diff --git a/legacy/ecore/ChangeLog b/legacy/ecore/ChangeLog
index 6cc4a95d39..6772fd2adb 100644
--- a/legacy/ecore/ChangeLog
+++ b/legacy/ecore/ChangeLog
@@ -1022,3 +1022,7 @@
 2012-11-23  Eduardo Lima (Etrunko)
 
        * Fix leak of strcut wl_registry in Ecore Wayland
+
+2012-11-23  Sebastian Dransfeld
+
+	* Correctly define alloca
diff --git a/legacy/ecore/src/lib/ecore_con/ecore_con_eet.c b/legacy/ecore/src/lib/ecore_con/ecore_con_eet.c
index ece348ef8d..3a958f3663 100644
--- a/legacy/ecore/src/lib/ecore_con/ecore_con_eet.c
+++ b/legacy/ecore/src/lib/ecore_con/ecore_con_eet.c
@@ -2,6 +2,32 @@
 # include <config.h>
 #endif
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 #include <Eina.h>
 
 #include "Ecore_Con_Eet.h"
diff --git a/legacy/ecore/src/lib/ecore_con/ecore_con_info.c b/legacy/ecore/src/lib/ecore_con/ecore_con_info.c
index fdcf0b9a58..a8f47bdbc4 100644
--- a/legacy/ecore/src/lib/ecore_con/ecore_con_info.c
+++ b/legacy/ecore/src/lib/ecore_con/ecore_con_info.c
@@ -9,21 +9,30 @@
 # include <config.h>
 #endif
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
 #ifdef HAVE_ALLOCA_H
 # include <alloca.h>
-#elif defined __GNUC__
-# define alloca __builtin_alloca
-#elif defined _AIX
-# define alloca __alloca
-#elif defined _MSC_VER
-# include <malloc.h>
-# define alloca _alloca
-#else
-# include <stddef.h>
-# ifdef  __cplusplus
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
 extern "C"
+#  endif
+void *alloca (size_t);
 # endif
-void *alloca(size_t);
 #endif
 
 #include <string.h>
diff --git a/legacy/ecore/src/lib/ecore_con/ecore_con_ssl.c b/legacy/ecore/src/lib/ecore_con/ecore_con_ssl.c
index 1027dbb118..20fafccbd4 100644
--- a/legacy/ecore/src/lib/ecore_con/ecore_con_ssl.c
+++ b/legacy/ecore/src/lib/ecore_con/ecore_con_ssl.c
@@ -2,6 +2,32 @@
 # include <config.h>
 #endif
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 #if USE_GNUTLS
 # include <gnutls/gnutls.h>
 # include <gnutls/x509.h>
diff --git a/legacy/ecore/src/lib/ecore_evas/ecore_evas_extn.c b/legacy/ecore/src/lib/ecore_evas/ecore_evas_extn.c
index c192a3a82b..478096b568 100644
--- a/legacy/ecore/src/lib/ecore_evas/ecore_evas_extn.c
+++ b/legacy/ecore/src/lib/ecore_evas/ecore_evas_extn.c
@@ -2,6 +2,32 @@
 # include <config.h>
 #endif
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/types.h>
diff --git a/legacy/ecore/src/lib/ecore_file/ecore_file_path.c b/legacy/ecore/src/lib/ecore_file/ecore_file_path.c
index 3c06e9b16c..c1c54b7c0f 100644
--- a/legacy/ecore/src/lib/ecore_file/ecore_file_path.c
+++ b/legacy/ecore/src/lib/ecore_file/ecore_file_path.c
@@ -2,22 +2,30 @@
 # include <config.h>
 #endif
 
-#undef alloca
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
 #ifdef HAVE_ALLOCA_H
 # include <alloca.h>
-#elif defined __GNUC__
-# define alloca __builtin_alloca
-#elif defined _AIX
-# define alloca __alloca
-#elif defined _MSC_VER
-# include <malloc.h>
-# define alloca _alloca
-#else
-# include <stddef.h>
-# ifdef  __cplusplus
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
 extern "C"
-# endif
+#  endif
 void *alloca (size_t);
+# endif
 #endif
 
