cmake-init-multi-target
meson
cmake-init-multi-target | meson | |
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1 | 111 | |
0 | 5,266 | |
- | 1.0% | |
1.8 | 9.8 | |
over 2 years ago | 3 days ago | |
CMake | Python | |
- | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
cmake-init-multi-target
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What do you struggle with the most in C++?
But also a lot of problems come from people not understanding that regardless of CMake and C++, how shared and static libraries work and why they work the way they work. For example, if your CMake project has multiple targets, one being the main export and another being just a "utilities" target of sorts, then you must do some extra work to make the main export target be installed properly when it is built as a static library. This has nothing to do with CMake or C++, but that fact that static libraries are "just" archives of object files that the linker will later roll into a "real" binary (shared library or executable). When you are creating a project you must account for propagating the "utility" target as well, because otherwise the consuming project will not get the code for the "utility" target that was linked to your main export PRIVATEly. I created an example repository on how to deal with this, because a Conan package maintainer was curious about why CMake was inserting $ genex into the installed export set.
meson
- Ask HN: How to handle user file uploads?
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Which Build Tool for a Bootstrappable Project?
[1]: https://github.com/mesonbuild/meson/issues/8153
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Building Waybar fails
The Meson build system Version: 1.2.3 Source dir: /home/patrik/workspace/Waybar Build dir: /home/patrik/workspace/Waybar/build Build type: native build Project name: waybar Project version: 0.9.24 C compiler for the host machine: cc (gcc 13.2.0 "cc (Debian 13.2.0-5) 13.2.0") C linker for the host machine: cc ld.bfd 2.41 C++ compiler for the host machine: c++ (gcc 13.2.0 "c++ (Debian 13.2.0-5) 13.2.0") C++ linker for the host machine: c++ ld.bfd 2.41 Host machine cpu family: x86_64 Host machine cpu: x86_64 Compiler for C++ supports link arguments -lc++fs: NO Compiler for C++ supports link arguments -lc++experimental: NO Compiler for C++ supports link arguments -lstdc++fs: YES Program git found: YES (/usr/bin/git) WARNING: You should add the boolean check kwarg to the run_command call. It currently defaults to false, but it will default to true in future releases of meson. See also: https://github.com/mesonbuild/meson/issues/9300 Has header "filesystem" : YES Checking if "nl_langinfo with _NL_TIME_WEEK_1STDAY, _NL_TIME_FIRST_WEEKDAY" : links: YES Run-time dependency threads found: YES Found pkg-config: /usr/bin/pkg-config (1.8.1) Run-time dependency fmt found: YES 9.1.0 Run-time dependency spdlog found: YES 1.12.0 Run-time dependency wayland-client found: YES 1.22.0 Run-time dependency wayland-cursor found: YES 1.22.0 Run-time dependency wayland-protocols found: YES 1.32 Run-time dependency gtkmm-3.0 found: YES 3.24.8 Run-time dependency dbusmenu-gtk3-0.4 found: YES 16.04.0 Run-time dependency gio-unix-2.0 found: YES 2.78.1 Run-time dependency jsoncpp found: YES 1.9.4 Run-time dependency sigc++-2.0 found: YES 2.12.1 Found CMake: /usr/bin/cmake (3.27.7) Run-time dependency libinotify found: NO (tried pkgconfig and cmake) Run-time dependency epoll-shim found: NO (tried pkgconfig and cmake) Run-time dependency libinput found: YES 1.23.0 Run-time dependency libnl-3.0 found: YES 3.7.0 Run-time dependency libnl-genl-3.0 found: YES 3.7.0 Run-time dependency upower-glib found: YES 1.90.2 Run-time dependency libpipewire-0.3 found: YES 0.3.85 Run-time dependency playerctl found: YES 2.4.1 Run-time dependency libpulse found: YES 16.1 Run-time dependency libudev found: YES 252 Run-time dependency libevdev found: YES 1.13.1 Run-time dependency libmpdclient found: YES 2.20 Run-time dependency xkbregistry found: YES 1.6.0 Run-time dependency jack found: YES 0.126.0 Run-time dependency wireplumber-0.4 found: YES 0.4.15 Library sndio found: YES Checking for function "sioctl_open" with dependency -lsndio: YES Run-time dependency gtk-layer-shell-0 found: YES 0.8.1 Run-time dependency systemd found: YES 252 Computing int of "__cpp_lib_chrono" : 201611 Configuring waybar.service using configuration Run-time dependency cava found: NO (tried pkgconfig and cmake) Looking for a fallback subproject for the dependency cava Executing subproject cava cava| Project name: cava cava| Project version: 0.9.1 cava| C compiler for the host machine: cc (gcc 13.2.0 "cc (Debian 13.2.0-5) 13.2.0") cava| C linker for the host machine: cc ld.bfd 2.41 cava| Has header "iniparser.h" : NO cava| Has header "iniparser4/iniparser.h" : NO Message: cava is not found. Building waybar without cava subprojects/cava-0.9.1/meson.build:65:3: ERROR: Problem encountered: iniparser library is required A full log can be found at /home/patrik/workspace/Waybar/build/meson-logs/meson-log.txt WARNING: Running the setup command as `meson [options]` instead of `meson setup [options]` is ambiguous and deprecated.
