Bazel vs cmake reddit

Bazel vs cmake reddit. ) Personally I really like using Rake for my build scripting, though all it's really doing is calling MSBuild (and MSDeploy). 33. edit 1: some might argue it's the best avaiable solution to the problem domain, and it is. Yes, even better then cmake. The folder structure looks like this: BazelCmake. Next, the most used build tool at this time, namely Make, is discussed in more details, together with CMake. This is an area where cmake is clearly better. In Bazel, the software is built from source code that is organized in a directory tree called a workspace. In the question “What are the best open-source build systems for C/C++?”. CLion is a better IDE for C++, but is complex, slow, buggy, and has a steeper learning curve and lots of sharp edges. To start understanding what Bazel is and does, we need to know what build systems are. For example, in most projects, all variables are global; function results are communicated by global variables; referencing non-existing variables is not an error; looking up Pragmatic choice: vcpkg or Conan (they work today and are complete enough) Pragmatic no-brainer choice: vcpkg (it's the simplest and it have more packages ready) Pragmatic but need finer control choice: Conan (it gives more options) (Very) Long term choice: Build2 (show great promises because it uses a coherent model, but it's not considered Apart from that, using cmake over makefile has all the same benefits in a non-embedded app. Then just do find_package in CMake. It's not just you. Currently there are a lot of build systems in use, too many to cover all. There are also modules for performing tests such as “does this header file exist”, and “does this compiler support this feature”, so you can generate configuration CMake supports ExternalProject_Add and IMPORTED libraries, which seems superior to the similar method in the last XMake example of the "Custom script" section, but I have no idea if that's the idiomatic XMake way to clone a git projects. Configuration Files: CMake uses "CMakeLists. This prevents source code getting polluted with build related artifacts like object files. It's a cross-platform tool. In contrast, Make is better suited for smaller projects with fewer dependencies and simpler build requirements. If you read the readme OP makes it very clear he is only changing the syntax of the language, not anything else about how CMake works. Aug 1, 2021 · A triplet file is a CMake file containing information about the host architecture and points to a CMake toolchain file. You signed out in another tab or window. Do use meson. You can make things work either way, e. In WORKSPACE. However, this is a software project I’ve had at hand Just using local Bazel is plenty fast for most projects, particularly if the components are well factored out. I saw an issue on gradle recently talking about better ways to handle native dependencies and someone was demoing the example of using conan. tup/mnt/@tupjob-XXXXX) as the working directory in order to monitor reads/writes, enforcing the build configuration. It's designed quite differently from Bazel, with more of a focus towards being cross-platform (remember, Bazel didn't even work on Windows for a long time) and fast (this is Chromium, after all). Create a folder named build and cd into it. The Source folder looks like this: Source. I wrote a simple arm-none-eabi-gcc Bazel toolchain for embedded projects. d file, with the same basename as the . Looks easier than conan. I still cannot comprehend how come cmake, the most popular C++ build system of 2018, is so bad. Mar 8, 2018 · 8/10. e. When you compile a binary, the symbol path is stored in the binary itself. Run cmake -G "Visual Studio 14 2015 Win64" . bazel-diff is also super useful for only building exactly what's changed. This process is only as painful as you want to make it for yourself. killchain. vcd files generated by Bazel targets. It’s not difficult per se. CLion has other issues. CMake is a program that generates makefiles. CMake is a hell of a software, period. It then runs all of the build programs in a folder (i. 共同点：给用户暴露的编译对象都是target，以及对应的各种编译属性。. To add dependencies with vcpkg, cmake-init --vcpkg mydep1 -s, edit the generated files and add a vcpkg preset in the preset files. If no CMakeLists. txt so userscan do a CMake-based build. Use a package manager like vcpkg or conan to install/manage dependencies. json ever. The escaping to pass in a string was interesting, but this works: The final step would be to read the version string from Maven, cmake and Bazel all allow you to handle your dependencies. You can see an example of this here. Get it here. We talked about this a little bit earlier. Modern CMake优点：. Feb 5, 2018 · Step 1 to Adopting Bazel: Boil the Ocean. All you really need to know is "everything is a string". We have a medium-sized codebase, probably a bit small for Bazel’s ‘sweet spot’. Those builds that use CMake generally just work everywhere or can be amended easily. It looks like its both a build system and a package manager. txt. ) take over than CMake. bazel. Also, I'd avoid Bazel just for the huuuge Java dependency, but also because Google might kill it any day. I created the Build folder where i will be putting the build files. Most companies for which you would have the choice between Developers who began with other languages and then picked up C++ are (as in my opinion) horrified with CMake, for pretty easily articulatable reasons. 