Fixup optimize mode option

Author: hazeycode

build.zig

@@ -2,15 +2,11 @@ const std = @import("std");
 
 pub fn build(b: *std.Build) void {
     const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{
+        .preferred_optimize_mode = .ReleaseFast,
+    });
 
     const options = .{
-        .optimize = b.option(
-            std.builtin.OptimizeMode,
-            "optimize",
-            "Select optimization mode",
-        ) orelse b.standardOptimizeOption(.{
-            .preferred_optimize_mode = .ReleaseFast,
-        }),
         .enable_cross_platform_determinism = b.option(
             bool,
             "enable_cross_platform_determinism",
@@ -38,7 +34,7 @@ pub fn build(b: *std.Build) void {
         .name = "zmath-tests",
         .root_source_file = b.path("src/root.zig"),
         .target = target,
-        .optimize = options.optimize,
+        .optimize = optimize,
     });
     b.installArtifact(tests);
 
@@ -52,7 +48,7 @@ pub fn build(b: *std.Build) void {
         .name = "zmath-benchmarks",
         .root_source_file = b.path("src/benchmark.zig"),
         .target = target,
-        .optimize = options.optimize,
+        .optimize = optimize,
     });
     b.installArtifact(benchmarks);