Target: Add objFileExt() convenience wrapper

Added the `objFileExt()` function to Target, streamlining access to target-specific data in a manner consistent with other convenience functions.

lib/compiler/aro/aro/Driver.zig

@@ -765,7 +765,7 @@ fn processSource(
         const fmt_template = "{s}{s}";
         const fmt_args = .{
             std.fs.path.stem(source.path),
-            d.comp.target.ofmt.fileExt(d.comp.target.abi, d.comp.target.cpu.arch),
+            d.comp.target.objFileExt(),
         };
         break :blk d.output_name orelse
             std.fmt.bufPrint(&name_buf, fmt_template, fmt_args) catch return d.fatal("Filename too long for filesystem: " ++ fmt_template, fmt_args);
@@ -781,7 +781,7 @@ fn processSource(
         const fmt_template = "/tmp/{s}{s}";
         const fmt_args = .{
             random_name,
-            d.comp.target.ofmt.fileExt(d.comp.target.abi, d.comp.target.cpu.arch),
+            d.comp.target.objFileExt(),
         };
         break :blk std.fmt.bufPrint(&name_buf, fmt_template, fmt_args) catch return d.fatal("Filename too long for filesystem: " ++ fmt_template, fmt_args);
     };

lib/std/Target.zig

@@ -2045,6 +2045,10 @@ pub fn exeFileExt(target: Target) [:0]const u8 {
     return target.os.tag.exeFileExt(target.cpu.arch);
 }
 
+pub fn objFileExt(target: Target) [:0]const u8 {
+    return target.ofmt.fileExt(target.abi, target.cpu.arch);
+}
+
 pub fn staticLibSuffix(target: Target) [:0]const u8 {
     return target.os.tag.staticLibSuffix(target.abi);
 }

lib/std/zig.zig

@@ -232,7 +232,7 @@ pub fn binNameAlloc(allocator: Allocator, options: BinNameOptions) error{OutOfMe
         .plan9 => switch (options.output_mode) {
             .Exe => return allocator.dupe(u8, root_name),
             .Obj => return std.fmt.allocPrint(allocator, "{s}{s}", .{
-                root_name, t.ofmt.fileExt(t.abi, t.cpu.arch),
+                root_name, t.objFileExt(),
             }),
             .Lib => return std.fmt.allocPrint(allocator, "{s}{s}.a", .{
                 t.libPrefix(), root_name,

src/Compilation.zig

@@ -4714,7 +4714,7 @@ fn updateCObject(comp: *Compilation, c_object: *CObject, c_obj_prog_node: std.Pr
         c_source_basename[0 .. c_source_basename.len - std.fs.path.extension(c_source_basename).len];
 
     const target = comp.getTarget();
-    const o_ext = target.ofmt.fileExt(target.abi, target.cpu.arch);
+    const o_ext = target.objFileExt();
     const digest = if (!comp.disable_c_depfile and try man.hit()) man.final() else blk: {
         var argv = std.ArrayList([]const u8).init(gpa);
         defer argv.deinit();
@@ -5972,7 +5972,7 @@ pub const FileExt = enum {
             .assembly => ".s",
             .assembly_with_cpp => ".S",
             .shared_library => target.dynamicLibSuffix(),
-            .object => target.ofmt.fileExt(target.abi, target.cpu.arch),
+            .object => target.objFileExt(),
             .static_library => target.staticLibSuffix(),
             .zig => ".zig",
             .def => ".def",

tools/docgen.zig

@@ -14,7 +14,7 @@ const fatal = std.zig.fatal;
 
 const max_doc_file_size = 10 * 1024 * 1024;
 
-const obj_ext = builtin.object_format.fileExt(builtin.abi, builtin.cpu.arch);
+const obj_ext = builtin.target.objFileExt();
 
 const usage =
     \\Usage: docgen [options] input output

tools/doctest.zig

@@ -107,7 +107,7 @@ fn printOutput(
     try env_map.put("CLICOLOR_FORCE", "1");
 
     const host = try std.zig.system.resolveTargetQuery(.{});
-    const obj_ext = builtin.object_format.fileExt(builtin.abi, builtin.cpu.arch);
+    const obj_ext = builtin.target.objFileExt();
     const print = std.debug.print;
 
     var shell_buffer = std.ArrayList(u8).init(arena);