18 6. Everything else is just trouble apart from some specific platforms where development obviously happens. ADMIN MOD. Script it however you want it. I have not tested VS Code. This, and a broad comparison of characteristics of build systems, will be explained in the first chapter. Gradle for java is already an immensely powerful build system especially for embedded Once you add to CXXFLAGS -MMD (emit dependencies for non system header files) -MP (emit dummy rules for headers so you can delete a header without pain), it will write out a . Start with installing all you need via package manager. The Bazel languages are much more similar to Python than Gradle is to anything else I've Regarding option 1 (+ your edit), you are correct about Visual Studio and the Folder View not allowing to see the parent folder. F*** the weird syntax and werid structures. bazel, we instantiate a cmake rule which behaves similarly to a cc_library, which can then be used in a C++ rule ( cc_binary in this case). Make is simple yet powerful, but the documentation is only good for reference, if not. If you want to promote a library or something, explain what it is for fuck sake. In fact, whilst Here are the key differences between Bazel and CMake: Build Language and Configuration: Bazel uses a custom domain-specific language (DSL) called Starlark for defining build rules, while CMake relies on a script-based configuration language using CMakeLists. The major benefit of CMake over VS is separating the build system, intermediaries, and output files from the rest of your code. That said it’s very new and you will need to invest a whole lot of time before you reap the benefits. On the plus side, some programmer support solutions unavailable in other IDEs. This means that CMake scripts are written in a C-like syntax, while SCons scripts use Python syntax. Readable configuration language: Bazel uses Starlark as its build language, which is a subset of Python and a lot easier to read and write than CMake scripts. the transformation rules are the shell/batch commands you're used to and make sense. Supported build tasks include running compilers and linkers to produce executable programs and libraries, and assembling deployable packages for Android, iOS and other target environments. json and launch. Using Skylark basically just means choosing to use python syntax, it doesn't say anything about the API that is made available to users for . Great, thanks. CLion is the most resource intensive IDE (java is crap). Having recently made a Debian package of TensorFlow 1. For one, they provide sane syntax, and uniform way to describe your targets, deps, etc. CMake is a program that generates makefiles for you and compiles your code based off those makefiles lists. CMake, when used properly, is extremely standardised. For more information, check out the documentation of Vcpkg triplet It's not much different from a package maintainer's work, but integrates with CMake much nicer in many ways (being able to link to targets vs adding include_directories, linking to libraries, etc. Of course, part of that is simply because it's widely used, but that's a valid practical argument in its favor. Secondly, many popular libraries which don't have a CMake build are either header-only or have a single (or a few) source file, so writing a simple Modern CMake vs Bazel. The trick is that failing to add the dependencies properly in cmake, in my experience, just resulted in the project failing to recognize a need to recompile when the code it used, but didn't have listed as dependencies, got updated. *=+no-remote-cache. It works fine in CMake itself. Personally, I use Docker. I have looked into tools such as distcc and icecc but none of these seem to support Windows. Hello all, I am looking for a way to distribute C++ builds across multiple local machines running Windows. Second, it sets up your libraries and really any dependencies including other code bases in a much more modular way. Jun 28, 2016 · Bazel does not have the issues mentioned in that post, i. If I had a mono-repo with several million lines of code in it, I’d want a consistent way to build things and a fast way to get feedback on those changes. SCons is a framework for constructing your own special one-off build system. For sanely structured projects it's also not too hard to learn (though still annoying as fuck). CMake is the system that will build your actual build system as described. Let me know what you think of Bazel if you try it! Trunk Merge - Parallel Queues. Conan is not a build system. or similar. If you really know Make, I doubt you like it. BrightLie651. the problem is the syntax, the unintiutive way of specifiying With CMake, the compiler flags and build system are generated for you, and so you can use Visual Studio, NMake, Make, Ninja, Android. 