Meson dependencies. Dependency management in Meson.

Meson dependencies Contribute to mesonbuild/meson development by creating an account on GitHub. if the same name was used in a meson. 60. cmake modules and exported project configurations (usually in /usr/lib/cmake). Tutorial. You can omit either of the two directories, and Meson will substitute the current directory and autodetect what you mean. For those who are into open source C/C++ projects, Meson is not new. NOTE: This was not implemented for dep objects returned by compiler. My dependency graph looks like this: src/abc/meson. Typically, meson. This mechanism assumes the subproject calls meson. 8') lib_b = shared_library('proj_b', sources: 'prog_b. 0', foo_dep) so Meson knows which dependency object should be used as fallback. compiler; Ninja; pip install ninja でも OK. Projects like GNOME and Systemd have migrated to Meson, and migrating software to Meson seems to still be a trendy thing to do. build (1) ├── meson_options. The install argument tells Meson to install the result. 1. Fortunately, if Meson used CMake to find the dependency, you may be able to get the library path from the underlying CMake variables, which are available in the Meson dependency object. It is usually enough to just use the dependency object returned by the dependency() method in the build targets. 必須. build defines a static library bar; vendor/foo/meson. Its value is glib_dep which we set at the top level meson. a_dep = dependency('a', version : '>=1. You signed out in another tab or window. dependency and option in meson project. Reload to refresh your session. Jul 10, 2021 · Because meson fails at the first missing dependency, I had to redo this over and over to get install the entire list of dependencies that will be looked for using pkg-config. get_pkgconfig_variable]] function. Dependency management in Meson. If you then use this subproject in your build, Meson will automatically download and extract it during build. How to forward dependencies in Meson? 0. find_library() until Meson 1. When A and B are in the same meson project, it's a little uglier. Since this library uses GLib, we tell Meson to add all necessary compiler and linker flags with the dependencies keyword argument. Meson is a powerful build system that provides efficient dependency management and graph optimization. 0. Here is how one would use the zlib compression library. Since that method was introduced in version 0. Aug 5, 2019 · Meson isn't a dependency solver. Meson makes it very easy to find and use external dependencies. Oct 30, 2017 · The main use case for this [declare_dependency()] is in subprojects. And, in projects with multiple git submodules, this becomes a lengthy process. Jul 7, 2019 · You signed in with another tab or window. Returns the name of the dependency that was searched. In the rest of this document we are going to use the latter form. txt This option may be overridden by --force-fallback-for for specific dependencies. Eg, something along the following lines worked for me: meson setup <source directory> <build directory> Depending on how you obtained Meson the command might also be called meson. md └── src └── mysub ├── meson. 0 Nov 18, 2021 · I have a project with a similar folder trees: ├── meson. This is the root page of the online Meson reference manual. However, if you want to build gnome applications, there is The Newcomers Guide. override_dependency will have been used by a subproject. Meson also allows one to get variables that are defined in a pkg-config file. The dependency detector works with all libraries that provide a pkg-config file. You tell meson about your dependency by letting pkgconfig know about your dependency and that can be done by adding your dependency's path to the PKG_CONFIG_PATH environment variable; it is delimited by colons, just like PATH , e. 54. dependency 解決は2段構え. fallback specifies a subproject fallback to use in case the dependency is not found in the system. Meson has autodetection support for some of . An install stage (meson install) to install the installable files from the source and build directories to the target install directory, Meson has a good build dependency tracking system, so invoking a build for a second time will rebuild only targets for which any sources or dependencies have changed. g. native if set to true, causes Meson to find the dependency on the build machine system rather than the host system (i. pip install meson. So, No, meson doesn't take care that. To use this kind of a project as a dependency you could just copy and extract it inside your project's subprojects directory. build defines a static library def that depends on abc and foo; src/ghi/meson. override_dependency prior to the call to dependency, the overriding dependency will be returned unconditionally; that is, the overriding dependency will be used independent of whether an external dependency is installed in the system. and [dependency()] finds an external dependency with pkg-config [or] library-specific fallback detection logic You can, instead, use find_library() provided by the compiler object and include_directories(). c', dependencies : a_dep) The version section in dependency is optional. That looks like this: Meson's Dependency Management and Graph Optimization # Meson is a powerful build system that provides efficient dependency management and graph optimization. Meson has a very simple notational shorthand for enabling thread support on your build targets. You have to declare a dependency anchor in A. build (2) └── mesonTest. You can pass the opt_dep variable to target construction functions whether the actual dependency was found or not. Meson will not look at the system for any dependencies which have subproject fallbacks available, and will only use subprojects for them. This is useful when you want to test your fallback setup, or want to specifically build against the You can pass the opt_dep variable to target construction functions whether the actual dependency was found or not. This post will dive into the details of how Meson handles dependencies and demonstrates the optimization process through example code snippets. This is almost identical to using the declare_dependency() object from a normal Meson subproject. build defines a static library foo The Meson Build System. This page shows from the ground up how to create a Meson build definition for a simple project. 0 , as a transitional aid for projects that do not yet make use of it the variable name can be provided in the wrap file with entries in the Jul 29, 2021 · Selecting a Meson dependency as another Meson project. txt ├── README. e. c the meson. Unfortunately several packages don't provide pkg-config files. Returns 'internal' for dependencies created with declare_dependency(). The version keyword is optional and specifies a version requirement for the dependency. To learn more about Meson# The Meson Build System. dependency('hoge') もしくは subproject('hoge') で依存 Reference manual. However there is a simpler way. build defines a static library ghi that depends on bar; vendor/bar/meson. override_dependency('foo-1. First you obtain the thread dependency object like this: thread_dep May 8, 2020 · The centerpiece to it all is build system called Meson. Meson automatically detects CMake build targets, which can be accessed with the methods listed below. Then we expand it to use external dependencies to show how easily they can be integrated into your project. This manual is also available in a more machine readable format as a JSON documented attached to every release since 0. --wrap-mode=forcefallback. Oct 22, 2019 · このようにMesonのWrap dependency systemを使うと、システムにインストールされていない依存先を準備してビルドできるようにしてくれます。インストールされている場合はインストールされているものを使ってくれます。便利ですね。 Oct 8, 2021 · It can be frustrating trying to get this sort of info out of Meson. Meson is able to use both the old-style <NAME>_LIBRARIES variables as well as imported targets. This can be done by using the [[dep. build file. You switched accounts on another tab or window. 2. 5. where the cross compiled binary will run on), usually only needed if you build a tool to be used during compilation. build defines a static library abc; src/def/meson. Meson can use the CMake find_package() function to detect dependencies with the builtin Find<NAME>. py instead of plain meson. You can specify a Wrap file that tells Meson how to download it for you. options. Meson will ignore non-found dependencies. /opt/foo:/opt/extra/baz . Here is how one would use the Zlib compression library. When A is in the Same Meson Project as B. Then an executable is built using the specified dependency. First Meson is told to find the external library zlib and error out if it is not found. bhzr mxwgxl ksopcd phgb riaa akdwwsx eisvybl mmg fwsw djuhan

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