diff --git a/lib/std/Build.zig b/lib/std/Build.zig
index 65e2db3d1d..9d8c7455a3 100644
--- a/lib/std/Build.zig
+++ b/lib/std/Build.zig
@@ -81,9 +81,6 @@ enable_wine: bool = false,
 /// that contains the path `aarch64-linux-gnu/lib/ld-linux-aarch64.so.1`.
 glibc_runtimes_dir: ?[]const u8 = null,
 
-/// Deprecated. Use `b.graph.host`.
-host: ResolvedTarget,
-
 dep_prefix: []const u8 = "",
 
 modules: std.StringArrayHashMap(*Module),
@@ -301,7 +298,6 @@ pub fn create(
         },
         .install_path = undefined,
         .args = null,
-        .host = graph.host,
         .modules = .init(arena),
         .named_writefiles = .init(arena),
         .named_lazy_paths = .init(arena),
@@ -393,7 +389,6 @@ fn createChildOnly(
         .enable_wasmtime = parent.enable_wasmtime,
         .enable_wine = parent.enable_wine,
         .glibc_runtimes_dir = parent.glibc_runtimes_dir,
-        .host = parent.host,
         .dep_prefix = parent.fmt("{s}{s}.", .{ parent.dep_prefix, dep_name }),
         .modules = .init(allocator),
         .named_writefiles = .init(allocator),
diff --git a/lib/std/Build/Step/Compile.zig b/lib/std/Build/Step/Compile.zig
index 1dd444abf2..a85a67bd9b 100644
--- a/lib/std/Build/Step/Compile.zig
+++ b/lib/std/Build/Step/Compile.zig
@@ -583,9 +583,6 @@ pub fn checkObject(compile: *Compile) *Step.CheckObject {
     return Step.CheckObject.create(compile.step.owner, compile.getEmittedBin(), compile.rootModuleTarget().ofmt);
 }
 
-/// deprecated: use `setLinkerScript`
-pub const setLinkerScriptPath = setLinkerScript;
-
 pub fn setLinkerScript(compile: *Compile, source: LazyPath) void {
     const b = compile.step.owner;
     compile.linker_script = source.dupe(b);
@@ -675,11 +672,6 @@ pub fn linkLibCpp(compile: *Compile) void {
     compile.root_module.link_libcpp = true;
 }
 
-/// Deprecated. Use `c.root_module.addCMacro`.
-pub fn defineCMacro(c: *Compile, name: []const u8, value: ?[]const u8) void {
-    c.root_module.addCMacro(name, value orelse "1");
-}
-
 const PkgConfigResult = struct {
     cflags: []const []const u8,
     libs: []const []const u8,
@@ -805,16 +797,6 @@ pub fn linkFramework(c: *Compile, name: []const u8) void {
     c.root_module.linkFramework(name, .{});
 }
 
-/// Deprecated. Use `c.root_module.linkFramework`.
-pub fn linkFrameworkNeeded(c: *Compile, name: []const u8) void {
-    c.root_module.linkFramework(name, .{ .needed = true });
-}
-
-/// Deprecated. Use `c.root_module.linkFramework`.
-pub fn linkFrameworkWeak(c: *Compile, name: []const u8) void {
-    c.root_module.linkFramework(name, .{ .weak = true });
-}
-
 /// Handy when you have many C/C++ source files and want them all to have the same flags.
 pub fn addCSourceFiles(compile: *Compile, options: Module.AddCSourceFilesOptions) void {
     compile.root_module.addCSourceFiles(options);
diff --git a/lib/std/Build/Step/ObjCopy.zig b/lib/std/Build/Step/ObjCopy.zig
index 8f0f62e222..9b2c2d596f 100644
--- a/lib/std/Build/Step/ObjCopy.zig
+++ b/lib/std/Build/Step/ObjCopy.zig
@@ -135,9 +135,6 @@ pub fn create(
     return objcopy;
 }
 
-/// deprecated: use getOutput
-pub const getOutputSource = getOutput;
-
 pub fn getOutput(objcopy: *const ObjCopy) std.Build.LazyPath {
     return .{ .generated = .{ .file = &objcopy.output_file } };
 }
diff --git a/lib/std/Build/Step/Options.zig b/lib/std/Build/Step/Options.zig
index 41739dba47..44228bef20 100644
--- a/lib/std/Build/Step/Options.zig
+++ b/lib/std/Build/Step/Options.zig
@@ -390,20 +390,12 @@ pub fn addOptionPath(
     path.addStepDependencies(&options.step);
 }
 
-/// Deprecated: use `addOptionPath(options, name, artifact.getEmittedBin())` instead.
-pub fn addOptionArtifact(options: *Options, name: []const u8, artifact: *Step.Compile) void {
-    return addOptionPath(options, name, artifact.getEmittedBin());
-}
-
 pub fn createModule(options: *Options) *std.Build.Module {
     return options.step.owner.createModule(.{
         .root_source_file = options.getOutput(),
     });
 }
 
-/// deprecated: use `getOutput`
-pub const getSource = getOutput;
-
 /// Returns the main artifact of this Build Step which is a Zig source file
 /// generated from the key-value pairs of the Options.
 pub fn getOutput(options: *Options) LazyPath {
diff --git a/lib/std/Build/Step/Run.zig b/lib/std/Build/Step/Run.zig
index 6a2ebc6e9f..270090d07c 100644
--- a/lib/std/Build/Step/Run.zig
+++ b/lib/std/Build/Step/Run.zig
@@ -43,9 +43,6 @@ stdio: StdIo,
 /// It should be only set using `setStdIn`.
 stdin: StdIn,
 
