From 1b1c13e3debcfdc66d9fd94ea7ba08eb1f788595 Mon Sep 17 00:00:00 2001
From: Alexey Dokuchaev <danfe@FreeBSD.org>
Date: Sun, 13 Nov 2022 15:46:42 +0100
Subject: [PATCH] Add missing `get_exe_filename()` implementation for FreeBSD

---
 src/main.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main.c b/src/main.c
index 9784c0ac..e9a612f8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -7,11 +7,14 @@
 
 #ifdef _WIN32
   #include <windows.h>
-#elif __linux__ || __FreeBSD__
+#elif __linux__
   #include <unistd.h>
   #include <signal.h>
 #elif __APPLE__
   #include <mach-o/dyld.h>
+#elif __FreeBSD__
+  #include <sys/sysctl.h>
+  #include <signal.h>
 #endif
 
 
@@ -43,6 +46,10 @@ static void get_exe_filename(char *buf, int sz) {
   char exepath[size];
   _NSGetExecutablePath(exepath, &size);
   realpath(exepath, buf);
+#elif __FreeBSD__
+  size_t len = sz;
+  const int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
+  sysctl(mib, 4, buf, &len, NULL, 0);
 #else
   strcpy(buf, "./lite");
 #endif