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| 1 | //! This script updates the .c, .h, .s, and .S files that make up the start |
| 2 | //! files such as crt1.o. |
| 3 | //! |
| 4 | //! Example usage: |
| 5 | //! `zig run tools/update_freebsd_libc.zig -- ~/Downloads/freebsd-src .` |
| 6 | |
| 7 | const std = @import("std"); |
| 8 | |
| 9 | const exempt_files = [_][]const u8{ |
| 10 | // This file is maintained by a separate project and does not come from FreeBSD. |
| 11 | "abilists", |
| 12 | }; |
| 13 | |
| 14 | pub fn main() !void { |
| 15 | var arena_instance = std.heap.ArenaAllocator.init(std.heap.page_allocator); |
| 16 | defer arena_instance.deinit(); |
| 17 | const arena = arena_instance.allocator(); |
| 18 | |
| 19 | const args = try std.process.argsAlloc(arena); |
| 20 | const freebsd_src_path = args[1]; |
| 21 | const zig_src_path = args[2]; |
| 22 | |
| 23 | const dest_dir_path = try std.fmt.allocPrint(arena, "{s}/lib/libc/freebsd", .{zig_src_path}); |
| 24 | |
| 25 | var dest_dir = std.fs.cwd().openDir(dest_dir_path, .{ .iterate = true }) catch |err| { |
| 26 | std.log.err("unable to open destination directory '{s}': {s}", .{ |
| 27 | dest_dir_path, @errorName(err), |
| 28 | }); |
| 29 | std.process.exit(1); |
| 30 | }; |
| 31 | defer dest_dir.close(); |
| 32 | |
| 33 | var freebsd_src_dir = try std.fs.cwd().openDir(freebsd_src_path, .{}); |
| 34 | defer freebsd_src_dir.close(); |
| 35 | |
| 36 | // Copy updated files from upstream. |
| 37 | { |
| 38 | var walker = try dest_dir.walk(arena); |
| 39 | defer walker.deinit(); |
| 40 | |
| 41 | walk: while (try walker.next()) |entry| { |
| 42 | if (entry.kind != .file) continue; |
| 43 | if (std.mem.startsWith(u8, entry.basename, ".")) continue; |
| 44 | for (exempt_files) |p| { |
| 45 | if (std.mem.eql(u8, entry.path, p)) continue :walk; |
| 46 | } |
| 47 | |
| 48 | std.log.info("updating '{s}/{s}' from '{s}/{s}'", .{ |
| 49 | dest_dir_path, entry.path, |
| 50 | freebsd_src_path, entry.path, |
| 51 | }); |
| 52 | |
| 53 | freebsd_src_dir.copyFile(entry.path, dest_dir, entry.path, .{}) catch |err| { |
| 54 | std.log.warn("unable to copy '{s}/{s}' to '{s}/{s}': {s}", .{ |
| 55 | freebsd_src_path, entry.path, |
| 56 | dest_dir_path, entry.path, |
| 57 | @errorName(err), |
| 58 | }); |
| 59 | if (err == error.FileNotFound) { |
| 60 | try dest_dir.deleteFile(entry.path); |
| 61 | } |
| 62 | }; |
| 63 | } |
| 64 | } |
| 65 | } |
Alex Rønne Petersen <alex@alexrp.com> 2025-04-22 08:15:06+02:00
Signed by SSH key SHA256:7B/LJ7bpR1eX8aCXSr4mtd5M45VMPKcx9zY8e95b5QM
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