The MSVC linker errors out if a line in the rspfile is too long.
The resolution is to use the built-in ninja keyword $in_newline instead of $in, which splits each input into separate lines.
This also moves the repacking into the interpreter, making the build
implementation simpler and removing a layering violation. This also
makes use a defaultdict to remove the need to call `.get()`
Way back in Meson 0.25, support was added to `vala_args` for Files.
Strangely, this was never added to any other language, though it's been
discussed before. For type safety, it makes more sense to handle this in
the interpreter level, and pass only strings into the build IR.
This is accomplished by adding a `depend_files` field to the
`BuildTarget` class (which is not exposed to the user), and adding the
depend files into that field, while converting the arguments to relative
string paths. This ensures both the proper build dependencies happen, as
well as that the arguments are always strings.
lcov 2.0 deprecates `--rc lcov_branch_coverage=1` for `--rc branch_coverage=1` and
gives an error when an exclude is used on a non existing directory.
I added a version check for lcov and removed the subprojects directory from the
exclusion list if it does not exist.
Fixes#11995
The MSVC code is extremely confusing, and it turns out it actually
constructs debug (pdb) files names/path independently in separate
places. This is really hard to parse. Instead, refactor it so that the
source of the debug filename is within the target itself
(get_debug_filename). Add a couple of generic methods to retrieve the
full path of the debug filename name in the backend and use that when
needed.
Add the `clang-tidy-fix` target to apply clang-tidy fixes to the source
code.
This is done by calling `run-clang-tidy` with `-fix` argument.
Add a test case to run `clang-tidy-fix` and verify the file is changed.
Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Rustc expects to be provided both a search path `-L`, and a link arg `-l
kind=libname`, but we don't handle that correctly. Because we combine -L
and -l arguments from pkg-config the backend must rematerialize the -L
and -l split. We currently don't do this for static archives.
Rustc does not produce object files we can reuse to build both
libraries. Ideally this should be done with a single target that has
both `--crate-type` arguments instead of having 2 different build rules.
As temporary workaround, build twice and ensure they don't get conflicts
in intermediary files created by rustc by passing target's private
directory as --out-dir.
See https://github.com/rust-lang/rust/issues/111083.
Installing python sources causes the python module to call
create_install_data() before Ninja backends adds extra outputs to Vala
targets.
Target objects are supposed to be immutable, adding outputs that late is
totally wrong. Add extra vala outputs immediately, but be careful
because the main output is only added later in post_init(). Luckily
the base class already puts a placeholder item in self.outputs for the
main filename so we can just replace self.outputs[0] instead of
replacing the whole list which would contain vala outputs at that stage.
This is surprisingly what SharedLibrary was already doing.
Apple's AR is old, and doesn't add externed symbols to the symbol table,
instead relying on the user calling ranlib with -c. We need to do that
for the user
The most notable problem this causes is that when running `meson setup
--reconfigure` the build.ninja file is erroneously seen as out of date,
so ninja immediately tries to regenerate it again as it didn't see the
file get updated.
There are two problems.
The first problem is that we looked for the wrong file. Ninja creates a
few internal files, and one of them is the one we care about:
`.ninja_log`, which contains stat'ed timestamps for build outputs to aid
in checking when things are out of date. But the thing we actually
checked for is `.ninja_deps`, a file that contains a compressed database
of depfile outputs. If the latter exists, then the former surely exists
too.
Checking for the wrong file meant that we would restat outputs, but only
when some build edges were previously built that had depfile outputs.
The second problem is that we checked for this in os.getcwd() instead of
the configured build directory. This very easily fails to be correct,
except when reconfigure is triggered directly by ninja itself, in which
case we didn't need the restat to begin with.
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.
We need to verify that we don't produce multiple rules for the same
file. This uniqueness check is easy to do with a set, but the original
old implementation used a dict with True as the value. This isn't a
terrible way to implement a set -- we do it for our own internal
OrderedSet implementation, even, and back in prehistory (python 2.3) the
standard library's set type was one. But it was deleted and replaced
with a fast native implementation, and we should too.
I originally refactored this wrapper function in commit
dd2f1c4c57 and at the time I made it take
the following call pattern:
```
self.create_phony_target(self.all_outputs, ..., implicit_outs=None)
```
I am not sure *why*. There are a couple problems here:
- When creating a phony target, there are never implicit outs and we never
try to create them.
