Handling the PKG_CONFIG_PATH variable in meson introduces a new problem
for caching dependencies. We want to encode the pkg_config_path (or
cross_pkg_config_path if we're cross compiling) to be part of the key,
but we don't want to put that into the key for non-pkg-config
dependencies to avoid spurious cache misses (since pkg_config_path isn't
relevant to cmake, for example). However, on a cache lookup we can't
know that a dependency is a pkg-config dependency until we've looked in
the cache.
My solution is a two layer cache, the first layer remains the same as
before, the second layer is a dict-like object that encapsulates the
dependency type information and uses pkg_config_path and
cross_pkg_config_path as a sub key (and could be extended easily for
other types). A new object type is introduced to encapsulate this so
that callers don't need to be aware of the implementation details.
It was using ':' as a path separator while GCC uses ';' resulting in bogus
paths being returned. Instead assume that the compiler uses the platform native
separator.
The previous splitting code still worked sometimes because splitting
"C:/foo;C:/bar" resulted in the last part "/bar" being valid if "<DriveOfCWD>:/bar"
existed.
The fix also exposes a clang Windows bug where it uses the wrong separator:
https://reviews.llvm.org/D61121 . Use a regex to fix those first.
This resulted in linker errors when statically linking against a library which
had an external dependency linking against system libs.
Fixes#5386
Apparently we have no tests for this because this is broken pretty
badly. This extends the basic test to actually check for the correct
free-form argument and thus test this.
There are two distinct bugs here:
1) if PKG_CONFIG_PATH is unset then the variable will be set to [''],
which causes it to have the wrong behavior in some truthiness tests
2) We read PKG_CONFIG_PATH on invocations after the first, which causes
it to overwrite the value saved into the coredata.dat file. Putting
the two bugs together it means that -Dpkg_config_path doesn't work
with `meson configure`
Meson itself *almost* only cares about the build and host platforms. The
exception is it takes a `target_machine` in the cross file and exposes
it to the user; but it doesn't do anything else with it. It's therefore
overkill to put target in `PerMachine` and `MachineChoice`. Instead, we
make a `PerThreeMachine` only for the machine infos.
Additionally fix a few other things that were bugging me in the process:
- Get rid of `MachineInfos` class. Since `envconfig.py` was created, it
has no methods that couldn't just got on `PerMachine`
- Make `default_missing` and `miss_defaulting` work functionally. That
means we can just locally bind rather than bind as class vars the
"unfrozen" configuration. This helps prevent bugs where one forgets
to freeze a configuration.
This started out with a bug report of mtest trying to add bytes + str,
which I though "Oh, mypy can help!" and turned into an entire day of
awful code traversal and trying to figure out why attributes were
changing type. Hopefully this makes everything cleaner and easier to
follow.
This avoids the duplication where the option is stored in a dict at its
name, and also contains its own name. In general, the maxim in
programming is things shouldn't know their own name, so removed the name
field just leaving the option's position in the dictionary as its name.
Also, we should at some point decide whether we're going to use American
spelling (serialize/serialization) or British (serialise/serialisation)
because we have both, and both is always worse than one or the other.
This function is currently setup with keyword arguments defaulting to
None. However, it is never called without passing all of it's arguments
explicitly, and only one of it's arguments would actually be valid as
None. So just drop that, and make them all positional. And annotate
them.
I wanted to look at the imports for annotations but was having hard time
reading them because they're just all over the place. This is purely a
human readability issue.
Intel helpfully provides a cl.exe that is indistinguishable from
Microsoft's cl.exe in output, but has the same behavior as icl.exe.
Since icl and ifort will only be present in your path if you've started
an Intel command prompt search for that first.
The Intel compiler is strange. On Linux and macOS it's called ICC, and
it tries to mostly behave like gcc/clang. On Windows it's called ICL,
and tries to behave like MSVC. This makes the code that's used to
implement ICC support useless for supporting ICL, because their command
line interfaces are completely different.
This restrictuion exists for MSVC and clang-cl, but not for ICL which
actually does support C++11 as a distinct standard. This commmit pulls
that behavior out into a mixin class for ClangClCPPCompiler and
VisualStudioCPPCompiler, as well as moving the MSVC specific
functionality into the VisualStudioCPPCompiler class.
Currently C++ inherits C, which can lead to diamond problems. By pulling
the code out into a standalone mixin class that the C, C++, ObjC, and
Objc++ compilers can inherit and override as necessary we remove one
source of diamonding. I've chosen to split this out into it's own file
as the CLikeCompiler class is over 1000 lines by itself. This also
breaks the VisualStudio derived classes inheriting from each other, to
avoid the same C -> CPP inheritance problems. This is all one giant
patch because there just isn't a clean way to separate this.
I've done the same for Fortran since it effectively inherits the
CCompiler (I say effectively because was it actually did was gross
beyond explanation), it's probably not correct, but it seems to work for
now. There really is a lot of layering violation going on in the
Compilers, and a really good scrubbing would do this code a lot of good.
Dylan Baker
Christoph Reiter
John Ericson
Score_Under
John Ericson
Daniel Mensinger
nicole mazzuca
Simon Ney
myd7349
Daniel Eklöf
Clouds
Jon Turney