Currently, if we run "meson configure -Doption=value", meson will
do a reconfigure when running "ninja build" afterwards, even if
the new value is the same one that was already configured previously.
To avoid this unnecessary reconfigure, let's use replace_if_different()
instead of unconditionally replacing the conf file in coredata's save()
function.
The check for whether or not a file is allowed to be accessed from a
subproject fails if the subproject is accessed via a symlink. Use the
absolute path of the subproject without resolving symlinks to fix the
check.
Extend unit test 106 to check for this in the future.
When a subproject is disabled on the initial configuration we should not
add it into self.coredata.initialized_subprojects because that will
prevent calling self.coredata.init_builtins() on a reconfigure if the
subproject gets enabled.
Fixes: #10225.
There are a couple issues that combine to make the current handling a
bit confusing.
- we call it "install_dir_name" but it is only ever the class default
- CustomTarget always has it set to None, and then we check if it is
None then create a different variable with a safe fallback. The if is
useless -- it cannot fail, but if it did we'd get an undefined
variable error when we tried to use `dir_name`
Remove the special handling for CustomTarget. Instead, just always
accept None as a possible value of outdir_name when constructing install
data, and, if it is None, fall back to {prefix}/outdir regardless of
what type it used to be.
Fix "Tried to grab file outside current (sub)project" error when subproject exists within
a source tree but it is used through a symlink. Using subprojects as symlinks is very useful
feature when migrating an existing codebase to meson that all sources do not need to be
immediately moved to subprojects folder.
Older versions are not supported by the cmake module since 0.62.
This avoids having to hard-code the linux-bionic-gcc CI job as being
unable to run these tests, which leaves other older environments like
Debian 10 still trying to run them (and failing).
Signed-off-by: Simon McVittie <smcv@collabora.com>
dep.get_variable() only supports string values for pkg-config and
config-tool, because those interfaces use text communication, and
internal variables (from declare_dependency) operate the same way.
CMake had an oddity, where get_variable doesn't document that it allows
list values but apparently it miiiiiight work? Actually getting that
kind of result would be dangerously inconsistent though. Also, CMake
does not support lists so it's a lie. Strings that are *treated* as
lists with `;` splitting don't count...
We could do two things here:
- raise an error
- treat it as a string and return a string
It's not clear what the use case of get_variable() on a maybe-list is,
and should probably be a hard error. But that's controversial, so
instead we just return the original `;`-delimited string. It is probably
the wrong thing, but users are welcome to cope with that somehow on
their own.
Adds a new debug() function that can be used in the meson.build to
log messages to the meson-log.txt that will not be printed to stdout
when configuring the project.
Previously subprojects inherited languages already added by main
project, or any previous subproject. This change to have a list of
compilers per interpreters, which means that if a subproject does not
add 'c' language it won't be able to compile .c files any more, even if
main project added the 'c' language.
This delays processing list of compilers until the interpreter adds the
BuildTarget into its list of targets. That way the interpreter can add
missing languages instead of duplicating that logic into BuildTarget for
the cython case.
Perhaps when this test case was originally created, project tests could
not use a matrix of options? This is certainly possible today, so don't
write special unittest handling for this instead.
This adds proper visibility into what gets run and what doesn't. Now we
know which python executables got tested and which got skipped.
This reverts commit 79c6075b56.
# Conflicts:
# docs/markdown/snippets/devenv.md
# mesonbuild/modules/python.py
# test cases/unit/91 devenv/test-devenv.py
PYTHONPATH cannot be reliably determined. The standard use case for
installing python modules with Meson is mixed pure sources (at least
`__init__.py`) and compiled extension_modules or configured files.
Unfortunately that doesn't actually work because python will not load
the same package hierarchy from two different directories, one a source
directory and one a (mandatory) out of tree build directory.
(It kind of can, but you need to do what this test case accidentally
stumbled upon, which is namespace packages. Namespace packages are a
very specific use case and you are NOT SUPPOSED to use them outside that
use case, so people are not going to use them just to circumvent Meson
devenv stuff as that would have negative install-time effects.)
Adding PYTHONPATH anyway will just lead to documentation commitments
which we cannot actually uphold, and confusing issues at time of use
because some imports *will* work... and some will *not*. The end result
will be a half-created tree of modules which just doesn't work together
at all, but because it partially works, users attempting to debug it
will spend time wondering why parts of it do import.
For any case where the automatic devenv would work correctly, it will
also work correctly to use `meson.add_devenv()` a single time, which is
very easy to manually get correct and doesn't provide any significant
value to automate.
In the long run, an uninstalled python package environment will require
"editable installs" support.
Emit a detailed deprecation warning that explains what to do instead.
Also add a unittest.
```
DEPRECATION: target prog links against shared module mymod, which is incorrect.
This will be an error in the future, so please use shared_library() for mymod instead.
If shared_module() was used for mymod because it has references to undefined symbols,
use shared_libary() with `override_options: ['b_lundef=false']` instead.
```
Fixes https://github.com/mesonbuild/meson/issues/9492
This adds a new category of tests that does not need to run on all
platforms during CI. For now only run them on Linux runners because they
are not the bottleneck.
This requires a bit of extra code because the version might change, but
otherwise it fits in the existing AllPlatformTests.test_summary testcase
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It is a commonly needed information to help debugging build issues. We
already were printing options with non-default value at the end of the
configure but outside of the summary.
Keeping the list of user defined options in the interpreter will also in
the future be useful to use new default value on reconfigure.
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.
In the case main->subp->subsubp, if subsubp succeed to configure but
subp subsequentially fails, subsubp is still being built but its summary
was missing.
We need to konw on rconfigure which options have already bee set not
just for the super project, but also for the subproject. However, using
first_invocation is not sufficient, as a reconfigure could add a new
subpproject that wasn't present before, and we need to initialize that
project's builtins.
Dylan Baker
Eli Schwartz
Daan De Meyer
Jussi Pakkanen
Hemmo Nieminen
Xavier Claessens
Vili Väinölä
Simon McVittie
Fredrik Salomonsson
Marvin Scholz
Nirbheek Chauhan
Volker Weißmann
Paolo Bonzini
Filipe Laíns
lilinzhe
Daniel Mensinger
Jason Francis