Only Environment and ConfigurationData are mutable. However, only
ConfigurationData becomes immutable after first use which is
inconsistent.
This deprecates modification after first use of Environment object and
clarify documentation.
When a user writes `import'foo')`, Meson checks the
`mesonbuild/modules/` directory for a package called `foo.py`, and
attempts to import it. We don't want to expose any implementation detail
packages like `_qt.py`, so if someone write `import('_qt')`, we should
immediately give a "doesn't exist" error.
This incorrectly warns that `compiler.run()` is new in 1.5.0 for
Fortran, but that works fine for older versions (noted with 1.2.3). This
makes sense, as FortranCompiler inherits CLikeCompiler
This fixes issues where a new option is added, an option is removed, the
constraints of an option are changed, an option file is added where one
didn't previously exist, an option file is deleted, or it is renamed
between meson_options.txt and meson.options
There is one case that is known to not work, but it's probably a less
common case, which is setting options for an unconfigured subproject.
We could probably make that work in some cases, but I don't think it
makes sense to download a wrap during meson configure.
When we load the option file in the interpreter record which file it
was, and what the hash of that file was. This will let `meson configure`
know that the options have changed since the last re-configure.
Otherwise internal dependencies have auto-generated names that are not
human readable. Instead, use the name that the dependency overrides. For
example:
```meson
meson.override_dependency('zlib', declare_dependency())
dep_zlib = dependency('zlib')
assert(dep_zlib.name() == 'zlib')
```
Fixes: #12967
Python provides some nifty tools for mocking, without relying on
altering running code. We should use these to simplify the actual run
paths and move the complicated logic into tests.
This patch adds 'depends' keyword to compiler.preprocess().
It allows to execute other targets before doing the preprocessing.
Test-case is added to demonstrate that functionality: it
generates the header before preprocessing the C source that
uses that generated header.
Thanks to @bruchar1 for getting this patch to work.
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
If an annotation could not be resolved, it's classified as a "missing
import" and our configuration ignored it:
```
Skipping analyzing "mesonbuild.backends": module is installed, but missing library stubs or py.typed marker
```
As far as mypy is concerned, this library may or may not exist, but it
doesn't have any typing information at all (may need to be installed
first).
We ignored this because of our docs/ and tools/ thirdparty dependencies,
but we really should not. It is trivial to install them, and then
enforce that this "just works".
By enforcing it, we also make sure typos get caught.
This is needed now that str.format() is not allowing it any more. It is
also more consistent with other objects that have that method as well,
such as build targets.
Fixes: #12406
It was previously impossible to do this:
```
dep.get_pkgconfig_variable(
'foo',
define_variable: ['prefix', '/usr', 'datadir', '/usr/share'],
)
```
since get_pkgconfig_variable mandated exactly two (if any) arguments.
However, you could do this:
```
dep.get_variable(
'foo',
pkgconfig_define: ['prefix', '/usr', 'datadir', '/usr/share'],
)
```
It would silently do the wrong thing, by defining "prefix" as
`/usr=datadir=/usr/share`, which might not "matter" if only datadir was
used in the "foo" variable as the unmodified value might be adequate.
The actual intention of anyone writing such a meson.build is that they
aren't sure whether the .pc file uses ${prefix} or ${datadir} (or which
one gets used, might have changed between versions of that .pc file,
even).
A recent refactor made this into a hard error, which broke some projects
that were doing this and inadvertently depending on some .pc file that
only used the second variable. (This was "fine" since the result was
essentially meaningful, and even resulted in behavior identical to the
intended behavior if both projects were installed into the same prefix
-- in which case there's nothing to remap.)
Re-allow this. There are two ways we could re-allow this:
- ignore it with a warning
- add a new feature to allow actually doing this
Since the use case which triggered this bug actually has a pretty good
reason to want to do this, it makes sense to add the new feature.
Fixes https://bugs.gentoo.org/916576
Fixes https://github.com/containers/bubblewrap/issues/609
This time we have a case where people are passing non-objects by using
them as str | File, which we never warned about and silently accepted.
If it was passed via custom_target outputs we *would* error out,
interestingly enough. At the backend layer, we just pass them directly
to the linker... which is valid, if we misdetected what's a valid linker
input or people just used funny names. In particular, the mingw
toolchain allows passing a *.def file directly, and some people are
doing that.
If we do want to allow this, we should do it consistently. For now, just
follow the current theme of what's expected, but do so by warning
instead of fatally erroring, for cases where users were able to do it in
the past.
We haven't actually verified that these kwargs are equal to what we had
before, and should probably revert the entire series. But I have
multiple reports in the wild of projects that no longer build because of
`install: [true, false, get_option('foobar')]` which was always
incorrect and always equal to just dropping values all over the floor
and treating it the same as "bool(value) == True".
Special case this particular typed kwarg and allow it with a sternly
worded warning that it was always wrong and should never ever ever be
done.
Fixes: https://bugs.gentoo.org/917118
Fixes: http://qa-logs.debian.net/2023/11/11/rhythmbox_3.4.7-1_unstable_meson-exp.log
Thanks to the Gentoo Tinderbox project, and Lucas Nussbaum of the Debian
project.
Regression in commit a3d287c553.
When a given kwarg is not specified, we want to not generate it as a
simd variant. Since the default for buildtarget sources is `[]` it
resulted in building a static library with no sources, and a warning
stating that this was buggy and will eventually be removed.
Fix this by teaching buildtarget sources to allow None, and defaulting
to it specifically for the simd module. We can check this and then skip
processing entirely.
Fixes#12438
adb1a360b9 added the feature and also the
usual meson-style warning to users that might be using the feature but
were not targeting a new enough meson version. Well unfortunately the
warning both doesn't actually work (it didn't take different directories
into account) and is also really slow because it creates an O(N^2) loop
for checking this.
Instead, rework this by adding an additional set that stores a tuple
containing the target name and its subdirectory. We only add this tuple
if the target is an executable since it is the only time it will be
relevant. After that, simply check if the name + subdir combination
already exists in the set along with the target being executable. If so,
then we execute FeatureNew which may possibly warn. This is a simply
O(1) lookup which is way faster. Fixes#12404.
Xavier Claessens
Dylan Baker
Charles Brunet
Gerion Entrup
Yegor Yefremov
Tristan Partin
Eli Schwartz
Stas Sergeev
Dudemanguy