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* Eliminate all uses of `std.debug.print` in make() functions, instead
properly using the step failure reporting mechanism.
* Introduce the concept of skipped build steps. These do not cause the
build to fail, and they do allow their dependants to run.
* RunStep gains a new flag, `skip_foreign_checks` which causes the
RunStep to be skipped if stdio mode is `check` and the binary cannot
be executed due to it being a foreign executable.
- RunStep is improved to automatically use known interpreters to
execute binaries if possible (integrating with flags such as
-fqemu and -fwasmtime). It only does this after attempting a native
execution and receiving a "exec file format" error.
- Update RunStep to use an ArrayList for the checks rather than this
ad-hoc reallocation/copying mechanism.
- `expectStdOutEqual` now also implicitly adds an exit_code==0 check
if there is not already an expected termination. This matches
previously expected behavior from older API and can be overridden by
directly setting the checks array.
* Add `dest_sub_path` to `InstallArtifactStep` which allows choosing an
arbitrary subdirectory relative to the prefix, as well as overriding
the basename.
- Delete the custom InstallWithRename step that I found deep in the
test/ directory.
* WriteFileStep will now update its step display name after the first
file is added.
* Add missing stdout checks to various standalone test case build
scripts.
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Rework std.Build.Step to have an `owner: *Build` field. This
simplified the implementation of installation steps, as well as provided
some much-needed common API for the new parallelized build system.
--verbose is now defined very concretely: it prints to stderr just
before spawning a child process.
Child process execution is updated to conform to the new
parallel-friendly make() function semantics.
DRY up the failWithCacheError handling code. It now integrates properly
with the step graph instead of incorrectly dumping to stderr and calling
process exit.
In the main CLI, fix `zig fmt` crash when there are no errors and stdin
is used.
Deleted steps:
* EmulatableRunStep - this entire thing can be removed in favor of a
flag added to std.Build.RunStep called `skip_foreign_checks`.
* LogStep - this doesn't really fit with a multi-threaded build runner
and is effectively superseded by the new build summary output.
build runner:
* add -fsummary and -fno-summary to override the default behavior,
which is to print a summary if any of the build steps fail.
* print the dep prefix when emitting error messages for steps.
std.Build.FmtStep:
* This step now supports exclude paths as well as a check flag.
* The check flag decides between two modes, modify mode, and check
mode. These can be used to update source files in place, or to fail
the build, respectively.
Zig's own build.zig:
* The `test-fmt` step will do all the `zig fmt` checking that we expect
to be done. Since the `test` step depends on this one, we can simply
remove the explicit call to `zig fmt` in the CI.
* The new `fmt` step will actually perform `zig fmt` and update source
files in place.
std.Build.RunStep:
* expose max_stdio_size is a field (previously an unchangeable
hard-coded value).
* rework the API. Instead of configuring each stream independently,
there is a `stdio` field where you can choose between
`infer_from_args`, `inherit`, or `check`. These determine whether the
RunStep is considered to have side-effects or not. The previous
field, `condition` is gone.
* when stdio mode is set to `check` there is a slice of any number of
checks to make, which include things like exit code, stderr matching,
or stdout matching.
* remove the ill-defined `print` field.
* when adding an output arg, it takes the opportunity to give itself a
better name.
* The flag `skip_foreign_checks` is added. If this is true, a RunStep
which is configured to check the output of the executed binary will
not fail the build if the binary cannot be executed due to being for
a foreign binary to the host system which is running the build graph.
Command-line arguments such as -fqemu and -fwasmtime may affect
whether a binary is detected as foreign, as well as system
configuration such as Rosetta (macOS) and binfmt_misc (Linux).
- This makes EmulatableRunStep no longer needed.
* Fix the child process handling to properly integrate with the new
bulid API and to avoid deadlocks in stdout/stderr streams by polling
if necessary.
std.Build.RemoveDirStep now uses the open build_root directory handle
instead of an absolute path.
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This prevents compilation errors from being emitted twice.
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Now building successfully works again.
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build runner is always compiled in debug mode, so the switch on
optimization here was silly.