更加简单，易于修改和维护 Mar 23, 2023 · Bazel is a tool that automates software builds and tests. Scalable: Bazel helps you scale your organization, codebase, and continuous integration solution. • 7 mo. Bazel doesn't allow even trying to compile. : (We do not recommend using GLOB to collect a list of source files from your source tree. Jan 27, 2023 · Visual Studio (VS) Code; Bazel 5. We take advantage of cmake to easily. OOTP 22 League with Three Openings. it is compiled from C to target (object, preprocessor only, x86, ARM, ppc, ). Reload to refresh your session. I also looked into Bazel but there doesn't seem to be a way to distribute to local machines instead of the cloud. BUT it has better documentation and it can output different things for different build systems on different operating systems. CMake is very opaque, the scripting language is weird, good examples are hard to come by, the documentation is often lacking, and conceptually, it's hard to wrap your head around exactly what it's doing. Ninja is ranked 1st while Bazel is ranked 8th. Does anyone have any ideas? But I'd rather not modify the code too much to make it work. My game stats and game insights from first game ever, mid September (top, and left). There are two main CMake extentions for VSCode one is language support for CMake and the other integrates CMake and based on your CMakeLists. This project converts Bazel BUILD and WORKSPACE files toCMakeLists. When comparing Bazel and ninja you can also consider the following projects: Buck - A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages. Feb 22, 2021 · Recently, we have migrated from CMake to Meson, and in the rest of this blogpost I want to tell the story of how we got to this decision and what we got out of it. The language for CMake has some of the worst syntax, in my opinion, ever created. Conan is solely a C/C++ package manager, although it provides interfaces to common build tools such as CMake (this seems to be popular pairing). 1. Bazel can automatically detect LLVM installation on your system, or you can explicitly tell Bazel where LLVM is installed by BAZEL_LLVM. For my local development server, I used cmake install to install nanomsg (to /usr/local) and accessed the header files from their installed location. Move up one folder. Minimal builds. A frame of reference for this is your C source code. I don't think cmake can propagate that requirement downstream from the consumer to the dependency though, so there's that. The first step of creating the calculator app is to create the proper folder structure in VS Code. That could be Makefiles, Visual Studio solutions, Ninja files, KDevelop project files, If the project is set up to utilize CMake, you should have no need to even look at the buildfiles (Makefiles You signed in with another tab or window. The main reason for migrating our build system, is that I wanted to prevent the scenario where some parts of the codebase, of which you actually know that those are a bit messy (in Sep 28, 2022 · I am trying to build a CMake project using Bazel. Bazel is super fast, repeatable, and adds great features like incremental building. cpp. Or buck. It’s unintuitive, the syntax is horrible and is badly documented. For your personal projects I suggest giving Meson a try, it's much nicer to work with. Building a CMake library within a Bazel project. My VS solution is fairly simple: One project that builds a static library, and one project for unit tests. CMake is an abstraction and will generate the makefile for you (or even better, use "Ninja" as the generator). I'm currently working in a project where I need to migrate a C++, Cmake codebase to Bazel based build , so How do I start Migrating things bit by bit, I thought like start migrating a small module to bazel and make the Cmake to call it . Bazel runs on Windows, macOS, and Linux. We just use special purpose tools to fit our special purpose needs. Yes, git and cmake are still the de-facto standard. json file or setup tasks. 