From 717638b3e6a7dacc55dcb51d5d337f88cfe5d316 Mon Sep 17 00:00:00 2001
From: David Manura <dm.git@math2.org>
Date: Thu, 24 Mar 2011 01:56:15 -0400
Subject: loadlib_rel.c - Fix implicit declaration of readlink (on
 clang/linux).

This error was observed in clang/Linux:
  loadlib_rel.c- warning: implicit declaration
  of function 'readlink' is invalid in C99 [-Wimplicit-function-declaration]
  n = readlink("/proc/self/exe", progdir, nsize);
      ^
---
 src/loadlib_rel.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/loadlib_rel.c b/src/loadlib_rel.c
index 8f5820b..cc21a3d 100644
--- a/src/loadlib_rel.c
+++ b/src/loadlib_rel.c
@@ -55,6 +55,9 @@ static void setprogdir (lua_State *L);
 #else
   #define _PATH_MAX PATH_MAX
 #endif
+#if defined(__linux__)
+  #include <unistd.h> /* readlink */
+#endif
 
 static void setprogdir (lua_State *L) {
   char progdir[_PATH_MAX + 1];
-- 
cgit v1.2.1