From 33adf9e35813dc28c969b5f482f8bce86bcddf42 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Peter=20Draho=C5=A1?= <drahosp@gmail.com>
Date: Fri, 25 Mar 2011 03:45:13 +0100
Subject: OSX can now detect executable path faster. Fallback is now only for
 unsupported systems.

---
 src/loadlib_rel.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/loadlib_rel.c b/src/loadlib_rel.c
index cc21a3d..5ba8d23 100644
--- a/src/loadlib_rel.c
+++ b/src/loadlib_rel.c
@@ -55,10 +55,16 @@ static void setprogdir (lua_State *L);
 #else
   #define _PATH_MAX PATH_MAX
 #endif
+
 #if defined(__linux__)
   #include <unistd.h> /* readlink */
 #endif
 
+#if defined(__APPLE__)
+  #include <sys/param.h>
+  #include <mach-o/dyld.h>
+#endif
+
 static void setprogdir (lua_State *L) {
   char progdir[_PATH_MAX + 1];
   char *lb;
@@ -77,6 +83,10 @@ static void setprogdir (lua_State *L) {
 #elif defined(__FreeBSD__)
   n = readlink("/proc/curproc/file", progdir, nsize);
   if (n > 0) progdir[n] = 0;
+#elif defined(__APPLE__)
+  uint32_t nsize_apple = nsize;
+  if (_NSGetExecutablePath(progdir, &nsize_apple) == 0)
+    n = strlen(progdir);
 #else
   // FALLBACK
   // Use 'lsof' ... should work on most UNIX systems (incl. OSX)
-- 
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