Index: libmpeg2-0.5.1/configure
===================================================================
--- libmpeg2-0.5.1.orig/configure
+++ libmpeg2-0.5.1/configure
@@ -27071,7 +27071,7 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
+#include <stdint.h>
 int
 main ()
 {
@@ -27081,10 +27081,10 @@ static struct s {
                 } S = {0, 0};
                 switch (1) {
                     case 0:
-                    case (long)(&((struct s *)0)->b) == $ac_cv_c_attr_align_try:
+                    case (uintptr_t)(&((struct s *)0)->b) == $ac_cv_c_attr_align_try:
                         return 0;
                 }
-                return (long)&S;
+                return (uintptr_t)&S;
   ;
   return 0;
 }
Index: libmpeg2-0.5.1/m4/keywords.m4
===================================================================
--- libmpeg2-0.5.1.orig/m4/keywords.m4
+++ libmpeg2-0.5.1/m4/keywords.m4
@@ -72,17 +72,17 @@ AC_DEFUN([AC_C_ATTRIBUTE_ALIGNED],
         [ac_cv_c_attribute_aligned],
         [ac_cv_c_attribute_aligned=0
         for ac_cv_c_attr_align_try in 2 4 8 16 32 64; do
-            AC_TRY_COMPILE([],
+            AC_TRY_COMPILE([#include <stdint.h>],
                 [static struct s {
                     char a;
                     char b __attribute__ ((aligned($ac_cv_c_attr_align_try)));
                 } S = {0, 0};
                 switch (1) {
                     case 0:
-                    case (long)(&((struct s *)0)->b) == $ac_cv_c_attr_align_try:
+                    case (uintptr_t)(&((struct s *)0)->b) == $ac_cv_c_attr_align_try:
                         return 0;
                 }
-                return (long)&S;],
+                return (uintptr_t)&S;],
                 [ac_cv_c_attribute_aligned=$ac_cv_c_attr_align_try])
         done])
     if test x"$ac_cv_c_attribute_aligned" != x"0"; then