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SPIR-V cannot build libc, ssp, compiler-rt, etc at the time of this commit, so
prevent trying to build them.
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This was causing some crashes.
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* use a set instead of a list
* use of this flag currently requires LLD
* add documentation
* make it only a zig cc compatibility flag for now because I personally
think this is an anti-feature.
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Also clean up parsing of linker args - reuse `ArgsIterator`.
In MachO, ensure we add every symbol marked with `-u` as undefined
before proceeding with symbol resolution. Additionally, ensure those
symbols are never garbage collected.
MachO entry_in_dylib test: pass `-u _my_main` when linking executable
so that it is not incorrectly garbage collected by the linker.
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This makes progress be exposed to the top-level caller of update().
I tossed in a bonus change: when the `zig build` subcommand sees exit
code 2, it omits the "following command failed" line, and the build
runner uses exit code 2 when there are compile errors. This tidies up
the output on build failure by a little bit.
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sometimes this is more useful than SemanticVersion
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* Separate into a "WIP" struct and a "finished" struct.
* Use a bit of indirection for error notes to simplify ergonomics of
this data structure.
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Introduces std.zig.ErrorBundle which is a trivially serializeable set
of compilation errors. This is in the standard library so that both
the compiler and the build runner can use it. The idea is they will
use it to communicate compilation errors over a binary protocol.
The binary encoding of ErrorBundle is a bit problematic - I got a little
too aggressive with compaction. I need to change it in a follow-up
commit to use some indirection in the error message list, otherwise
iteration is too unergonomic. In fact it's so problematic right now that
the logic getAllErrorsAlloc() actually fails to produce a viable
ErrorBundle because it puts SourceLocation data in between the root
level ErrorMessage data.
This commit has a simplification - redundant logic for rendering AST
errors to stderr has been removed in favor of moving the logic for
lowering AST errors into AstGen. So even if we get parse errors, the
errors will get lowered into ZIR before being reported. I believe this
will be useful when working on --autofix. Either way, some redundant
brittle logic was happily deleted.
In Compilation, updateSubCompilation() is improved to properly perform
error reporting when a sub-compilation object fails. It no longer dumps
directly to stderr; instead it populates an ErrorBundle object, which
gets added to the parent one during getAllErrorsAlloc().
In package fetching code, instead of dumping directly to stderr, it now
populates an ErrorBundle object, and gets properly reported at the CLI
layer of abstraction.
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* CLI supports --listen to accept commands on a socket
* make it able to produce an updated executable while it is running
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Adds a new mechanism for `@tagName` function generation that doesn't
piggyback on the removed typedef system.
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- Fix assertion failure if AstGen failed on a multi-module file
- Cap number of per-error reference notes and total multi-module errors each at 5
- Always put "root of package" reference notes first
Resolves: #14499
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As of Clang 16.x, it will by default read extra flags from /etc/clang.
I'm sure the person who implemented this means well, but they have a lot
to learn about abstractions and where the appropriate boundaries between
them are. The road to hell is paved with good intentions. Fortunately it
can be disabled.
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Tested by: created a "hello world" C file and compiled with:
zig cc -v main.c -Wl,--sort-section=name -o main
... and verified the `--sort-section=name` is passed to ld.lld.
Refs https://github.com/zigchroot/zig-chroot/issues/1
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When the following is specified
```
$ zig build-obj -fcompiler-rt example.zig
```
the resulting relocatable object file will have the compiler-rt
unconditionally embedded inside.
```
$ nm example.o
...
0000000012345678 W __truncsfhf2
...
```
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std.Build.ConfigHeaderStep: support sentinel-terminated strings
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Co-authored-by: Veikka Tuominen <git@vexu.eu>
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Fixes #13970.
This fix makes test runners resolve package paths relative to the
directory the test runner is in. This means it is not possible to import
a file from outside the file tree root at the directory containing the
test runner.
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* improve error message when build manifest file is missing
* update std.zig.Ast to support ZON
* Compilation.AllErrors.Message: make the notes field a const slice
* move build manifest parsing logic into src/Manifest.zig and add more
checks, and make the checks integrate into the standard error
reporting code so that reported errors look sexy
closes #14290
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AstGen: detect and error on files included in multiple packages
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This avoids a warning that sometimes occurs when providing both a
-target argument that contains a version as well as the
-mmacosx-version-min argument. Zig provides the correct value in both
places, so it doesn't matter which one gets overridden.
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Previously, if a source file was referenced from multiple packages, it
just became owned by the first one AstGen happened to reach; this was a
problem, because it could lead to inconsistent behaviour in the compiler
based on a race condition. This could be fixed by just analyzing such
files multiple times - however, it was pointed out by Andrew that it
might make more sense to enforce files being part of at most a single
package. Having a file in multiple packages would not only impact
compile times (due to Sema having to run multiple times on potentially a
lot of code) but is also a confusing anti-pattern which more often than
not is a mistake on the part of the user.
Resolves: #13662
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By @Vexu's suggestion, since fetching the name from the parent package
is error-prone and complex, and optimising Package for size isn't really
a priority.
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This commit adds support for "-x language" for a couple of hand-picked
supported languages. There is no reason the list of supported languages
to not grow (e.g. add "c-header"), but I'd like to keep it small at the
start.
Alternative 1
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I first tried to add a new type "Language", and then add that to the
`CSourceFile`. But oh boy what a change it turns out to be. So I am
keeping myself tied to FileExt and see what you folks think.
Alternative 2
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I tried adding `Language: ?[]const u8` to `CSourceFile`. However, the
language/ext, whatever we want to call it, still needs to be interpreted
in the main loop: one kind of handling for source files, other kind of
handling for everything else.
Test case
---------
*standalone.c*
#include <iostream>
int main() {
std::cout << "elho\n";
}
Compile and run:
$ ./zig run -x c++ -lc++ standalone.c
elho
$ ./zig c++ -x c++ standalone.c -o standalone && ./standalone
elho
Fixes #10915
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These linker flags are required to build static ELF binaries that
can run under the Blink emulator:
https://github.com/jart/blink/issues/14
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Using zig cc with CMake on Windows was failing during compiler
detection. -nostdinc was causing the crt not to be linked, and Coff/lld.zig
assumed that wWinMainCRTStartup would be present in this case.
-nostdlib did not prevent the default behaviour of linking libc++ when
zig c++ was used. This caused libc++ to be built when CMake ran
ABI detection using zig c++, which fails as libcxxabi cannot compile
under MSVC.
- Change the behaviour of COFF -nostdinc to set /entry to the function that the
default CRT method for the specified subsystem would have called.
- Fix -ENTRY being passed twice if it was specified explicitly and -nostdlib was present.
- Add support for /pdb, /version, /implib, and /subsystem as linker args (passed by CMake)
- Remove -Ddisable-zstd, no longer needed
- Add -Ddisable-libcpp for use when bootstrapping on msvc
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