DoxigAlpha
std › Build › findProgram

findProgram

Function parameters

Parameters

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b:*Build
names:[]const []const u8
paths:[]const []const u8

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

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Source

Implementation

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pub fn findProgram(b: *Build, names: []const []const u8, paths: []const []const u8) error{FileNotFound}![]const u8 {
    // TODO report error for ambiguous situations
    for (b.search_prefixes.items) |search_prefix| {
        for (names) |name| {
            if (fs.path.isAbsolute(name)) {
                return name;
            }
            return tryFindProgram(b, b.pathJoin(&.{ search_prefix, "bin", name })) orelse continue;
        }
    }
    if (b.graph.env_map.get("PATH")) |PATH| {
        for (names) |name| {
            if (fs.path.isAbsolute(name)) {
                return name;
            }
            var it = mem.tokenizeScalar(u8, PATH, fs.path.delimiter);
            while (it.next()) |p| {
                return tryFindProgram(b, b.pathJoin(&.{ p, name })) orelse continue;
            }
        }
    }
    for (names) |name| {
        if (fs.path.isAbsolute(name)) {
            return name;
        }
        for (paths) |p| {
            return tryFindProgram(b, b.pathJoin(&.{ p, name })) orelse continue;
        }
    }
    return error.FileNotFound;
}