We've documented these lists as being `List[Path]`, but then we have the
potential to insert a None into them via the `rel_path()` function,
which can return `None` in some cases. Currently we fix some (but not
all) of these later, but we should actually remove them from the list
before we assign, so that it's actually a `List[Path]` at all times.
While we're here I've simplified the logic a bit.
Closes: #13551
CMake has two target properties, LINK_OPTIONS and INTERFACE_LINK_OPTIONS.
The former is for link flags that apply only to the target (PRIVATE).
The latter is used for link flags that propagate to dependents (PUBLIC
or INTERFACE). Meson currently propagates all flags, PUBLIC and PRIVATE,
as part of the generated dependency() which causes problems when some of
the private flags are highly disruptive, e.g. `-Wl,--version-script`.
Tease apart the two kinds of link flags and, for non-static libraries,
only propagate the PUBLIC/INTERFACE flags and not the PRIVATE ones.
GENERATED files can be used as dependencies for other targets, so it's
misguided (at best) to filter them with a blunt whitelist.
However, there does exist an extension that needs to be skipped: on Windows +
MSVC, CMake will by default try to generate a Visual Studio project, and
there dependencies with no inputs are instead tied to a dummy .rule
input file which is created by the generation step. The fileapi will
still report those, so it will cause Meson to bail out when it realises
there's no such file in the build tree.
Fixes#11607
This replaces all of the Apache blurbs at the start of each file with an
`# SPDX-License-Identifier: Apache-2.0` string. It also fixes existing
uses to be consistent in capitalization, and to be placed above any
copyright notices.
This removes nearly 3000 lines of boilerplate from the project (only
python files), which no developer cares to look at.
SPDX is in common use, particularly in the Linux kernel, and is the
recommended format for Meson's own `project(license: )` field
This properly sets the project version in projects meson generates from
cmake projects. This allows dependency fallbacks to properly check the
version constraints in dependency calls when falling back to a cmake
subproject. Before this would fail, because the project version was
undefined.
Which adds the `use-set-for-membership` check. It's generally faster in
python to use a set with the `in` keyword, because it's a hash check
instead of a linear walk, this is especially true with strings, where
it's actually O(n^2), one loop over the container, and an inner loop of
the strings (as string comparison works by checking that `a[n] == b[n]`,
in a loop).
Also, I'm tired of complaining about this in reviews, let the tools do
it for me :)
flake8 6 upgrades to pyflakes 3, and in turn this means that support for
parsing `# type: ` style annotations has been removed.
https://github.com/PyCQA/pyflakes/pull/684
This caused one file to fail linting, because it had a typing import
which was only used by a type comment.
```
mesonbuild/cmake/interpreter.py:55:5: F401 '.common.CMakeConfiguration' imported but unused
```
Updating it to actual annotations allows pyflakes to detect its usage
again, and flake8 passes. Do the whole file while we are here.
This catches some optimization problems, mostly in the use of `all()`
and `any()`. Basically writing `any([x == 5 for x in f])` vs `any(x == 5
for x in f)` reduces the performance because the entire concrete list
must first be created, then iterated over, while in the second f is
iterated and checked element by element.
We have a lot of these. Some of them are harmless, if unidiomatic, such
as `if (condition)`, others are potentially dangerous `assert(...)`, as
`assert(condtion)` works as expected, but `assert(condition, message)`
will result in an assertion that never triggers, as what you're actually
asserting is `bool(tuple[2])`, which will always be true.
When mutable items are stored in an lru cache, changing the returned
items changes the cached items as well. Therefore we want to ensure that
we're not mutating them. Using the ImmutableListProtocol allows mypy to
find mutations and reject them. This doesn't solve the problem of
mutable values inside the values, so you could have to do things like:
```python
ImmutableListProtocol[ImmutableListProtocol[str]]
```
or equally hacky. It can also be used for input types and acts a bit
like C's const:
```python
def foo(arg: ImmutableListProtocol[str]) -> T.List[str]:
arg[1] = 'foo' # works while running, but mypy errors
```
Dylan Baker
spaette
Jussi Pakkanen
Jonathon Anderson
Jouke Witteveen
L. E. Segovia
Nicolas Werner
Xavier Claessens
Charles Brunet
Eli Schwartz
Alf Henrik Sauge
Volker Weißmann
Daniel Mensinger
Tristan Partin
Christian Clauss
Justin Handville