no_warn_args is unused. Its only purpose was to implement automatic
hiding of UB in transpiled code, and it was not used at all in languages
other than C/C++ -- specifically when the C/C++ source files were
created by transpiling from vala or cython.
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.
[why]
On Apple clang 15.0.0 linker (i.e. ld64 1015.7) giving the same rpath
multiple times raises a warning:
ld: warning: duplicate -rpath '/local/lib' ignored
This can frequently happen when linking several dependencies that all
have that rpath in e.g. pkgconfig.
[how]
Deduplicate all rpath arguments.
[note]
I'm not sure how the code handles --start/end-group, but for rpath that
should not make any difference as that is not bound to a group.
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>
Partially reverts commit 1624354f33 which
moved a bunch of stuff from strings to enums. The issue here is that
Compiler.mode is not just, or primarily, something we compare, but is
instead written in as e.g. `rule c_{compiler.mode}` to build.ninja, so
this identifier needs to be a string.
Ultimately, the issue is that the commit tried to rewrite a bunch of
things called "mode" that had a couple of TODOs saying to use enums...
but it rewrote everything called "mode" regardless of whether it was a
function kwarg or a compiler property, even though the TODO only applied
to one of them.
It should *be* a version comparison. We are guaranteed to get a
two-element version number, which also parses as a float but a float
doesn't correctly handle version sorting when the second component
differs in number of digits.
The standard way to handle this is by comparing tuples such that each
component is an integer. Do so here.
Fixes#12195
Co-authored-by: George Koehler <xkernigh@netscape.net>
(for unittests)
According to the Meson documentation, optimization level 3 should
set the highest possible optimization for the compiler in use.
In Metrowerks, this is 'O4,p'. However, Meson's Metrowerks
implementation mapped opt level 3 to '-O3'. This has been fixed.
The args were in both buildtype and optimization. This broke buildtypes other
than plain or custom unless manually setting the optimization level to
0, because Metrowerks chokes on duplicate arguments.
A standard C library may not exist for cross-compile
environments, thus the existence of <stdio.h> cannot be
guaranteed.
Use <stddef.h> instead, this header contains compiler-specific
defines thus it usually comes from the compiler.
Adds a new method to the compiler object, has_define.
This makes it possible to check if a preprocessor macro/define
is set or not.
This is especially helpful if the define in question is empty,
for example:
#define MESON_EMPTY_DEFINE
This would yield the same results as a missing define with
the existing get_define method, as it would return an empty
string for both cases. Therefore this additional method is
needed.
Performed using https://github.com/ilevkivskyi/com2ann
This has no actual effect on the codebase as type checkers (still)
support both and negligible effect on runtime performance since
__future__ annotations ameliorates that. Technically, the bytecode would
be bigger for non function-local annotations, of which we have many
either way.
So if it doesn't really matter, why do a large-scale refactor? Simple:
because people keep wanting to, but it's getting nickle-and-dimed. If
we're going to do this we might as well do it consistently in one shot,
using tooling that guarantees repeatability and correctness.
Repeat with:
```
com2ann mesonbuild/
```
clang has supported gcc syntax since version 3.3.0 from 10 years ago.
It's better than its own version because it takes a "when" verb which
allows us to explicitely ask for "auto". This is useful when overriding
flags that came from elsewhere.
Before this patch, meson was just treating b_colorout="auto" as "always".
Since it's deprecated anyway, we don't really want to plumb it all the
way down into the build and backend layers. Instead, we can just turn
it into a `win_subsystem` value in the interpreter if `win_subsystem`
isn't already set.
This detects cases where module A imports a function from B, and C
imports that same function from A instead of B. It's not part of the API
contract of A, and causes innocent refactoring to break things.
Fixes get_define() for MSVC. cl with /std:c11 and newer add a trailing
space character when substituting, even if macro is empty. This breaks
parsing preprocessed output to extract value. Since they cannot contain
spaces it is safe to simply strip parsed value.
Fixes: #10179
This saves on a 1500-line import at startup and may be skipped entirely
if no compiled languages are used. In exchange, we move the
implementation to a new file that is imported instead.
Followup to commit ab20eb5bbc.
C like compilers only off `-DNDEBUG` to disable asserts. This is not a
universal paradigm however. Rust, for example has an argument that takes
a boolean. To better represent this, we allow passing a `disable`
boolean. `disable` was chosen rather than `enable` because it allowed
all existing logic to be left in place
This option was introduced with GCC 8.1.0 as in the original commit, but the
value wasn't right initially and was volatile during the 8 series.
To avoid this, this commit moves the warning to 9.1.0 (the next version we
generally care about), since we don't want to get too deep into the weeds of
point releases, and a warning not being used yet in some particular version of
GCC isn't a big deal.
Eventually we would probably be better served (to avoid unnecessary
copies) to use the ImmutableListProtocol here, but for the moment this
is effective, it's also what we do in every other case.
We assume /utf-8 for all C builds unless /source-charset or
/execution-charset is specified, but then this will cause trouble for
Visual Studio 2013 or earler since the /utf-8 flag is only supported
since Visual Studio 2015. Specifically, if we try to check whether
compiler flags are supported, those checks will fail since /utf-8 is
never supported on these older Visual Studio versions.
Drop /utf-8 from get_always_args() if we are using Visual Studio 2013
or earlier.
Profiling showed that we were spending 25s inside os.path.realpath()
on Windows while generating compile lines for build.ninja, inside
NinjaBackend.generate()
The real path for these will not (should not) change during a single
meson invocation, so cache all these.
Brings build.ninja generation from 73s to 47s on my machine.
Eli Schwartz
Fini Jastrow
Eli Schwartz
Xavier Claessens
Marvin Scholz
Nomura
Moody Liu
Benoit Pierre
Charles Brunet
kiwixz
Dylan Baker
Tristan Partin
Kacper Michajłow
Josh Soref
HiPhish
Renan Lavarec
Volker Weißmann
David Robillard
Andres Freund
Luke Elliott
Chun-wei Fan
Kleis Auke Wolthuizen
Nirbheek Chauhan