Move/coalesce CompressDebugSections enum to std.zig.CompressDebugSections

lib/std/Build/Step/Compile.zig

@@ -34,8 +34,7 @@ kind: Kind,
 major_only_filename: ?[]const u8,
 name_only_filename: ?[]const u8,
 formatted_panics: ?bool = null,
-// keep in sync with src/link.zig:CompressDebugSections
+compress_debug_sections: std.zig.CompressDebugSections = .none,
-compress_debug_sections: enum { none, zlib, zstd } = .none,
 verbose_link: bool,
 verbose_cc: bool,
 bundle_compiler_rt: ?bool = null,

lib/std/zig.zig

@@ -377,6 +377,8 @@ pub const Subsystem = enum {
     pub const EfiRuntimeDriver: Subsystem = .efi_runtime_driver;
 };
 
+pub const CompressDebugSections = enum { none, zlib, zstd };
+
 /// Renders a `std.Target.Cpu` value into a textual representation that can be parsed
 /// via the `-mcpu` flag passed to the Zig compiler.
 /// Appends the result to `buffer`.

src/Compilation.zig

@@ -1730,7 +1730,7 @@ pub const CreateOptions = struct {
     linker_tsaware: bool = false,
     linker_nxcompat: bool = false,
     linker_dynamicbase: bool = true,
-    linker_compress_debug_sections: ?link.File.Lld.Elf.CompressDebugSections = null,
+    linker_compress_debug_sections: ?std.zig.CompressDebugSections = null,
     linker_module_definition_file: ?[]const u8 = null,
     linker_sort_section: ?link.File.Lld.Elf.SortSection = null,
     major_subsystem_version: ?u16 = null,

src/link.zig

@@ -428,7 +428,7 @@ pub const File = struct {
         tsaware: bool,
         nxcompat: bool,
         dynamicbase: bool,
-        compress_debug_sections: Lld.Elf.CompressDebugSections,
+        compress_debug_sections: std.zig.CompressDebugSections,
         bind_global_refs_locally: bool,
         import_symbols: bool,
         import_table: bool,

src/link/Lld.zig

@@ -95,11 +95,12 @@ pub const Elf = struct {
     soname: ?[]const u8,
     allow_undefined_version: bool,
     enable_new_dtags: ?bool,
-    compress_debug_sections: CompressDebugSections,
+    compress_debug_sections: std.zig.CompressDebugSections,
     bind_global_refs_locally: bool,
     pub const HashStyle = enum { sysv, gnu, both };
     pub const SortSection = enum { name, alignment };
-    pub const CompressDebugSections = enum { none, zlib, zstd };
+    /// Deprecated; use 'std.zig.CompressDebugSections' instead. To be removed after 0.16.0 is tagged.
+    pub const CompressDebugSections = std.zig.CompressDebugSections;
 
     fn init(comp: *Compilation, options: link.File.OpenOptions) !Elf {
         const PtrWidth = enum { p32, p64 };

src/main.zig

@@ -850,7 +850,7 @@ fn buildOutputType(
     var disable_c_depfile = false;
     var linker_sort_section: ?link.File.Lld.Elf.SortSection = null;
     var linker_gc_sections: ?bool = null;
-    var linker_compress_debug_sections: ?link.File.Lld.Elf.CompressDebugSections = null;
+    var linker_compress_debug_sections: ?std.zig.CompressDebugSections = null;
     var linker_allow_shlib_undefined: ?bool = null;
     var allow_so_scripts: bool = false;
     var linker_bind_global_refs_locally: ?bool = null;
@@ -1167,11 +1167,11 @@ fn buildOutputType(
                     } else if (mem.eql(u8, arg, "-install_name")) {
                         install_name = args_iter.nextOrFatal();
                     } else if (mem.cutPrefix(u8, arg, "--compress-debug-sections=")) |param| {
-                        linker_compress_debug_sections = std.meta.stringToEnum(link.File.Lld.Elf.CompressDebugSections, param) orelse {
+                        linker_compress_debug_sections = std.meta.stringToEnum(std.zig.CompressDebugSections, param) orelse {
                             fatal("expected --compress-debug-sections=[none|zlib|zstd], found '{s}'", .{param});
                         };
                     } else if (mem.eql(u8, arg, "--compress-debug-sections")) {
-                        linker_compress_debug_sections = link.File.Lld.Elf.CompressDebugSections.zlib;
+                        linker_compress_debug_sections = .zlib;
                     } else if (mem.eql(u8, arg, "-pagezero_size")) {
                         const next_arg = args_iter.nextOrFatal();
                         pagezero_size = std.fmt.parseUnsigned(u64, eatIntPrefix(next_arg, 16), 16) catch |err| {
@@ -2335,7 +2335,7 @@ fn buildOutputType(
                         if (it.only_arg.len == 0) {
                             linker_compress_debug_sections = .zlib;
                         } else {
-                            linker_compress_debug_sections = std.meta.stringToEnum(link.File.Lld.Elf.CompressDebugSections, it.only_arg) orelse {
+                            linker_compress_debug_sections = std.meta.stringToEnum(std.zig.CompressDebugSections, it.only_arg) orelse {
                                 fatal("expected [none|zlib|zstd] after --compress-debug-sections, found '{s}'", .{it.only_arg});
                             };
                         }
@@ -2523,7 +2523,7 @@ fn buildOutputType(
                     try linker_export_symbol_names.append(arena, linker_args_it.nextOrFatal());
                 } else if (mem.eql(u8, arg, "--compress-debug-sections")) {
                     const arg1 = linker_args_it.nextOrFatal();
-                    linker_compress_debug_sections = std.meta.stringToEnum(link.File.Lld.Elf.CompressDebugSections, arg1) orelse {
+                    linker_compress_debug_sections = std.meta.stringToEnum(std.zig.CompressDebugSections, arg1) orelse {
                         fatal("expected [none|zlib|zstd] after --compress-debug-sections, found '{s}'", .{arg1});
                     };
                 } else if (mem.cutPrefix(u8, arg, "-z")) |z_rest| {