (just the default one, passing through all the relevant attribute values) and introduce the validation when creating an aspect in Attribute. <ATTR>. 5 dict is a built-in type representing an associative mapping or dictionary. Configurable attributes, commonly known as select(), is a Bazel feature that lets users toggle the values of build rule attributes at the command line. @shs96c What do you think, could this "generic" version of maven. I wrote this up just now as a barebones example: def _test_archive_impl(repository_ctx): repository_ctx. 1 7. A very simple custom repository rule can do that for you. It is a shortcut for: list(ctx. The attributes in the target explicitly state its dependencies and options. Highlights--experimental_enable_bzlmod enables the new external dependency subsystem, Bzlmod. I don't think we have a better solution at the moment. Aug 13, 2024 · Bazel can run in many different build configurations, including several that use the Android Native Development Kit (NDK) toolchain. Aug 13, 2024 · This attribute should be used to list any targets that are exported by the shared library but are transitive dependencies of deps. query; Known Issues; Updates; Overview. Aug 13, 2024 · Bazel passes the elements in this attribute as arguments to the command. Example with attr. bool; int; int_list Aug 13, 2024 · For every attribute of type attr. 15. tools: The executable to invoke. *test, //)' | xargs bazel build attr_aspects is a list of rule attributes along which the aspect propagates. string() or attr. A specialized data structure that supports efficient merge operations and has a defined traversal order. 1 bazel 文件组织Workspace ：通常你可以理解为一个工程，对应一个repo，一个项目有自己唯一名字（Bazel鼓励它是全网唯一的）；一个Workspace的顶层目录下应该有一个 WORKSPACE 文件； Packages ：一… This directory contains examples of Bazel rules. The command can access these arguments using shell variable substitutions such as $1, $2, etc. attr. label_list, attr. Aug 13, 2024 · Attribute Stay organized with collections Save and categorize content based on your preferences. files ] all_outputs = [] for f in all_input_files: out = ctx. It links to a tutorial, build rules, and other information specific to building Java projects with Bazel. download When attached as an incoming edge transition, attr does not include any attributes that use a selector to resolve their value. Once defined, the rule may be used in a WORKSPACE file or a function called from WORKSPACE. label_keyed_string_dict. Jul 11, 2024 · Send feedback Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. Aug 13, 2024 · Attribute: Description: action_name: The Bazel action to which this action corresponds. Here is a sample output: [52,715 / 55,135] 12 action running Bazel package: some-pkg - Target: a_ Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. cquery is a variant of query that correctly handles select() and build options' effects on the build graph. For a language details and --output flag details, please see the reference manuals, Bazel query reference and Bazel cquery reference. Jul 11, 2024 · When set, the headers in the hdrs attribute of this rule are accessible at is the value of this attribute prepended to their repository-relative path. Jun 13, 2020 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Bazel needs to know where to search for included headers. label_list(), }, There's an int and a label_list. The minimum required JDK to run Bazel itself is now OpenJDK 11. 4 cuda_library: Can be used to compile and create static library for CUDA kernel code. basename) all_outputs += [out] ctx. The target will not be built for any platform that doesn't satisfy all of the constraints. label_list(allow_files=[". Nov 10, 2017 · However, it's not clear from the source list which headers are "exported" in the hdrs attribute vs. Jul 27, 2022 · You can use an outgoing-edge user-defined transition as detailed in Brian's answer, but one thing to note is that if the test target is built / run on its own (as a top-level target explicitly, or captured by a target pattern like //, //:all, //:*, or if a target depends on it directly), then it won't get the configuration transition. It uses the Bazel-native patch implementation, you can specify the patch strip number with `remote_patch_strip` sha256: String; optional The expected SHA-256 of the file downloaded. Jul 14, 2019 · Trying to build Google APIs for dart. The attribute name is implicitly added and must not be specified. split_attr. Jan 2, 2024 · Get help in your IDE by typing bazel help query or bazel help cquery on the command line. Aug 13, 2024 · Attribute Description; data: List of labels; default is []. I've defined a custom Bazel rule. bzl source file lives. Jan 16, 2021 · In Bazel you can define an attribute type, which could be int or string or output What does it mean to have a type of attribute as output? Here's an example: def _something(ctx): print(&quo Bazel query how-to. Which means once you apply, they propagate downwards the graph. When this is done, the rules will be