Index: arguments.c
--- arguments.c.orig	2021-01-17 18:17:08.000000000 +0100
+++ arguments.c	2021-04-13 19:25:12.613576000 +0200
@@ -72,7 +72,9 @@
 
 	args = xcalloc(1, sizeof *args);
 
+#ifdef __Linux__
 	optreset = 1;
+#endif
 	optind = 1;
 	optarg = NULL;
 
Index: compat.h
--- compat.h.orig	2021-03-02 13:07:17.000000000 +0100
+++ compat.h	2021-04-13 19:25:12.613700000 +0200
@@ -289,6 +289,22 @@
 int		 getdtablecount(void);
 #endif
 
+#ifndef MAXPATHLEN
+#define MAXPATHLEN 4096
+#endif
+
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
+#ifndef MAXHOSTNAMELEN
+#define MAXHOSTNAMELEN 64
+#endif
+
+#ifndef IOV_MAX
+#define IOV_MAX	1024
+#endif
+
 #ifndef HAVE_CLOSEFROM
 /* closefrom.c */
 void		 closefrom(int);
Index: osdep-freebsd.c
--- osdep-freebsd.c.orig	2021-03-02 13:07:17.000000000 +0100
+++ osdep-freebsd.c	2021-04-13 19:25:12.613816000 +0200
@@ -28,7 +28,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#if 0
 #include <libutil.h>
+#endif
 
 #include "compat.h"
 
@@ -136,6 +138,7 @@
 static char *
 osdep_get_cwd_fallback(int fd)
 {
+#if 0
 	static char		 wd[PATH_MAX];
 	struct kinfo_file	*info = NULL;
 	pid_t			 pgrp;
@@ -156,6 +159,7 @@
 	}
 
 	free(info);
+#endif
 	return (NULL);
 }
 
Index: tmux.1
--- tmux.1.orig	2021-04-13 07:26:00.000000000 +0200
+++ tmux.1	2021-04-13 19:26:33.530864000 +0200
@@ -874,7 +874,7 @@
 .Ql -
 may be followed by an offset, for example:
 .Bd -literal -offset indent
-select-window -t:+2
+select-window \-t:+2
 .Ed
 .Pp
 In addition,
@@ -984,11 +984,11 @@
 .Bd -literal -offset indent
 refresh-client -t/dev/ttyp2
 
-rename-session -tfirst newname
+rename-session \-tfirst newname
 
 set-option -wt:0 monitor-activity on
 
-new-window ; split-window -d
+new-window ; split-window \-d
 
 bind-key R source-file ~/.tmux.conf \e; \e
 	display-message "source-file done"
@@ -997,11 +997,11 @@
 Or from
 .Xr sh 1 :
 .Bd -literal -offset indent
-$ tmux kill-window -t :1
+$ tmux kill-window \-t :1
 
-$ tmux new-window \e; split-window -d
+$ tmux new-window \e; split-window \-d
 
-$ tmux new-session -d 'vi ~/.tmux.conf' \e; split-window -d \e; attach
+$ tmux new-session \-d 'vi ~/.tmux.conf' \e; split-window \-d \e; attach
 .Ed
 .Sh CLIENTS AND SESSIONS
 The
@@ -2029,7 +2029,7 @@
 and the result executed as a command.
 If
 .Ar template
-is not given, "detach-client -t '%%'" is used.
+is not given, "detach-client \-t '%%'" is used.
 .Pp
 .Fl O
 specifies the initial sort field: one of
@@ -2110,7 +2110,7 @@
 and the result executed as a command.
 If
 .Ar template
-is not given, "switch-client -t '%%'" is used.
+is not given, "switch-client \-t '%%'" is used.
 .Pp
 .Fl O
 specifies the initial sort field: one of
@@ -2220,7 +2220,7 @@
 substituted by the pane ID.
 The default
 .Ar template
-is "select-pane -t '%%'".
+is "select-pane \-t '%%'".
 With
 .Fl b ,
 other commands are not blocked from running until the indicator is closed.
@@ -2567,7 +2567,7 @@
 option only opens a new pipe if no previous pipe exists, allowing a pipe to
 be toggled with a single key, for example:
 .Bd -literal -offset indent
-bind-key C-p pipe-pane -o 'cat >>~/output.#I-#P'
+bind-key C-p pipe-pane \-o 'cat >>~/output.#I-#P'
 .Ed
 .It Xo Ic previous-layout
 .Op Fl t Ar target-window
@@ -3288,16 +3288,16 @@
 is appended to the existing setting.
 For example:
 .Bd -literal -offset indent
-set -g status-left "foo"
-set -ag status-left "bar"
+set \-g status-left "foo"
+set \-ag status-left "bar"
 .Ed
 .Pp
 Will result in
 .Ql foobar .
 And:
 .Bd -literal -offset indent
-set -g status-style "bg=red"
-set -ag status-style "fg=blue"
+set \-g status-style "bg=red"
+set \-ag status-style "fg=blue"
 .Ed
 .Pp
 Will result in a red background
@@ -3865,7 +3865,7 @@
 Examples are:
 .Bd -literal -offset indent
 #(sysctl vm.loadavg)
-#[fg=yellow,bold]#(apm -l)%%#[default] [#S]
+#[fg=yellow,bold]#(apm \-l)%%#[default] [#S]
 .Ed
 .Pp
 The default is
@@ -4338,8 +4338,8 @@
 .Fl H .
 The following two commands are equivalent:
 .Bd -literal -offset indent.
-set-hook -g pane-mode-changed[42] 'set -g status-left-style bg=red'
-set-option -g pane-mode-changed[42] 'set -g status-left-style bg=red'
+set-hook \-g pane-mode-changed[42] 'set \-g status-left-style bg=red'
+set-option \-g pane-mode-changed[42] 'set \-g status-left-style bg=red'
 .Ed
 .Pp
 Setting a hook without specifying an array index clears the hook and sets the
@@ -4355,7 +4355,7 @@
 layout after every
 .Ic split-window :
 .Bd -literal -offset indent
-set-hook -g after-split-window "selectl even-vertical"
+set-hook \-g after-split-window "selectl even-vertical"
 .Ed
 .Pp
 All the notifications listed in the
@@ -5745,7 +5745,7 @@
 and the result executed as a command.
 If
 .Ar template
-is not given, "paste-buffer -b '%%'" is used.
+is not given, "paste-buffer \-b '%%'" is used.
 .Pp
 .Fl O
 specifies the initial sort field: one of
@@ -6407,22 +6407,22 @@
 .Pp
 Changing the default prefix key:
 .Bd -literal -offset indent
-set-option -g prefix C-a
+set-option \-g prefix C-a
 unbind-key C-b
 bind-key C-a send-prefix
 .Ed
 .Pp
 Turning the status line off, or changing its colour:
 .Bd -literal -offset indent
-set-option -g status off
-set-option -g status-style bg=blue
+set-option \-g status off
+set-option \-g status-style bg=blue
 .Ed
 .Pp
 Setting other options, such as the default command,
 or locking after 30 minutes of inactivity:
 .Bd -literal -offset indent
-set-option -g default-command "exec /bin/ksh"
-set-option -g lock-after-time 1800
+set-option \-g default-command "exec /bin/ksh"
+set-option \-g lock-after-time 1800
 .Ed
 .Pp
 Creating new key bindings: