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ccache has been for a long time compatible with MSVC (since 4.6)
but when using debug mode, the /Z7 flag must be passed instead of
/Zi.
See https://ccache.dev/releasenotes.html#_ccache_4_6
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The most egregious cases are Nasm (which needs to be transformed to `ASM_NASM`) and Rust (which is not yet supported by CMake).
See https://cmake.org/cmake/help/v4.0/command/project.html
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This will be used by rustdoc tests because the Test objects takes a
single string for the command and everything else goes in the args.
But apart from this, the need to split the executable from the
arguments is common so create new methods to do it.
While at it, fix brokenness in the handling of the zig compiler, which
is checking against "zig" but failing to detect e.g. "/usr/bin/zig".
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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ref: https://gitlab.kitware.com/cmake/cmake/-/merge_requests/9875
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This setting is for things like `ccache`, but if Meson treats zig that
way, then it will expand the second argument to become:
```
/usr/bin/zig /usr/lib64/ccache/cc
```
in CMake and `/usr/lib64/ccache/cc` is _not_ an argument to `zig`.
If you run
```
$ CC='zig cc' CXX='zig c++' ./meson.py setup 'test cases/cmake/1 basic' build
```
then CMake will fail to compile a "simple test program" and setup
fails.
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Co-Authored-By: L. E. Segovia <amy@amyspark.me>
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This replaces all of the Apache blurbs at the start of each file with an
`# SPDX-License-Identifier: Apache-2.0` string. It also fixes existing
uses to be consistent in capitalization, and to be placed above any
copyright notices.
This removes nearly 3000 lines of boilerplate from the project (only
python files), which no developer cares to look at.
SPDX is in common use, particularly in the Linux kernel, and is the
recommended format for Meson's own `project(license: )` field
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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/
```
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In various situations we want to figure out what type of compiler we
have, because we want to know stuff like "is it the pgi one", or "does
it use msvc style". The compiler object has this property already, via
an API specifically designed to communicate this info, but instead we
performed isinstance checks on a compiler class.
This is confusing and indirect, and has the side effect of requiring
more imports everywhere. We should do away with it.
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Sometimes, the machine file can include compiler command line options,
in order to pick the correct multilib. For example, Meson uses "$cc
--print-search-dirs" to find the library search path, where $cc is the
cc from the machine file. Because the outputs of "gcc -m32
--print-search-dirs" and "gcc --print-search-dirs" are different, this
only works if you have
[binaries]
cc = ['gcc', '-m32']
in the machine file. Right now, however, the cmake module assumes that
the compiler listed in the machine file is either a compiler, or a
"launcher" followed by the compiler. Check if the second argument
starts with a slash (for Microsoft-like compilers) or a dash (for
everyone else), and if so presume that the CMAKE_*_COMPILER_LAUNCHER
need not be defined.
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Instead of guessing the internal compiler
variables, Meson now runns CMake once to
determine what they actually are.
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performed by running "pyupgrade --py36-plus" and committing the results
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We added the _pathlib module to work around defeciencies in python 3.5's
implementation, since we now rely on 3.6 lets drop this
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