std.Build: Remove anonymousDependency

build.zig

@@ -521,11 +521,10 @@ pub fn build(b: *std.Build) !void {
         optimization_modes,
         enable_macos_sdk,
         enable_ios_sdk,
-        false,
         enable_symlinks_windows,
     ));
     test_step.dependOn(tests.addCAbiTests(b, skip_non_native, skip_release));
-    test_step.dependOn(tests.addLinkTests(b, enable_macos_sdk, enable_ios_sdk, false, enable_symlinks_windows));
+    test_step.dependOn(tests.addLinkTests(b, enable_macos_sdk, enable_ios_sdk, enable_symlinks_windows));
     test_step.dependOn(tests.addStackTraceTests(b, test_filters, optimization_modes));
     test_step.dependOn(tests.addCliTests(b));
     test_step.dependOn(tests.addAssembleAndLinkTests(b, test_filters, optimization_modes));

build.zig.zon

@@ -0,0 +1,15 @@
+// The Zig compiler is not intended to be consumed as a package.
+// The sole purpose of this manifest file is to test the compiler.
+.{
+    .name = "zig",
+    .version = "0.0.0",
+    .dependencies = .{
+        .standalone_test_cases = .{
+            .path = "test/standalone",
+        },
+        .link_test_cases = .{
+            .path = "test/link",
+        },
+    },
+    .paths = .{""},
+}

lib/std/Build.zig

@@ -1973,25 +1973,6 @@ pub fn dependencyFromBuildZig(
     debug.panic("'{}' is not a build.zig struct of a dependecy in '{s}'", .{ build_zig, full_path });
 }
 
-pub fn anonymousDependency(
-    b: *Build,
-    /// The path to the directory containing the dependency's build.zig file,
-    /// relative to the current package's build.zig.
-    relative_build_root: []const u8,
-    /// A direct `@import` of the build.zig of the dependency.
-    comptime build_zig: type,
-    args: anytype,
-) *Dependency {
-    const arena = b.allocator;
-    const build_root = b.build_root.join(arena, &.{relative_build_root}) catch @panic("OOM");
-    const name = arena.dupe(u8, relative_build_root) catch @panic("OOM");
-    for (name) |*byte| switch (byte.*) {
-        '/', '\\' => byte.* = '.',
-        else => continue,
-    };
-    return dependencyInner(b, name, build_root, build_zig, "anonymous", &.{}, args);
-}
-
 fn userValuesAreSame(lhs: UserValue, rhs: UserValue) bool {
     switch (lhs) {
         .flag => {},
@@ -2039,7 +2020,7 @@ fn userValuesAreSame(lhs: UserValue, rhs: UserValue) bool {
     return true;
 }
 
-pub fn dependencyInner(
+fn dependencyInner(
     b: *Build,
     name: []const u8,
     build_root_string: []const u8,

test/link/build.zig

@@ -0,0 +1,54 @@
+const std = @import("std");
+const builtin = @import("builtin");
+const link = @import("link.zig");
+
+pub fn build(b: *std.Build) void {
+    const step = b.step("test", "Run link test cases");
+    b.default_step = step;
+
+    const enable_ios_sdk = b.option(bool, "enable_ios_sdk", "Run tests requiring presence of iOS SDK and frameworks") orelse false;
+    const enable_macos_sdk = b.option(bool, "enable_macos_sdk", "Run tests requiring presence of macOS SDK and frameworks") orelse enable_ios_sdk;
+    const enable_symlinks_windows = b.option(bool, "enable_symlinks_windows", "Run tests requiring presence of symlinks on Windows") orelse false;
+    const omit_symlinks = builtin.os.tag == .windows and !enable_symlinks_windows;
+
+    const build_opts: link.BuildOptions = .{
+        .has_ios_sdk = enable_ios_sdk,
+        .has_macos_sdk = enable_macos_sdk,
+        .has_symlinks_windows = omit_symlinks,
+    };
+    step.dependOn(@import("elf.zig").testAll(b, build_opts));
+    step.dependOn(@import("macho.zig").testAll(b, build_opts));
+
+    add_dep_steps: for (b.available_deps) |available_dep| {
+        const dep_name, const dep_hash = available_dep;
+
+        const all_pkgs = @import("root").dependencies.packages;
+        inline for (@typeInfo(all_pkgs).Struct.decls) |decl| {
+            const pkg_hash = decl.name;
+            if (std.mem.eql(u8, dep_hash, pkg_hash)) {
+                const pkg = @field(all_pkgs, pkg_hash);
+                if (!@hasDecl(pkg, "build_zig")) {
+                    std.debug.panic("link test case '{s}' is missing a 'build.zig' file", .{dep_name});
+                }
+                const requires_ios_sdk = @hasDecl(pkg.build_zig, "requires_ios_sdk") and
+                    pkg.build_zig.requires_ios_sdk;
+                const requires_macos_sdk = @hasDecl(pkg.build_zig, "requires_macos_sdk") and
+                    pkg.build_zig.requires_macos_sdk;
+                const requires_symlinks = @hasDecl(pkg.build_zig, "requires_symlinks") and
+                    pkg.build_zig.requires_symlinks;
+                if ((requires_symlinks and omit_symlinks) or
+                    (requires_macos_sdk and !enable_macos_sdk) or
+                    (requires_ios_sdk and !enable_ios_sdk))
+                {
+                    continue :add_dep_steps;
+                }
+                break;
+            }
+        } else unreachable;
+
+        const dep = b.dependency(dep_name, .{});
+        const dep_step = dep.builder.default_step;
+        dep_step.name = b.fmt("link_test_cases.{s}", .{dep_name});
+        step.dependOn(dep_step);
+    }
+}

test/link/build.zig.zon

@@ -0,0 +1,69 @@
+.{
+    .name = "link_test_cases",
+    .version = "0.0.0",
+    .dependencies = .{
+        .bss = .{
+            .path = "bss",
+        },
+        .common_symbols_alignment = .{
+            .path = "common_symbols_alignment",
+        },
+        .interdependent_static_c_libs = .{
+            .path = "interdependent_static_c_libs",
+        },
+        .static_libs_from_object_files = .{
+            .path = "static_libs_from_object_files",
+        },
+        .glibc_compat = .{
+            .path = "glibc_compat",
+        },
+        // WASM Cases
+        .wasm_archive = .{
+            .path = "wasm/archive",
+        },
+        .wasm_basic_features = .{
+            .path = "wasm/basic-features",
+        },
+        .wasm_bss = .{
+            .path = "wasm/bss",
+        },
+        .wasm_export = .{
+            .path = "wasm/export",
+        },
+        .wasm_export_data = .{
+            .path = "wasm/export-data",
+        },
+        .wasm_extern = .{
+            .path = "wasm/extern",
+        },
+        .wasm_extern_mangle = .{
+            .path = "wasm/extern-mangle",
+        },
+        .wasm_function_table = .{
+            .path = "wasm/function-table",
+        },
+        .wasm_infer_features = .{
+            .path = "wasm/infer-features",
+        },
+        .wasm_producers = .{
+            .path = "wasm/producers",
+        },
+        .wasm_segments = .{
+            .path = "wasm/segments",
+        },
+        .wasm_shared_memory = .{
+            .path = "wasm/shared-memory",
+        },
+        .wasm_stack_pointer = .{
+            .path = "wasm/stack_pointer",
+        },
+        .wasm_type = .{
+            .path = "wasm/type",
+        },
+    },
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "link.zig",
+    },
+}