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std › Build › parseTargetQuery

parseTargetQuery

Obtain a target query from a string, reporting diagnostics to stderr if the parsing failed. Asserts that the diagnostics field of options is null. This use case is handled instead by calling std.Target.Query.parse directly.

Function parameters

Parameters

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options:std.Target.Query.ParseOptions

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 parseTargetQuery(options: std.Target.Query.ParseOptions) error{ParseFailed}!std.Target.Query {
    assert(options.diagnostics == null);
    var diags: Target.Query.ParseOptions.Diagnostics = .{};
    var opts_copy = options;
    opts_copy.diagnostics = &diags;
    return std.Target.Query.parse(opts_copy) catch |err| switch (err) {
        error.UnknownCpuModel => {
            std.debug.print("unknown CPU: '{s}'\navailable CPUs for architecture '{s}':\n", .{
                diags.cpu_name.?, @tagName(diags.arch.?),
            });
            for (diags.arch.?.allCpuModels()) |cpu| {
                std.debug.print(" {s}\n", .{cpu.name});
            }
            return error.ParseFailed;
        },
        error.UnknownCpuFeature => {
            std.debug.print(
                \\unknown CPU feature: '{s}'
                \\available CPU features for architecture '{s}':
                \\
            , .{
                diags.unknown_feature_name.?,
                @tagName(diags.arch.?),
            });
            for (diags.arch.?.allFeaturesList()) |feature| {
                std.debug.print(" {s}: {s}\n", .{ feature.name, feature.description });
            }
            return error.ParseFailed;
        },
        error.UnknownOperatingSystem => {
            std.debug.print(
                \\unknown OS: '{s}'
                \\available operating systems:
                \\
            , .{diags.os_name.?});
            inline for (std.meta.fields(Target.Os.Tag)) |field| {
                std.debug.print(" {s}\n", .{field.name});
            }
            return error.ParseFailed;
        },
        else => |e| {
            std.debug.print("unable to parse target '{s}': {s}\n", .{
                options.arch_os_abi, @errorName(e),
            });
            return error.ParseFailed;
        },
    };
}