7. It handles codebases of any size, in multiple repositories or a huge monorepo. To enable the Clang toolchain for building C++, there are several situations. VS for some reason still mixes the two. Meson. g. rules_symbiyosys - Bazel rules for the formal verification tool Symbiyosys . As a fun fact, TensorFlow is setup with Bazel such that they require you to build your project from within TF's source code, with Bazel. 在处理大型C++项目的依赖关系时，都很方便。. . You could call it a meta build-file generator since it is creating those build-files. So essentially, once you have written a CMake toolchain file for your cross-compilation, you basically point Vcpkg to the toolchain file in the triplet file. with symbols). CCI serves everyone, not just CMake users. I install everything (CMake, other C++ and non-C++ dependencies/tools) in there and then use VS Code to connect to it. CMake is more complex and outputs horrible make files. Using CMake with modern best practices honestly isn't that bad. 9 (w/ CUDA and the C/C++/Python API) for Pop!_OS, I can concur that Bazel is among worst build systems that I've ever seen. r/MorganaMains. I've written a module on top of a private fork off of TensorFlow that uses nanomsg. •. Integrating an external library which also works with the same tool. CMake, meson and autotools have the build mostly automated. Should probably go in a general web dev subreddit. automatically run units tests when building, perform post-processing steps (e. ) Bazel will always notice if anything was added Sep 14, 2017 · CMake is also able to generate Ninja files among other formats, check CMake generators documentation for more information. nx - Smart Monorepos · Fast CI. CMake. Dec 8, 2020 · Unlike Make, CMake’s two stage build process lets the programmer work with platform’s debugging tools if necessary. Both qmake and CMake generate a Makefile, which is read by make to build the project. o file it's written. Here are some benefits you can expect: Parallel PR Testing/Merging: Dynamic queues allow simultaneous merging of related PRs across different code areas, avoiding delays from unrelated PRs. 0; Python 3. [. Parallel mode in Trunk Merge. Both are build systems, but they're not very similar at all. The flip side of this is that to adopt Bazel, we need to give it a total description of our build Apr 27, 2017 · 2. 7 comments. 7; Creating the Folder Structure. Cmake creates things like a Makefile and . When comparing Ninja vs Bazel, the Slant community recommends Ninja for most people. However, Bazel has a steep learning curve, especially when using a cross compiler for embedded applications . There are a ton of other differences between CMake and bazel. You should learn some CMake because unfortunately it's the de-facto standard and you're bound to come across it. and my most recent game (bottom and right). While cmake/make/ninja support incremental builds based on disk caching, Bazel supports first-class remote caching, where (typically) the CI generates the cacheable objects. Using cmake and the settings in CMakeLists. On the other hand, SCons uses a "SConstruct" file, which is a build configuration file written in The example for Windows is below, in the section 'Usage on Windows'. And it is unreasonable to compare a package manager that deals with any build system with one that only deals with one build system. Hence, this benchmark is arguably a bit skewed. CMake is a meta-buildsystem. In our CI, it's been far slower to pull the Go standard library from the cache than it is to rebuild it. In practice, Buck2 (and Bazel) build files and rules are written in Starlark which is a python dialect, so there's a sane programmatic syntax. js. All you need then is to include (wildcard *. FMWizard. bazel, we use a http_archive to download tarballs with the libraries we use. Each node, i. With cmake-init + vcpkg this becomes: cmake-init -s mylib. CMake is a meta build system. A similar thing happens with your CMakeLists. The idea is to make it easier for us embedded folks to get started with this new build system. Also, no need to search for "Modern CMake" and get out-of-date 5 year old results either. Trusted by industry leaders. 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. meson - The Meson Build System. The Source folder looks like this: Build Systems: Bazel vs Make Introduction. And yes, it has its own scripting language used to write the files. ). It can be extremely difficult for others to use and modify as a result--knowledge gained from other SCons-based projects may well not carry over. The problem is that I don't know CMake, and have been quite intimidated every time that I have looked into learning it. It works well, unless the path is stored absolutely (i. It does work in CMake Targets View, but then there are other issues (for example: modifying a parent CMakeLists. set (x, "a;b;c") -- this looks like a string but is actually a list of strings. It can handle small and medium sized code bases, but fails with large projects - high