Add FreeBSD support

Following 7aeadb06ee

src/Command.zig

@@ -323,7 +323,7 @@ fn setupFd(src: File.Handle, target: i32) !void {
                 }
             }
         },
-        .ios, .macos => {
+        .freebsd, .ios, .macos => {
             // Mac doesn't support dup3 so we use dup2. We purposely clear
             // CLO_ON_EXEC for this fd.
             const flags = try posix.fcntl(src, posix.F.GETFD, 0);

src/apprt/gtk/App.zig

@@ -143,8 +143,8 @@ pub fn init(core_app: *CoreApp, opts: Options) !App {
     if (config.@"async-backend" != .auto) {
         const result: bool = switch (config.@"async-backend") {
             .auto => unreachable,
-            .epoll => xev.prefer(.epoll),
+            .epoll => if (comptime xev.dynamic) xev.prefer(.epoll) else false,
-            .io_uring => xev.prefer(.io_uring),
+            .io_uring =>  if (comptime xev.dynamic) xev.prefer(.io_uring) else false,
         };
 
         if (result) {

src/config/Config.zig

@@ -2817,7 +2817,7 @@ pub fn loadCliArgs(self: *Config, alloc_gpa: Allocator) !void {
         .windows => {},
 
         // Fast-path if we are Linux and have no args.
-        .linux => if (std.os.argv.len <= 1) return,
+        .linux, .freebsd => if (std.os.argv.len <= 1) return,
 
         // Everything else we have to at least try because it may
         // not use std.os.argv.
@@ -2835,7 +2835,7 @@ pub fn loadCliArgs(self: *Config, alloc_gpa: Allocator) !void {
     //     styling, etc. based on the command.
     //
     // See: https://github.com/Vladimir-csp/xdg-terminal-exec
-    if (comptime builtin.os.tag == .linux) {
+    if ((comptime builtin.os.tag == .linux) or (comptime builtin.os.tag == .freebsd)) {
         if (internal_os.xdg.parseTerminalExec(std.os.argv)) |args| {
             const arena_alloc = self._arena.?.allocator();
 

src/input/keycodes.zig

@@ -11,7 +11,7 @@ pub const entries: []const Entry = entries: {
     const native_idx = switch (builtin.os.tag) {
         .ios, .macos => 4, // mac
         .windows => 3, // win
-        .linux => 2, // xkb
+        .freebsd, .linux => 2, // xkb
         else => @compileError("unsupported platform"),
     };
 

src/os/desktop.zig

@@ -56,6 +56,9 @@ pub fn launchedFromDesktop() bool {
         // iPhone/iPad is always launched from the "desktop"
         .ios => true,
 
+        // Assume we are launching from the "desktop"
+        .freebsd => true,
+
         else => @compileError("unsupported platform"),
     };
 }

src/os/homedir.zig

@@ -14,7 +14,7 @@ const Error = error{
 /// is generally an expensive process so the value should be cached.
 pub inline fn home(buf: []u8) !?[]const u8 {
     return switch (builtin.os.tag) {
-        inline .linux, .macos => try homeUnix(buf),
+        inline .linux, .freebsd, .macos => try homeUnix(buf),
         .windows => try homeWindows(buf),
 
         // iOS doesn't have a user-writable home directory
@@ -122,7 +122,7 @@ pub const ExpandError = error{
 /// than `buf.len`.
 pub fn expandHome(path: []const u8, buf: []u8) ExpandError![]const u8 {
     return switch (builtin.os.tag) {
-        .linux, .macos => try expandHomeUnix(path, buf),
+        .linux, .freebsd, .macos => try expandHomeUnix(path, buf),
         .ios => return path,
         else => @compileError("unimplemented"),
     };

src/os/i18n.zig

@@ -69,8 +69,9 @@ pub const InitError = error{
 /// used by libghostty.
 pub fn init(resources_dir: []const u8) InitError!void {
     // i18n is unsupported on Windows
-    if (builtin.os.tag == .windows) return;
+    switch (builtin.os.tag) {
-
+        .windows, .freebsd => return,
+        else => {
             // Our resources dir is always nested below the share dir that
             // is standard for translations.
             const share_dir = std.fs.path.dirname(resources_dir) orelse
@@ -85,6 +86,7 @@ pub fn init(resources_dir: []const u8) InitError!void {
             log.debug("binding domain={s} path={s}", .{ build_config.bundle_id, path });
             _ = bindtextdomain(build_config.bundle_id, path.ptr) orelse
                 return error.OutOfMemory;
+    }}
 }
 
 /// Set the global gettext domain to our bundle ID, allowing unqualified

src/os/open.zig

@@ -19,7 +19,7 @@ pub fn open(
     url: []const u8,
 ) !void {
     const cmd: OpenCommand = switch (builtin.os.tag) {
-        .linux => .{ .child = std.process.Child.init(
+        .linux, .freebsd => .{ .child = std.process.Child.init(
             &.{ "xdg-open", url },
             alloc,
         ) },

src/pty.zig

@@ -99,6 +99,10 @@ const PosixPty = struct {
             @cInclude("sys/ioctl.h"); // ioctl and constants
             @cInclude("util.h"); // openpty()
         }),
+        .freebsd => @cImport({
+            @cInclude("termios.h"); // ioctl and constants
+            @cInclude("libutil.h"); // openpty()
+        }),
         else => @cImport({
             @cInclude("sys/ioctl.h"); // ioctl and constants
             @cInclude("pty.h");