- It's invalid to call it without self.all_outputs as the first argument,
so really we should just use that directly.
This made the function signature pointlessly longer and more
complicated.
When running setup with `--profile-self` option,
there are currently no logs after "Found ninja...". However, there are
still some lengthy processes for generating targets and ninja.build.
This add more log entries, when profiling, only for the purpose of
displaying the timestamps of the different steps in ninja generation.
By avoiding Java-style variable naming, the code becomes considerably
more readable while simultaneously becoming *more* easy to understand.
It's no longer necessary to ask questions like "what's a captured
buildtype" when trying to read through the code for a backend, because
it can be dismissed as not relevant to the current context by re-reading
it as "context for vslite".
The primary goal here has been to revert regressions in the developer
experience for users of the ninja backend, so there may still be issues
in vs2010backend.py
Post-facto application of issues that were raised during review,
ignored, and merged despite such.
* Capture all compile args from the first round of ninja backend generation for all languages used in building the targets so that these args, defines, and include paths can be applied to the .vcxproj's intellisense fields for all buildtypes/configurations.
Solution generation is now set up for mutiple build configurations (buildtypes) when using '--genvslite'.
All generated vcxprojs invoke the same high-level meson compile to build all targets; there's no selective target building (could add this later). Related to this, we skip pointlessly generating vcxprojs for targets that aren't buildable (BuildTarget-derived), which aren't of interest to the user anyway.
When using --genvslite, no longer inject '<ProjectReference ...>' dependencies on which a generated .vcxproj depends because that imposes a forced visual studio build dependency, which we don't want, since we're essentially bypassing VS's build in favour of running 'meson compile ...'.
When populating the vcxproj's shared intellisense defines, include paths, and compiler options fields, we choose the most frequent src file language, since this means more project src files can simply reference the project shared fields and fewer files of non-primary language types need to populate their full set of intellisense fields. This makes for smaller .vcxproj files.
Paths for generated source/header/etc files, left alone, would be added to solution projects relative to the '..._vs' build directory, where they're never generated; they're generated under the respective '..._[debug/opt/release]' ninja build directories that correspond to the solution build configuration. Although VS doesn't allow conditional src/header listings in vcxprojs (at least not in a simple way that I'm aware of), we can ensure these generated sources get adjusted to at least reference locations under one of the concrete build directories (I've chosen '..._debug') under which they will be generated.
Testing with --genvslite has revealed that, in some cases, the presence of 'c:\windows\system32;c:\windows' on the 'Path' environment variable (via the make-style project's ExecutablePath element) is critical to getting the 'meson compile ...' build to succeed. Not sure whether this is some 'find and guess' implicit defaults behaviour within meson or within the MSVC compiler that some projects may rely on. Feels weird but not sure of a better solution than forcibly adding these to the Path environment variable (the Executable Path property of the project).
Added a new windows-only test to windowstests.py ('test_genvslite') to exercise the --genvslite option along with checking that the 'msbuild' command invokes the 'meson compile ...' of the build-type-appropriate-suffixed temporary build dir and checks expected program output.
Check and report error if user specifies a non-ninja backend with a 'genvslite' setup, since that conflicts with the stated behaviour of genvslite. Also added this test case to 'WindowsTests.test_genvslite'
I had problems tracking down some problematic environment variable behaviour, which appears to need a work-around. See further notes on VSINSTALLDIR, in windowstests.py, test_genvslite.
'meson setup --help' clearly states that positional arguments are ... [builddir] [sourcedir]. However, BasePlatformTests.init(...) was passing these in the order [sourcedir] [builddir]. This was producing failures, saying, "ERROR: Neither directory contains a build file meson.build." but when using the correct ordering, setup now succeeds.
Changed regen, run_tests, and run_install utility projects to be simpler makefile projects instead, with commands to invoke the appropriate '...meson.py --internal regencheck ...' (or install/test) on the '[builddir]_[buildtype]' as appropriate for the curent VS configuration. Also, since the 'regen.vcxproj' utility didn't work correctly with '--genvslite' setup build dirs, and getting it to fully work would require more non-trivial intrusion into new parts of meson (i.e. '--internal regencheck', '--internal regenerate', and perhaps also 'setup --reconfigure'), for now, the REGEN project is replaced with a simpler, lighter-weight RECONFIGURE utility proj, which is unlinked from any solution build dependencies and which simply runs 'meson setup --reconfigure [builddir]_[buildtype] [srcdir]' on each of the ninja-backend build dirs for each buildtype.