CPU usage, clipping interface, slow syntax hinting. Every C++ library under the sun can be built with CMake and therefore integrated into your project's own CMake build system. But, as a fully-fledged programming tool (Ruby language) it can make for a very powerful scripting agent. elfs -> bin/hex, generate releases). bazel, put. In principle CMake could output Buck2, or Bazel files (since they're pretty much the same at the moment). The main drawback with Meson is momentum. You switched accounts on another tab or window. Create a project folder with a simple CMakeLists. My experience is with MSBuild with Visual Studio for all of my personal projects, and Bazel at work. victotronics • 2 yr. Scalability: Bazel is designed to handle large-scale projects with thousands of code files and extensive dependencies. Sep 28, 2022 · I am trying to build a CMake project using Bazel. r/cpp. Bazel is similar to other tools like Make, Ant, Gradle, Buck, Pants and Maven. Lately I have been dabbling in verilog / FPGAs and as part of that I wrote some Bazel rules: rules_verilog - various utilities like a verilog module definition with dependencies as well as a GtkWave wrapper that automates viewing . Build systems have a number of features on which they can be compared: Static and/or dynamic dependencies. Use the Bazel Open Source Project to scalably build and test massive, multi-language, multi-platform codebases. mk, XCode, etc. This code base in particular made heavy use of Eigen included as an external dependency and CMake spent some time configuring this header-only library. We have a large monorepo in many languages with interdependencies which is the perfect use case for Bazel, but every time we have tried to migrate to Bazel we have failed. (cmake, NAnt, etc. 2) and CMake (3. You can host your own Artifactory instance and only support CMake clients with its packages. Hey, we just launched something for the Bazel community. 14 upvotes · 6 comments. Remote caching and incremental builds. helloiamsomeone. txt does not run cmake). Anything better than CMAKE. I'd rather see these systems (buck, pants, bazel, pleasebuild, gn, etc. The project runs fine locally. Dec 19, 2015 · 5 Answers. Not all build systems generate a Makefile, but many do. Run cmake --build build --target INSTALL --config Release if you want to compile from the command line. And with Bazel you have to learn two different subsets of Python, and also the query language. d) (or something like that). . Build. To some extent, their priorities are incompatible - Gradle’s desire for flexibility and non-obtrusiveness limits the restrictions it can place on build structure, while Bazel's desire for reliability and performance necessarily enforces non-negotiable restrictions. ] Bazel is the tool for that job. You can also just open the solution that is now in build. The impenetrable wall we always hit is with the CLion/IntelliJ plugin which is simply broken, and you can't easily debug it because it is built with Bazel itself. "dds is the Drop-Dead-Simple build and library management tool. CMakeLists nysra. node-gyp. It's definitely better than writing your own custom script. txt, CMake will generate the build files for the target platform. Rather than focusing on IDE support like CMake does, Bazel's strength is building more quickly and guaranteeing reproducibility of builds - for example, Bazel requires all inputs to be explicitly specified. Oct 10, 2019 · Global comparison of multiple build systems. It provides a scalable and incremental build system, making it suitable for complex software development. BazelCmake is the parent folder and Source subfolder contains the source files. the syntax is a bit of an issue too they might learn a thing or two from meson. Jan 11, 2024 · my subreddits. Hot take: if gradle adds offical conan support itll be the best build system for c++. CMake is more generic, and fits pretty much any type of project. The buildsystem-independent standard is pkg-config, which cmake tries to hide. But, forgetting all the reasons why Google made it, having one set of tools that compiles and deploys all your code to any A Makefile represents a directed acyclic graph. The Bazel BUILD file serves as your source oftruth, and this tool generates an idiomatic CMakeLists. NET specific subreddit. Installation can be as simple as $ pip install conan. It also offers much better guarantees of reproducibility than what you could do by yourself. MembersOnline. txt" files to define the project structure and build process, organizing targets and dependencies. ? is that a good idea, or anyone have any suggestion . BAZEL_LLVM the LLVM installation directory. WORKSPACE. 开源社区非常成熟，遇到问题时，可获取的线上资源 (stackoverflow等)很丰富。. set BAZEL_LLVM=C:\Program Files\LLVM. Apr 10, 2012 · 1. 7. 