BUILD: Add checks for intptr_t / uintptr_t

config.h.in

@@ -63,6 +63,9 @@
 /* Define if you have the iconv() function and it works. */
 #undef HAVE_ICONV
 
+/* Define to 1 if the system has the type `intptr_t'. */
+#undef HAVE_INTPTR_T
+
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
@@ -96,6 +99,9 @@
 /* Define to 1 if you have the <sys/types.h> header file. */
 #undef HAVE_SYS_TYPES_H
 
+/* Define to 1 if the system has the type `uintptr_t'. */
+#undef HAVE_UINTPTR_T
+
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
@@ -154,3 +160,11 @@
 
 /* Define to empty if `const' does not conform to ANSI C. */
 #undef const
+
+/* Define to the type of a signed integer type wide enough to hold a pointer,
+   if such a type exists, and if the system does not define it. */
+#undef intptr_t
+
+/* Define to the type of an unsigned integer type wide enough to hold a
+   pointer, if such a type exists, and if the system does not define it. */
+#undef uintptr_t

configure.ac

@@ -22,6 +22,14 @@ if test "x$with_werror" = "xyes"; then
 	WERROR="-Werror"
 fi
 
+AC_C_CONST
+AC_HEADER_STDC
+
+AC_C_BIGENDIAN()
+
+AC_TYPE_INTPTR_T
+AC_TYPE_UINTPTR_T
+
 AC_CHECK_LIB([m], [cos])
 AC_CHECK_FUNCS([fabs])
 AC_CHECK_FUNCS([fmin])
@@ -68,11 +76,6 @@ if test -n "$nozlib"; then
 	AC_MSG_ERROR([zlib is required and could not be found])
 fi
 
-AC_C_CONST
-AC_HEADER_STDC
-
-AC_C_BIGENDIAN()
-
 AM_ICONV
 
 if test "x$am_cv_func_iconv" != "xyes"; then