Yes, although this will enable the building/compiling to be correctly configured, it can leave the solution/vcxprojs stale and out-of-date, it's simple for the user to 'meson setup --genvslite ...' to fully regenerate an updated, correct solution again. However, I've noted this down as a 'fixme' to consider implementing the full regen behaviour for the genvslite case.
* Review feedback changes -
- Avoid use of 'captured_compile_args_per_buildtype_and_target' as an 'out' param.
- Factored a little msetup.py, 'run(...)' macro/looping setup steps, for genvslite, out into a 'run_genvslite_setup' func.
* Review feedback: Fixed missing spaces between multi-line strings.
* 'backend_name' assignment gets immediately overwritten in 'genvslite' case so moved it into else/non-genvslite block.
* Had to bump up 'test cases/unit/113 genvslites/...' up to 114; it collided with a newly added test dir again.
* Changed validation of 'capture' and 'captured_compile_args_...' to use MesonBugException instead of MesonException.
* Changed some function param and closing brace indentation.
* Archive shared library in AIX
This code change to ensure we archive shared libraries in AIX.
The things we do are:
Archive shared library
Install archived shared library
Build all must build the archived shared library
blibpath must have the archived shared library dependency.
* Archive shared library in AIX.
Made changes as per the review comments given in the first
PR request.
They are:-
Use self.environment.machines[t.for_machine].is_aix()
Remove trial spaces
Use of val instead of internal
Changed comments wherever requested
* Space after octothorpe
* Fixed failed test case causing build break during install section
* Moved AIX specific code to AIXDynamicLinker from backend
* Fix indentation, trailing spaces, add type annotations and Linux/macOS build break
* Remove some more trailing space issues
* Fixed the wrong return type in linkers
Rust by default links with the default MSVCRT, (dynamic, release).
MSVCRT's cannot be mixed, so if Meson compiles a C or C++ library and
links it with the debug MSVCRT, then tries to link that with the Rust
library there will be failures. There is no built-in way to fix this for
rustc, so as a workaround we inject the correct arguments early in the
linker line (before any libs at least) to change the runtime. This seems
to work and is recommended as workaround in the upstream rust bug
report: https://github.com/rust-lang/rust/issues/39016.
Given that this bug report has been opened since 2017, it seems unlikely
to be fixed anytime soon, and affects all (currently) released versions
of Rust.
This reverts commit a2def550c5.
This results in a 2k line file being unconditionally imported at
startup, and transitively loading two more (for a total cost of 2759
lines of code), and it's not clear it was ever needed to begin with...
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.
Linkers that aren't actually ar, were refactored into a base class in
commit 253ff71e6b, which however didn't
take into account that we were doing checks for this.
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.
We are going to truncate it down below with int() anyway, no need to
carry extra precision. And mypy complains if the type changes between
float and int.
Specifically, when those files can be created by a build rule with one
version of meson.build, and created as e.g. a shared_library alias
symlink in another version of meson.build, the cleandead command will
delete important files just because they don't happen to be created by
ninja itself.
Work around this by making a dummy rule that exists solely to insert the
files into the build graph to trick ninja into not deleting them.
Closes#11861
ninja's configured command for regenerating a build directory on any
action that *requires* reconfiguring, specifies the source and build
directories as they were known during initial project generation. This
means that if the build directory is no longer the *same* build
directory, we will regenerate... the original location, rather than the
location we want.
After that, ninja notices that build.ninja is still out of date, so it
goes and reconfigures again. And again. And again.
This is probably broken intentions, but endless reconfigure loops are a
kind of evil beyond all evils. There are no valid options here
whatsoever other than:
- doing what the user actually meant
- spawning a clear error message describing why meson refuses to work,
then exiting with a fatal error
But it turns out that it's actually pretty easy to do what the user
actually meant, and reconfigure the current build directory instead of
the original one. This permanently breaks the link between the two.
Fixes#6131
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.
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.
Nirbheek Chauhan
Ada
Dylan Baker
Nigel Kukard
Nomura
Dudemanguy
Lei YU
Xavier Claessens
Eli Schwartz
Charles Brunet
Tristan Partin
GertyP
Aditya Kamath
Alyssa Ross
Volker Weißmann
Sebastian Dröge