19). Jul 20, 2022 · Below are the various features of Bazel, compared to cmake/make. Build2 seems to have the right idea. Interesting idea, but that C# project is atrocious and makes it look like this post doesn’t belong in a . Make traverses the graph executing the rules in topological order. I suppose all you really need is MSBuild and the codebase. Users of your library will expect CMake build files as well. Build graph inspection tools: commands like query and cquery allow you list the transitive deps of each target, see why one target depends on another, and a lot more. MOD. Conan is tightly integrated with official and community repositories which house popular packages. bazelrc file: build --modify_execution_info='GoStdlib. ago. Or bazel. Source. Only issues are lack of libraries (right now there is only 250 libraries available), and IDEs not having an official 'Build2 project' option yet. Each node has inputs and outputs and a rule to transform inputs to outputs. Mar 11, 2021 · This means that it’s designed to have its input files generated by a higher-level build system (not manually written), so integrates easily with the backend of CMake and others. Really CMake is good only for one thing being the sacred build generator system in the c/cpp world. Go to cpp. Think about it like this. 10. Bazel's declarative approach describes file relationships, dependencies, and GN has been around for several years and was designed to replace Chromium's original build system, Gyp. BUILD. Each has its issues, and right now, I think Bazel is better than any of them for us. the CCI packages doctest and Catch2 are both include()able as documented upstream. In particular, the "add_compile_definitions" was seen as an improvement over a "configure_file", which is essentially the same as a Bazel genrule). Or scons. popular-all-random-usersAskReddit-pics-funny-gaming-mildlyinteresting-worldnews-movies-explainlikeimfive-todayilearned-news-videos-DIY-dataisbeautiful Read about the different keywords / flags needed and make a skeleton makefile for when you need to compile a list of . 10. A makefile is basically just a bash script, except a bit better designed for the building process. Syntax. If your project uses Qt, you're probably best off using qmake. download external dependencies if needed, As a tip, with Go; add the following line to your . It has a big advantage over Meson, it is mature and widely used in many projects, which means there are many examples and it will fulfill your C++ project building needs. And though I've experimented with other champions, I'm a firm Morgana main. ? So, Yocto can still solve your problems, as It has a huge base of recipes for common software as well as build systems. In BUILD. The list includes: Make, Ninja, Gradle, Maven, SCons, Bazel, Shake, . VSCode is going to be more performant, flexible, easy to understand, and generally reliable, but isn't optimized for C++, and has a pretty poor overall IDE experience. During the CMake build process it is customary to create a folder named `build` that keeps all the build artifacts. That's true, but I found the learning curve for Bazel to be less than Gradle. Apr 16, 2021 · For testing I’ve used the most recent versions of both Bazel (3. So, basically it's 2 lines of Make to CMake. Mar 25, 2015 · Bazel and Gradle emphasize different aspects of the build experience. txt it sets the c/c++ extention confuguration and you never need to make or touch a c_cpp_properties. Extensible to your needs: Easily add support for new languages and platforms with Bazel's familiar extension language. We just ran a PoC to port over all our dev, build, and deploy tooling to run on Bazel, and so far it’s been an absolute dream. Building DotNet with Bazel. sln files, etc. txt files. txt file changes when a source is added or removed then the generated build system cannot know when to ask CMake to regenerate. Bazel needs to know all the inputs and outputs of rules. The syntax is garbage and whenever I manage to add a library to my project and it just works without having to dig through it's own cmake files to find the right targets, set the right parameters, read through pages of documentation and posts about other users having cmake "Bazel" was only released in 2015, though it's based on software Google has been using internally since much earlier. Make & Ninja are build systems. all with the same inputs. It certainly beats any other mechanism for dealing with building and managing dependencies in large C++ projects, in my experience. Add a Comment. I know it's the standard and yadayada but I am yet to perform a single task related to cmake that isn't absolute hell. 64_g • 3 yr. edit subscriptions. With cmake you set a property called POSITION_INDEPENDENT_CODE on your target and the build system figures out the correct flag at build time. tg ni io us ng fo ki rh hv ve