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How to find a list of all gcc errors/warnings?
As it happens, I recently landed a PR in meson to add a clang-like Weverything mode that includes all of that, so you can get a minimal list of more or less all GCC warnings, organized by version, from the meson source here: https://github.com/mesonbuild/meson/blob/710a753c78077220b13a9f7e999dcdb61339efb1/mesonbuild/compilers/mixins/gnu.py
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Makefile Tutorial
Came here to post the same. The answer for How to build software? is Meson[1] for C and C++ and also other languages. Works well on Windows and Mac, too.
I’ve written a small Makefile to learn the basic and backgrounds. Make is fine. But the next high-level would have been Autotools, which is an intimidating and weird set of tools. Most new stuff written in C/C++ use now Meson and it feels sane.
[1] https://mesonbuild.com
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CMake x make?
If you are very fortunate, you'll be able to choose something else. I like meson myself: it looks a bit like python, it's popular, small, simple, well-documented, easy to install and update, and it works well everywhere.
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C++ Papercuts
I suggest changing the build tool. Meson improved C and C++ a lot:
https://mesonbuild.com/
The dependency declaration and auto-detection is nice. But the hidden extra is WrapDB, built-in package management (if wanted):
https://mesonbuild.com/Wrap-dependency-system-manual.html
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A Modern C Development Environment
> C's only REAL problem (in my opinion) which is the lack of dependency management. Most everything else can be done with a makefile and a half decent editor.
Care to hear about our lord and saviour Meson?
Both of your quoted problems are mutually incompatible: dependency management isn't the job of the compiler, it's a job for the build or host system. If you want to keep writing makefiles, be prepared to write your own `wget` and `git` invocations to download subprojects.
Meanwhile, Meson solves the dependency management problem in a way that makes both developers and system integrators/distributions happy. It forces you to make a project that doesn't have broken inter-file or header dependency chains and cleans up all the clutter and cruft of a makefile written for any non-trivial project, while making it trivial to integrate other meson projects into your build, let other people integrate your project into theirs, and provides all of the toggles and environment variables distribution developers need to package your library properly. You can really have your cake and eat it too.
https://mesonbuild.com/
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cgen: another declarative CMake configuration generator
Other people going down this route seem to end up writing cmake replacements instead. I'm thinking of something like meson here except that meson never intended to transpile to cmake.
- Makefile vs Cmake - Objective comparison ?
What are some alternatives?
fastbuild - High performance build system for Windows, OSX and Linux. Supporting caching, network distribution and more.
CMake - Mirror of CMake upstream repository
tensorflow - An Open Source Machine Learning Framework for Everyone
ninja - a small build system with a focus on speed
xmake - 🔥 A cross-platform build utility based on Lua
SCons
cmake-init - The missing CMake project initializer
Bazel - a fast, scalable, multi-language and extensible build system
BitBake - The official bitbake Git is at https://git.openembedded.org/bitbake/. Do not open issues or file pull requests here.
conan - Conan - The open-source C and C++ package manager