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The compiler now provides a server protocol for an interactive session
with another process. The build runner uses this protocol to communicate
compilation errors semantically from zig compiler subprocesses to the
build runner.
The protocol is exposed via stdin/stdout, or on a network socket,
depending on whether the CLI flag `--listen=-` or e.g.
`--listen=127.0.0.1:1337` is used.
Additionally:
* add the zig version string to the build runner cache prefix
* remove --prominent-compile-errors CLI flag because it no longer does
anything. Compilation errors are now unconditionally displayed at the
bottom of the build summary output when using the terminal-based
build runner.
* Remove the color field from std.Build. The build steps are no longer
supposed to interact with stderr directly. Instead they communicate
semantically back to the build runner, which has its own logic about
TTY configuration.
* Use the cleanExit() pattern in the build runner.
* Build steps can now use error.MakeFailed when they have already
properly reported an error, or they can fail with any other error
code in which case the build runner will create a simple message
based on this error code.
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With this commit, the build runner now communicates progress towards
completion of the step graph to the terminal, while also printing the
stderr of child processes as soon as possible, without clobbering each
other, and without clobbering the CLI progress output.
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Instead of dumping directly to stderr. This prevents processes running
simultaneously from racing their stderr against each other.
For now it only reports at the end, but an improvement would be to
report as soon as a failed step occurs.
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After sorting the step stack so that dependencies can be popped before
their dependants are popped, there is still a situation left to handle
correctly:
Example:
A depends on:
B
C
D depends on:
E
F
They will be ordered like this:
A B C D E F
If there are 6+ cores, then all of them will be evaluated at once,
incorrectly evaluating A and D before their dependencies.
Starting evaluation of F and then E is correct, but waiting until they
are done is not correct because it should start working on B and C as
well.
This commit solves the problem by computing dependants in the dependency
loop checking logic, and then having workers queue up their dependants
when they finish their own work.
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This makes it so that when there is a tree of std.Build objects, only
one zig-cache is used (the top-level application) instead of polluting
package directories with zig-cache folders.
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* Use std.Build.Cache.Directory instead of a string for storing the
cache roots and build roots.
* Set up a std.Build.Cache in build_runner.zig and use it in
std.Build.RunStep for avoiding redundant work.
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And only detect native target in LibExeObjStep once, in create().
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I've been wanting to do this for along time.
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This function is needed when a library exposes one of its own library
dependency's headers as part of its own public API.
Also, improve error message when a file system error occurs during
install file step.
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The `zig build` command now makes `@import("@dependencies")` available
to the build runner package. It contains all the dependencies in a
generated file that looks something like this:
```zig
pub const imports = struct {
pub const foo = @import("foo");
pub const @"bar.baz" = @import("bar.baz");
};
pub const build_root = struct {
pub const foo = "<path>";
pub const @"bar.baz" = "<path>";
};
```
The build runner exports this import so that `std.build.Builder` can
access it. `std.build.Builder` uses it to implement the new `dependency`
function which can be used like so:
```zig
const libz_dep = b.dependency("libz", .{});
const libmp3lame_dep = b.dependency("libmp3lame", .{});
// ...
lib.linkLibrary(libz_dep.artifact("z"));
lib.linkLibrary(libmp3lame_dep.artifact("mp3lame"));
```
The `dependency` function calls the build.zig file of the dependency as
a child Builder, and then can be ransacked for its build steps via the
`artifact` function.
This commit also renames `dependency.id` to `dependency.name` in the
`build.zig.ini` file.
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After this commit, the self-hosted compiler does not offer the option to
use stage1 as a backend anymore.
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Closes #7668
Closes #12141
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stage2: change logic for detecting whether the main package is inside
the std package. Previously it relied on realpath() which is not portable.
This uses resolve() which is how imports already work.
* stage2: fix cleanup bug when creating Module
* flatten lib/std/special/* to lib/*
- this was motivated by making main_pkg_is_inside_std false for
compiler_rt & friends.
* rename "mini libc" to "universal libc"
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