almost completely independent from the host system. Due to the shortcomings of WORKSPACE, Bzlmod is going to replace the legacy WORKSPACE system in future Bazel releases. This page gathers the current best practices and frameworks by use case. proto files and provide a ProtoInfo provider, which is unlikely to work. 1. Aug 8, 2018 · This is a tracking issue for offering a migration solution for --incompatible_disable_deprecated_attr_params This flag would turn down a number of deprecated APIs pertaining to attr. label_list, declare a dependency from the target that owns the attribute to the target whose label appears in the attribute’s value. Here you can ask bazel to only refetch those external repositories where the repository_rule definition has the configure attribute set, use bazel sync --configure. List of include dirs to be added to the compile line. See this workaround , which involves defining a py_runtime target that points to either Python version as needed, and activating this py_runtime by setting Aug 13, 2024 · attr_aspects is a list of rule attributes along which the aspect propagates. label_list(allow_files = [ ". 28. This is a string attribute that behaves somewhat magically: when specified as an input to a repo rule invocation, it takes an apparent repo name; but when read from the repo rule's implementation function using repository_ctx. executable, is_executable = True, content = "echo %s 123" % ctx. This page describes the toolchain framework, which is a way for rule authors to decouple their rule logic from platform-based selection of tools. build/start point to code in this repository: C++ basics Working examples for the C++ Bazel Tutorial; Java basics Working examples for the Java Bazel Tutorial; Using query Working examples for The Query quickstart; Note that tutorials for other languages may be found under other repositories: iOS tutorial Aug 15, 2024 · struct repository_ctx. This option specifies the set of directories that are searched to find the BUILD file for a given package. split_attr. If an optional attribute is not specified in the rule then the corresponding struct value is None. The repository, and possibly the path Aug 13, 2024 · runfiles descriptor describing the runfiles this target needs to run when it is a dependency via any attribute other than the data attribute. The example uses a combination of a BUILD file and a rules. After installing Bazel 0. count(sub, start=0, end=None). Explore the cc_import. Jun 20, 2023 · This basic example lets you find all the targets you need to build //test-app. May 10, 2024 · A map of patch file URL to its integrity value, they are applied after extracting the archive and before applying patch files from the `patches` attribute. Apr 28, 2017 · attr_aspects are recursive. You can generate those files however you want, including a custom rule that uses your user-defined flags. txt contains all keys and values where the key's name starts with STABLE_ bazel-out/volatile-status. Bazel starts exactly one server per specified output base. targeted_filegroups for f in t. label_list ( allow_files Dec 20, 2017 · The documentation shows this: implementation = _impl, attrs = {. int(default = 1), "deps": attr. bzl file on GitHub, a component of Bazel's fast, scalable, multi-language build system. There are several different approaches to testing Starlark code in Bazel. Examples C++ auto-configured toolchain : it uses a repository rule to automatically create the C++ configuration files for Bazel by looking for the local C++ compiler, the Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. The values are provided by the user (if not, a default value is used). 2 7. defines argument propagates in the opposite direction: all targets that depend on some target A will receive all of target A's define s. Aug 13, 2024 · Bazel provides both predefined variables, my_attr = "prefix $(FOO) suffix" In other words, any substring matching $(FOO) gets expanded to FOO's value. This means that normal cc_library and cc_binary rules can be compiled for Android directly within Bazel. Aspect implementation attr. bazel-bin creates a tarball with the main binary (mode 0755) in /usr/bin,; bazel-tools create a tarball with the base workspace (mode 0644) to /usr/share/bazel/tools; the modes attribute let us specifies executable files, Jan 21, 2021 · If target P depends on target G, and I run bazel build :P, I want both targets to be built with copts = ["-DMY_DEFINE"], along with all dependencies of target G, etc. I. 0, when this attribute is serialized as part of bazel query --output=proto (or --output=xml), the leading slashes are omitted. Report an issue open_in_new View source open_in_new Nightly · 7. runfiles area of any executable which is output by or has a runtime dependency on this target. The struct value is always a File or None. Aug 13, 2024 · Load visibility is available as of Bazel 6. Aug 13, 2024 · Send feedback Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. Aug 15, 2018 · This time, we'll define a go_library rule that can compile a Go package that can be depended on by other libraries and binaries. This is also a marking provider telling C++ rules that they can depend on the rule with this provider. 