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e9bee08f88
This is now no longer limited to targeting macOS natively but also tries to detect the sysroot when targeting different Apple platforms from macOS; for instance targeting iPhone Simulator from macOS. In this case, Zig will try detecting the SDK path by invoking `xcrun --sdk iphonesimulator --show-sdk-path`, and if the command fails because the SDK doesn't exist (case when having CLT installed only) or not having either Xcode or CLT installed, we simply return null signaling that the user has to provide the sysroot themselves.
45 lines
1.7 KiB
Zig
45 lines
1.7 KiB
Zig
// SPDX-License-Identifier: MIT
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// Copyright (c) 2015-2021 Zig Contributors
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// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
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// The MIT license requires this copyright notice to be included in all copies
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// and substantial portions of the software.
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const std = @import("std");
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const mem = std.mem;
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const Allocator = mem.Allocator;
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const Target = std.Target;
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pub const macos = @import("darwin/macos.zig");
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/// Detect SDK path on Darwin.
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/// Calls `xcrun --sdk <target_sdk> --show-sdk-path` which result can be used to specify
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/// `--sysroot` of the compiler.
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/// The caller needs to free the resulting path slice.
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pub fn getSDKPath(allocator: *Allocator, target: Target) !?[]u8 {
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const is_simulator_abi = target.abi == .simulator;
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const sdk = switch (target.os.tag) {
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.macos => "macosx",
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.ios => if (is_simulator_abi) "iphonesimulator" else "iphoneos",
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.watchos => if (is_simulator_abi) "watchsimulator" else "watchos",
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.tvos => if (is_simulator_abi) "appletvsimulator" else "appletvos",
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else => return null,
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};
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const argv = &[_][]const u8{ "xcrun", "--sdk", sdk, "--show-sdk-path" };
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const result = try std.ChildProcess.exec(.{ .allocator = allocator, .argv = argv });
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defer {
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allocator.free(result.stderr);
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allocator.free(result.stdout);
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}
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if (result.stderr.len != 0 or result.term.Exited != 0) {
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// We don't actually care if there were errors as this is best-effort check anyhow
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// and in the worst case the user can specify the sysroot manually.
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return null;
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}
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const sysroot = try allocator.dupe(u8, mem.trimRight(u8, result.stdout, "\r\n"));
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return sysroot;
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}
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test "" {
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_ = @import("darwin/macos.zig");
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}
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