diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4e85a2781..53d89d321 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,6 +22,7 @@ ENDIF(HAVE_STDBOOL_H)
 IF(HAVE_UNISTD_H)
 CHECK_SYMBOL_EXISTS (sleep "unistd.h" HAVE_SLEEP)
 CHECK_SYMBOL_EXISTS (usleep "unistd.h" HAVE_USLEEP)
+CHECK_SYMBOL_EXISTS (access "unistd.h" HAVE_ACCESS)
 ENDIF(HAVE_UNISTD_H)
 CHECK_SYMBOL_EXISTS (strcasecmp "string.h" HAVE_STRCASECMP)
 CHECK_SYMBOL_EXISTS (strncasecmp "string.h" HAVE_STRNCASECMP)
diff --git a/autoconf.h.in b/autoconf.h.in
index 477f8b4d8..4b399bf70 100644
--- a/autoconf.h.in
+++ b/autoconf.h.in
@@ -12,6 +12,8 @@
 #cmakedefine HAVE__STRICMP 1
 #cmakedefine HAVE_SNPRINTF 1
 #cmakedefine HAVE__SNPRINTF 1
+#cmakedefine HAVE_ACCESS 1
+#cmakedefine HAVE__ACCESS 1
 #cmakedefine HAVE_SLEEP 1
 #cmakedefine HAVE_USLEEP 1
 #cmakedefine HAVE__SLEEP 1
@@ -34,6 +36,24 @@
 #include <strings.h>
 #endif
 
+#ifndef HAVE__ACCESS
+#ifdef HAVE_ACCESS
+#define _access(path, mode) access(path, mode)
+#ifndef _A_RDONLY
+#define _A_RDONLY R_OK
+#endif
+#ifndef _A_WRONLY
+#define _A_WRONLY W_OK
+#endif
+#endif
+#endif
+
+#ifndef _A_RDONLY
+#ifdef R_OK
+#define _A_RDONLY R_OK
+#endif
+#endif
+
 #if !defined(HAVE__MEMICMP)
 #if defined(HAVE_MEMICMP)
 #define _memicmp(a, b, n) memicmp(a, b, n)