5 This object is created during the analysis phase to represent a file or directory that will be read or written during the execution phase. 2 · 7. you really need to have a look at kind, so you have different code paths (the one thing I did right). It contains new features and backwards incompatible changes from 4. Due to 1. Bazel then writes the key-value pairs into two files: bazel-out/stable-status. bool; int; int_list Feb 1, 2022 · rules_docker has attrs like repository_file and tag_file for exactly this kind of thing. Aug 13, 2024 · Label Label(input). Converts a label string into a Label object, in the context of the package where the calling . Aug 13, 2024 · You may filter the output based on generator_function (which function generated the rules) or generator_name (the name attribute of the macro): bash $ bazel query --output=build 'attr(generator_function, my_macro, //my/path:all)' To find out where exactly the rule foo is generated in a BUILD file, you can try the following trick. It uses the Bazel-native patch implementation, you can specify the patch strip number with `remote_patch_strip` repo_mapping: Dictionary: String -> String; required Jan 23, 2024 · This is a top-level module for defining the attribute schemas of a rule or aspect. src) repository_ctx. 1 Aug 13, 2024 · This attribute is a label relative to the main workspace. cc source file with no dependencies. Here other-target is a dependency of my-target, and therefore other-target will be analyzed first. "number": attr. label_list, declare a dependency from the target that owns the attribute to the target whose label appears in the attribute's value. Dependency attributes, such as attr. The field value is a list of File objects corresponding to the labels given for that attribute in the target, or an empty list if the attribute was not specified in the target. When you build software with Bazel, you're running the same code that has been refined and tested for years at Google to build heavy-duty, mission-critical infrastructure, services, and applications. url checksum = repository_ctx. The example on the website is a little confusing, your code and directory structure will yield a much better demonstration purpose. This page is the reference manual for the Bazel Query Language used when you use bazel query to analyze build dependencies. 5 A constructor for simple value objects, known as provider instances. execu Aug 27, 2023 · patches (at least without also manipulating patch_tool and patch_args) would not add files it finds, but will apply them as patches. patch could look like this: Aug 13, 2024 · Source files used in a Bazel build are organized in repositories (often shortened to repos). May 8, 2024 · A list of files that are to be applied as patches after extracting the archive. attr Some tutorials under https://bazel. The argument to visibility() is a list of package specifications, just like the packages attribute of package_group. If a label type is not marked as allow_single_file, no corresponding struct field is generated. Returns the number of (non-overlapping) occurrences of substring sub in string, optionally restricting to [start:end], start being inclusive and end being exclusive. Jun 18, 2024 · A map of patch file URL to its integrity value, they are applied after extracting the archive and before applying patch files from the `patches` attribute. In this article, we'll walk through the process of configuring our simple set of rules to use toolchains. unexported via the srcs attribute. This page covers how to build a program with Bazel, build command syntax, and target pattern syntax. This value has a dual purpose: Aug 13, 2024 · Send feedback Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4. 5 A collection of configuration fragments available in the current rule implementation context. All repository_rules have the implicitly defined attribute name. This is useful for all kinds of things such as plugins, configuration files, certificates and keys, and resources. bazel help startup_options Options for the JVM hosting Bazel. label. Note: Prior to Bazel 6. This is a dependency attribute. In addition, the dict contains entries for the rule instance's name and kind (for example, 'cc_binary'). x, the previous LTS release. However, it allows Bazel to skip decompression when writing the output file, which can be memory-intensive. Jan 19, 2022 · Bazel 5. By default, it uses the Bazel-native patch implementation which doesn't support fuzz match and binary patch, but Bazel will fall back to use patch command line tool if `patch_tool` attribute is specified or there are arguments other than `-p` in `patch_args` attribute. label and attr. For additional information, please refer to the documentation. Typically there is one output base per workspace - however, with this option you may have multiple output bases per workspace and thereby run multiple builds for the same client on the same machine concurrently. # contents of a file you create named: copy_filegroups. executable) exec_rule1 = rule( implementation = _impl1, executable = True, ) def _impl2(ctx Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. Output: bazel build // The struct fields correspond to the attribute names. 