 #include <stdlib.h>
diff --git a/legacy/ecore/src/lib/ecore_x/xcb/ecore_xcb_private.h b/legacy/ecore/src/lib/ecore_x/xcb/ecore_xcb_private.h
index 838c278340..dfb5fbc70d 100644
--- a/legacy/ecore/src/lib/ecore_x/xcb/ecore_xcb_private.h
+++ b/legacy/ecore/src/lib/ecore_x/xcb/ecore_xcb_private.h
@@ -7,6 +7,32 @@
 #  include "config.h"
 # endif
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 # include <unistd.h> // included for close & gethostname functions
 
 /* generic xcb includes */
diff --git a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x.c b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x.c
index 7cb777d0cd..2b50ad0024 100644
--- a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x.c
+++ b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x.c
@@ -2,6 +2,32 @@
 # include <config.h>
 #endif /* ifdef HAVE_CONFIG_H */
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
diff --git a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_atoms.c b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_atoms.c
index 6518264e87..2aec7ce740 100644
--- a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_atoms.c
+++ b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_atoms.c
@@ -2,22 +2,31 @@
 # include <config.h>
 #endif /* ifdef HAVE_CONFIG_H */
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
 #ifdef HAVE_ALLOCA_H
 # include <alloca.h>
-#elif defined __GNUC__
-# define alloca __builtin_alloca
-#elif defined _AIX
-# define alloca __alloca
-#elif defined _MSC_VER
-# include <malloc.h>
-# define alloca _alloca
-#else /* ifdef HAVE_ALLOCA_H */
-# include <stddef.h>
-# ifdef  __cplusplus
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
 extern "C"
-# endif /* ifdef  __cplusplus */
-void *alloca(size_t);
-#endif /* ifdef HAVE_ALLOCA_H */
+#  endif
+void *alloca (size_t);
+# endif
+#endif
 
 #include <string.h>
 
diff --git a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_e.c b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_e.c
index ea17e64e01..430b24b117 100644
--- a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_e.c
+++ b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_e.c
@@ -6,6 +6,32 @@
 # include <config.h>
 #endif /* ifdef HAVE_CONFIG_H */
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 #include "Ecore.h"
 #include "ecore_x_private.h"
 #include "Ecore_X.h"
diff --git a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_image.c b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_image.c
index 71a933cc52..8f823a47f2 100644
--- a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_image.c
+++ b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_image.c
@@ -2,6 +2,32 @@
 # include <config.h>
 #endif
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 #include <stdlib.h>
 #include <string.h>
 #include <sys/ipc.h>
diff --git a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_randr_12.c b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_randr_12.c
index 97f1d0cc73..9e937d7bf7 100644
--- a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_randr_12.c
+++ b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_randr_12.c
@@ -6,6 +6,32 @@
 # include <config.h>
 #endif
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 #include "ecore_x_private.h"
 #include "ecore_x_randr.h"
 #include <stdio.h>
diff --git a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_selection.c b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_selection.c
index 476621a289..099f9f49ee 100644
--- a/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_selection.c
+++ b/legacy/ecore/src/lib/ecore_x/xlib/ecore_x_selection.c
@@ -2,6 +2,32 @@
 # include <config.h>
 #endif /* ifdef HAVE_CONFIG_H */
 
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#elif !defined alloca
+# ifdef __GNUC__
+#  define alloca __builtin_alloca
+# elif defined _AIX
+#  define alloca __alloca
+# elif defined _MSC_VER
+#  include <malloc.h>
+#  define alloca _alloca
+# elif !defined HAVE_ALLOCA
+#  ifdef  __cplusplus
+extern "C"
+#  endif
+void *alloca (size_t);
+# endif
+#endif
+
 #include <stdlib.h>
 #include <string.h>