DoxigAlpha
std › Build › runAllowFail

runAllowFail

Function parameters

Parameters

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b:*Build
argv:[]const []const u8
out_code:*u8
stderr_behavior:std.process.Child.StdIo

Type definitions in this namespace

Types

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Graph
Shared state among all Build instances.
GeneratedFile
A file that is generated by a build step.
LazyPath
A reference to an existing or future path.
ResolvedTarget
A pair of target query and fully resolved target.

Functions in this namespace

Functions

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resolveInstallPrefix
This function is intended to be called by lib/build_runner.zig, not a build.zig file.
addOptions
Create a set of key-value pairs that can be converted into a Zig source
addTest
Creates an executable containing unit tests.
addModule
This function creates a module and adds it to the package's module set, making
createModule
This function creates a private module, to be used by the current package,
addSystemCommand
Initializes a `Step.Run` with argv, which must at least have the path to the
addRunArtifact
Creates a `Step.Run` with an executable built with `addExecutable`.
addConfigHeader
Using the `values` provided, produces a C header file, possibly based on a
dupe
Allocator.dupe without the need to handle out of memory.
dupeStrings
Duplicates an array of strings without the need to handle out of memory.
dupePath
Duplicates a path and converts all slashes to the OS's canonical path separator.
option
Creates a configuration option to be passed to the build.zig script.
standardTargetOptions
Exposes standard `zig build` options for choosing a target and additionally
parseTargetQuery
Obtain a target query from a string, reporting diagnostics to stderr if the
standardTargetOptionsQueryOnly
Exposes standard `zig build` options for choosing a target.
installArtifact
This creates the install step and adds it to the dependencies of the
addInstallArtifact
This merely creates the step; it does not add it to the dependencies of the
installFile
`dest_rel_path` is relative to prefix path
installBinFile
`dest_rel_path` is relative to bin path
installLibFile
`dest_rel_path` is relative to lib path
addInstallFile
`dest_rel_path` is relative to install prefix path
addInstallBinFile
`dest_rel_path` is relative to bin path
addInstallLibFile
`dest_rel_path` is relative to lib path
addInstallHeaderFile
`dest_rel_path` is relative to header path
path
References a file or directory relative to the source root.
pathFromRoot
This is low-level implementation details of the build system, not meant to
run
This is a helper function to be called from build.zig scripts, *not* from
lazyDependency
When this function is called, it means that the current build does, in
lazyImport
In a build.zig file, this function is to `@import` what `lazyDependency` is to `dependency`.
dumpBadGetPathHelp
In this function the stderr mutex has already been locked.
makeTempPath
This function is intended to be called in the `configure` phase only.
resolveTargetQuery
Converts a target query into a fully resolved target that can be passed to

Error sets in this namespace

Error Sets

#

Source

Implementation

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pub fn runAllowFail(
    b: *Build,
    argv: []const []const u8,
    out_code: *u8,
    stderr_behavior: std.process.Child.StdIo,
) RunError![]u8 {
    assert(argv.len != 0);

    if (!process.can_spawn)
        return error.ExecNotSupported;

    const max_output_size = 400 * 1024;
    var child = std.process.Child.init(argv, b.allocator);
    child.stdin_behavior = .Ignore;
    child.stdout_behavior = .Pipe;
    child.stderr_behavior = stderr_behavior;
    child.env_map = &b.graph.env_map;

    try Step.handleVerbose2(b, null, child.env_map, argv);
    try child.spawn();

    const stdout = child.stdout.?.deprecatedReader().readAllAlloc(b.allocator, max_output_size) catch {
        return error.ReadFailure;
    };
    errdefer b.allocator.free(stdout);

    const term = try child.wait();
    switch (term) {
        .Exited => |code| {
            if (code != 0) {
                out_code.* = @as(u8, @truncate(code));
                return error.ExitCodeFailure;
            }
            return stdout;
        },
        .Signal, .Stopped, .Unknown => |code| {
            out_code.* = @as(u8, @truncate(code));
            return error.ProcessTerminated;
        },
    }
}