1). If an incoming edge transition on --foo reads attribute bar and then also selects on --foo to set attribute bar, then there’s a chance for the incoming edge transition to read the wrong value of bar in the transition. Files needed by this rule at runtime. extract(repository_ctx. artifact be usable enough Aug 13, 2024 · attr_aspects is a list of rule attributes along which the aspect propagates. 0. 5 Representation of a definition of an attribute. Aug 13, 2024 · This behavior is fixed when --incompatible_fix_package_group_reporoot_syntax is enabled, which is the default after Bazel 6. 3. I've checked version 0. build_file)) test_archive = repository_rule( attrs = { "src": attr. 22. The default outputs and runfiles of targets in the data attribute should appear in the *. Keep in mind that when Nov 9, 2019 · Much like regular rules, you can define a repository rule by calling a special function ( repository_rule) and providing an implementation function and a number of attributes. bazel. The following example restricts win_driver_lib. Examples C++ auto-configured toolchain : it uses a repo rule to automatically create the C++ configuration files for Bazel by looking for the local C++ compiler, the environment and . 1 · 7. Aug 13, 2024 · Use the target_compatible_with attribute to tell Bazel what target platform constraints your code has. Getting more help: bazel help <command> Prints help and options for <command>. outputs. extract does all the heavy lifting. 1 5. Aug 13, 2024 · Bug warning: This attribute sets the version for which Bazel builds your target, but due to #4815, the resulting stub script may still invoke the wrong interpreter version at runtime. Prerequisites Configurable build attributes. Oct 13, 2017 · Given a rule with an attribute defined by attr. Source files are listed in the srcs attribute. A struct to access the values of the attributes. Ensure that explicit attribute values are passed through to aspect implementation function: see SkylarkAspectFactory. Configuration conditions. 0 def _copy_filegroup_impl(ctx): all_input_files = [ f for t in ctx. May list file or rule targets. These objects are used as the values of the attrs dictionary argument of rule() and aspect(). string_list_dict(), I'd expect the following two stanzas to be equivalent: foo(my_attr = {"hello": ["world\ Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. Jul 11, 2024 · Attribute attr. Each key in a configurable attribute is a label reference to a config_setting target. Aspect implementation Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. Description of the problem / feature request: attr. bazel help info-keys Displays a list of keys used by the info command. 0 6. . There are two special kinds of attributes: Dependency attributes, such as attr. Some of the common types an attribute can have are integer, label, list of labels, string, list of strings, output label, list of output labels. Mar 23, 2022 · I am trying to get shell commands to work with bazel (v4. If an incoming edge transition on --foo reads attribute bar and then also selects on --foo to set attribute bar, then there's a chance for the incoming edge transition to read the wrong value of bar in the transition. Perhaps it would be better to be able to specify a dict with kind-> attr mapping. So the attributes are global for that one apply. 2. Is there any flag/option to disable this feature. files)[0] Aug 13, 2024 · Report an issue open_in_new View source open_in_new Nightly · 7. In one of the fields, I'm using a attr. label, or attr. Jul 11, 2024 · The result contains an entry for each attribute, with the exception of private ones (whose names do not start with a letter) and a few unrepresentable legacy attribute types. Stage 1 is impemented. See the Rules page for more on defining and using attributes. Is there a bazel query function that can pick out the contents of specific attributes of BUILD rules? About Bazel Getting started User guide Reference Extending Community Versions 7. In this case, the aspect will propagate along the deps attribute of the rules that it is applied to. The file does not need to be named BUILD, but can be. There are multiple ways to solve this like using the includes attribute of cc_binary, but here we will solve it at the toolchain level with the cxx_builtin_include_directories parameter of cc_common. However, visibility() does not accept negative package When a rule declares an attribute that uses an aspect such as attr. cclnludefmbvyvuxuvovfmxdrzwmhcjdhdiuditamawqaylnwvwwhvur
Bazel attr. Source files are listed in the srcs attribute.