1const std = @import("std");
 2
 3/// place uninitialized global variables in a common block
 4common: bool,
 5/// Place each function into its own section in the output file if the target supports arbitrary sections
 6func_sections: bool,
 7/// Place each data item into its own section in the output file if the target supports arbitrary sections
 8data_sections: bool,
 9pic_level: PicLevel,
10/// Generate position-independent code that can only be linked into executables
11is_pie: bool,
12optimization_level: OptimizationLevel,
13/// Generate debug information
14debug: DebugFormat,
15dwarf_version: DwarfVersion,
16
17pub const DebugFormat = union(enum) {
18    strip,
19    dwarf: std.dwarf.Format,
20    code_view,
21};
22
23pub const DwarfVersion = enum(u3) {
24    @"0" = 0,
25    @"2" = 2,
26    @"3" = 3,
27    @"4" = 4,
28    @"5" = 5,
29};
30
31pub const PicLevel = enum(u8) {
32    /// Do not generate position-independent code
33    none = 0,
34    /// Generate position-independent code (PIC) suitable for use in a shared library, if supported for the target machine.
35    one = 1,
36    /// If supported for the target machine, emit position-independent code, suitable for dynamic linking and avoiding
37    /// any limit on the size of the global offset table.
38    two = 2,
39};
40
41pub const OptimizationLevel = enum {
42    @"0",
43    @"1",
44    @"2",
45    @"3",
46    /// Optimize for size
47    s,
48    /// Disregard strict standards compliance
49    fast,
50    /// Optimize debugging experience
51    g,
52    /// Optimize aggressively for size rather than speed
53    z,
54
55    const level_map = std.StaticStringMap(OptimizationLevel).initComptime(.{
56        .{ "0", .@"0" },
57        .{ "1", .@"1" },
58        .{ "2", .@"2" },
59        .{ "3", .@"3" },
60        .{ "s", .s },
61        .{ "fast", .fast },
62        .{ "g", .g },
63        .{ "z", .z },
64    });
65
66    pub fn fromString(str: []const u8) ?OptimizationLevel {
67        return level_map.get(str);
68    }
69
70    pub fn isSizeOptimized(self: OptimizationLevel) bool {
71        return switch (self) {
72            .s, .z => true,
73            .@"0", .@"1", .@"2", .@"3", .fast, .g => false,
74        };
75    }
76
77    pub fn hasAnyOptimizations(self: OptimizationLevel) bool {
78        return switch (self) {
79            .@"0" => false,
80            .@"1", .@"2", .@"3", .s, .fast, .g, .z => true,
81        };
82    }
83};
84
85pub const default: @This() = .{
86    .common = false,
87    .func_sections = false,
88    .data_sections = false,
89    .pic_level = .none,
90    .is_pie = false,
91    .optimization_level = .@"0",
92    .debug = .strip,
93    .dwarf_version = .@"0",
94};