-/// Deprecated: use `addFileInput`
-extra_file_dependencies: []const []const u8,
-
 /// Additional input files that, when modified, indicate that the Run step
 /// should be re-executed.
 /// If the Run step is determined to have side-effects, the Run step is always
@@ -178,7 +175,6 @@ pub fn create(owner: *std.Build, name: []const u8) *Run {
         .disable_zig_progress = false,
         .stdio = .infer_from_args,
         .stdin = .none,
-        .extra_file_dependencies = &.{},
         .file_inputs = .{},
         .rename_step_with_output_arg = true,
         .skip_foreign_checks = false,
@@ -364,16 +360,10 @@ pub fn addPrefixedOutputDirectoryArg(
     return .{ .generated = .{ .file = &output.generated_file } };
 }
 
-/// deprecated: use `addDirectoryArg`
-pub const addDirectorySourceArg = addDirectoryArg;
-
 pub fn addDirectoryArg(run: *Run, directory_source: std.Build.LazyPath) void {
     run.addPrefixedDirectoryArg("", directory_source);
 }
 
-// deprecated: use `addPrefixedDirectoryArg`
-pub const addPrefixedDirectorySourceArg = addPrefixedDirectoryArg;
-
 pub fn addPrefixedDirectoryArg(run: *Run, prefix: []const u8, directory_source: std.Build.LazyPath) void {
     const b = run.step.owner;
 
@@ -698,9 +688,6 @@ fn make(step: *Step, options: Step.MakeOptions) !void {
 
     hashStdIo(&man.hash, run.stdio);
 
-    for (run.extra_file_dependencies) |file_path| {
-        _ = try man.addFile(b.pathFromRoot(file_path), null);
-    }
     for (run.file_inputs.items) |lazy_path| {
         _ = try man.addFile(lazy_path.getPath2(b, step), null);
     }
diff --git a/test/standalone/extern/build.zig b/test/standalone/extern/build.zig
index ff8701bf40..1886408933 100644
--- a/test/standalone/extern/build.zig
+++ b/test/standalone/extern/build.zig
@@ -18,7 +18,7 @@ pub fn build(b: *std.Build) void {
         .optimize = optimize,
         .link_libc = true,
     });
-    if (b.graph.host.result.abi == .msvc) shared.defineCMacro("API", "__declspec(dllexport)");
+    if (b.graph.host.result.abi == .msvc) shared.root_module.addCMacro("API", "__declspec(dllexport)");
     shared.addCSourceFile(.{ .file = b.path("shared.c"), .flags = &.{} });
     const test_exe = b.addTest(.{
         .root_source_file = b.path("main.zig"),
diff --git a/test/standalone/issue_11595/build.zig b/test/standalone/issue_11595/build.zig
index d0592b546b..c37dfb12b5 100644
--- a/test/standalone/issue_11595/build.zig
+++ b/test/standalone/issue_11595/build.zig
@@ -30,16 +30,16 @@ pub fn build(b: *std.Build) void {
 
     var i: i32 = 0;
     while (i < 1000) : (i += 1) {
-        exe.defineCMacro("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA");
+        exe.root_module.addCMacro("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA");
     }
 
-    exe.defineCMacro("FOO", "42");
-    exe.defineCMacro("BAR", "\"BAR\"");
-    exe.defineCMacro("BAZ",
+    exe.root_module.addCMacro("FOO", "42");
+    exe.root_module.addCMacro("BAR", "\"BAR\"");
+    exe.root_module.addCMacro("BAZ",
         \\"\"BAZ\""
     );
-    exe.defineCMacro("QUX", "\"Q\" \"UX\"");
-    exe.defineCMacro("QUUX", "\"QU\\\"UX\"");
+    exe.root_module.addCMacro("QUX", "\"Q\" \"UX\"");
+    exe.root_module.addCMacro("QUUX", "\"QU\\\"UX\"");
 
     b.default_step.dependOn(&exe.step);
 
diff --git a/test/standalone/stack_iterator/build.zig b/test/standalone/stack_iterator/build.zig
index 38f66edd9f..20027428b0 100644
--- a/test/standalone/stack_iterator/build.zig
+++ b/test/standalone/stack_iterator/build.zig
@@ -72,7 +72,7 @@ pub fn build(b: *std.Build) void {
         });
 
         if (target.result.os.tag == .windows)
-            c_shared_lib.defineCMacro("LIB_API", "__declspec(dllexport)");
+            c_shared_lib.root_module.addCMacro("LIB_API", "__declspec(dllexport)");
 
         c_shared_lib.addCSourceFile(.{
             .file = b.path("shared_lib.c"),
diff --git a/test/tests.zig b/test/tests.zig
index 572838a2ea..d1102ff066 100644
--- a/test/tests.zig
+++ b/test/tests.zig
@@ -1704,7 +1704,7 @@ pub fn addCAbiTests(b: *std.Build, options: CAbiTestOptions) *Step {
                 .file = b.path("test/c_abi/cfuncs.c"),
                 .flags = &.{"-std=c99"},
             });
-            for (c_abi_target.c_defines) |define| test_step.defineCMacro(define, null);
+            for (c_abi_target.c_defines) |define| test_step.root_module.addCMacro(define, "1");
 
             // This test is intentionally trying to check if the external ABI is
             // done properly. LTO would be a hindrance to this.