I noticed when building a project that uses a proc macro that Meson
passed -C prefer-dynamic for the executable, and not the proc macro,
while cargo passed -C prefer-dynamic for the proc macro, but not for
the executable. Meson's behavior broke setting -C panic=abort on the
executable.
As far as we can tell, because we explicitly pass each library path to
rustc, the only thing -C prefer-dynamic affects in Meson is how the
standard libraries are linked. Generally, one does not want the
standard libraries to be dynamically linked, because if the Rust
compiler is ever updated, anything linked against the old standard
libraries will likely break, due to the lack of a stable Rust ABI.
Therefore, I've reorganised Meson's behavior around the principle that
the standard libraries should only be dynamically linked when Rust
dynamic linking has already been opted into in some other way. The
details of how this manifests are now explained in the documentation.
This is a side effect of requiring Python >= 3.7 which itself guarantees
dictionary order. This is now a Meson language guarantee as well which
is required for passing default_options as dict and is generally
expected by users.
The new splitlines method on str is intended to replace usage of
fs.read('whatever').strip().split('\n').
The problem with the .strip().split() approach is that it doesn't have a
way to represent empty lists (an empty string becomes a list with one
empty string, not an empty list), and it doesn't handle Windows-style
line endings.
This is a pretty common pattern in python (the standard library uses it
a ton): A class is created, with a single private instance in the
module, and then it's methods are exposed as public API. This removes
the need for the global statement, and is generally a little easier to
reason about thanks to encapsulation.
Allow the use of wildcards (e.g. *) to match test names in `meson test`.
Raise an error is given test name does not match any test.
Optimize the search by looping through the list of tests only once.
We silently dropped all integer values to install_mode since the
original implementation of doing this in KwargInfo, in commit
596c8d4af5.
This happened because install_mode is supposed to convert False
(exactly) to None, and otherwise pass all arguments in place. But a
generator is homogeneous and attempting to do this correctly produced a
mypy error that FileMode arguments were allowed to be ints -- well of
course they are -- so that resulted in the convertor... treating ints
like False instead, to make mypy happy.
Fixes#11538
Reorder meson targets to handle those all at the end, and exit early if
HTML documentation is disabled. This makes it possible to build just the
manpage, without hotdoc installed.
For all source `*.py` files installed via either py.install_sources() or
an `install_dir: py.get_install_dir()`, produce `*.pyc` files at install
time. Controllable via a module option.
On Windows, the SDL2 library is generally provided with only CMake config
files. This commit allows meson to fallback on CMake as a last resort to
find the SDL2 library.
This allows changing the crate name with which a library ends up being
available inside the Rust code, similar to cargo's dependency renaming
feature or `extern crate foo as bar` inside Rust code.
Since we now guarantee that Rust and C/C++ will have assertions both on
or both off, we can give guidance about using `cfg(debug_assertions)` to
wrap code using `#ifdef NDEBUG`.
Rust has a `debug_assert!()` macro, which is designed to be toggled on
the command line. It is on by default in debug builds, and off by
default in release builds, in cargo. This matches what meson's b_ndebug
option does in `if-release` mode.
This will help with the writing of tools to generate
VisualStudio project and solution files, and possibly
for other IDEs as well.
- Used compilers a about `host`, `build` and `target` machines
arere listed in `intro-compilers.json`
- Informations lister in `intro-machines.json`
- `intro-dependencies.json` now includes internal dependencies,
and relations between dependencies.
- `intro-targets.json` now includes dependencies, `vs_module_defs`,
`win_subsystem`, and linker parameters.
We need to remember its value when reconfiguring, but the Build object
is not reused, only coredata is.
This also makes CLI more consistent by allowing `-Dvsenv=true` syntax.
Fixes: #11309
The title is used only in the sidebar. There is no need to have
"extends" information there. For returned objects the actual name is not
meaningful so it's better to use the long name. For builtin objects the
name is important because that's the global variable name.
We will still try to load `meson_options.txt` if `meson.options` doesn't
exist. Because there are some advantages to using `meson.options` even
with older versions of meson (such as better text editor handling)
we will not warn about the existence of a `meson.options` file if a
`meson_options.txt` file or symlink also exists.
The name `meson.options` was picked instead of alternative proposals,
such as `meson_options.build` for a couple of reasons:
1. meson.options is shorter
2. While the syntax is the same, only the `option()` function may be
called in meson.options, while, it may not be called in meson.build
3. While the two files share a syntax and elementary types (strings,
arrays, etc), they have different purposes: `meson.build` declares
build targets, `meson.options` declares options. This is similar to
the difference between C's `.c` and `.h` extensions.
As an implementation detail `Interpreter.option_file` has been removed,
as it is used exactly once, in the `project()` call to read the options,
and we can just calculate it there and not store it.
Fixes: #11176
This allows to run setup command regardless whether the builddir has
been configured or not previously. This is useful for example with
scripts that always repeat all options.
meson setup builddir --reconfigure -Dfoo=bar
Jussi Pakkanen
Alyssa Ross
Paolo Borelli
Xavier Claessens
Dylan Baker
Martin Dørum
Sébastien Villemot
Tristan Partin
Nathan Kidd
Nicholas Vinson
Charles Brunet
Eli Schwartz
Pablo Correa Gómez
Nirbheek Chauhan
Volker Weißmann
Joel Rosdahl
Nomura
Renan Lavarec
Matthieu Bouron
Sebastian Dröge
Josh Soref
HiPhish
Pete Dietl
andy5995