Instead of the default ones, this is especially important when cross
compiling or when using compilers that aren't compatible with the
default ones.
squash! dependencies/hdf5: Use the actual system compilers
mypy noticed that we were passing [] (instead of a dict or None) to the
ClangCompiler class in objc, which made me noticed that for C and C++ we
set the defines, but not for ObjC and ObjC++
We do this by making the mixins inherit the Compiler class only when
mypy is examining the code (using some clever inheritance shenanigans).
This caught a bunch of issues, and also lets us delete a ton of code.
Every class needs to set this, so it should be part of the base. For
classes that require is_cross, the positional argument remains in their
signature. For those that don't, they just allow the base class to set
their value to it's default of False.
Currently we do some crazy hackery where we add extra properties to a
Popen object and return that. That's crazy. Especially since some of our
hackery is to delete attributes off of the Popen we don't want. Instead,
let's just have a discrete type that has exactly the properties we want.
Those function are common source of issue when used in a subproject because they
point to the parent project root which is rarely what is expected and is a
violation of subproject isolation.
This catches some very real errors.
The one in scalapack is pretty silly actually, it's failing to figure
out that the exploded list is at least two arguments. However, the code
is actually clearer by not using a list and exploding it, so I've done
that and pylint is happy too.
I've always found ninja reporting 'a meson_exe.py custom command'
unclear and confusing. Instead say we are invoking a custom command,
wrapped by meson, and why.
1. Like with gcc's `ld`, also use the `group_start` code to create a
`--start-group`/`--end-group`
2. xc16 tricked into believing the 'link_whole' was about `--*-group`,
but it should use gcc's `--whole-archive` instead.
3. Not clear what the get_lib_prefix should really do, but for picolibc
it seems I want just `''`.
The problem with picolibc was that the `-l` would be prefixed to a lib
like `picolib/libm/libm.a`. Though of course the `-l` would be necessary
for just a plain `m` (that's what I assumed this would be used for).
I think this might need some clarification from the meson devs ;-)
It was done to include them in `meson subprojects foreach` without
--types argument, but it's better to special case missing --types and
include wraps that have type=None too. It was a bad idea because that
was messing them in `meson subprojects update`, now they are ignored by
that command.
If revision is a tag that does not exist locally, `git fetch origin
<revision>` won't create it and checkout will fail. Using --refmap
ensures that references exists locally.