std.Build: add support for passing comptime_int, float and comptime_float options

Author: Lzard

lib/std/Build.zig

@@ -465,13 +465,20 @@ fn userInputOptionsFromArgs(allocator: Allocator, args: anytype) UserInputOption
                         .used = false,
                     }) catch @panic("OOM");
                 },
-                .Int => {
+                .ComptimeInt, .Int => {
                     user_input_options.put(field.name, .{
                         .name = field.name,
                         .value = .{ .scalar = std.fmt.allocPrint(allocator, "{d}", .{v}) catch @panic("OOM") },
                         .used = false,
                     }) catch @panic("OOM");
                 },
+                .ComptimeFloat, .Float => {
+                    user_input_options.put(field.name, .{
+                        .name = field.name,
+                        .value = .{ .scalar = std.fmt.allocPrint(allocator, "{e}", .{v}) catch @panic("OOM") },
+                        .used = false,
+                    }) catch @panic("OOM");
+                },
                 else => @compileError("option '" ++ field.name ++ "' has unsupported type: " ++ @typeName(T)),
             },
         }