--- misc/build/apr-1.5.2/configure	2015-04-25 08:04:18.000000000 -0400
+++ misc/build/apr-1.5.2/configure	2021-07-02 15:40:06.000000000 -0400
@@ -22256,6 +22256,7 @@
 #include <errno.h>
 #include <string.h>
 #include <stdio.h>
+#include <stdlib.h>
 main()
 {
   char buf[1024];
@@ -23550,6 +23551,7 @@
 /* end confdefs.h.  */
 #include <stdio.h>
 #include <sys/types.h>
+#include <stdlib.h>
 #ifdef WIN32
 #define binmode "b"
 #else
@@ -23785,6 +23787,7 @@
 /* end confdefs.h.  */
 #include <stdio.h>
 #include <sys/types.h>
+#include <stdlib.h>
 #ifdef WIN32
 #define binmode "b"
 #else
@@ -23848,6 +23851,7 @@
 /* end confdefs.h.  */
 #include <stdio.h>
 #include <stddef.h>
+#include <stdlib.h>
 #ifdef WIN32
 #define binmode "b"
 #else
@@ -23911,6 +23915,7 @@
 /* end confdefs.h.  */
 #include <stdio.h>
 #include <sys/types.h>
+#include <stdlib.h>
 #ifdef WIN32
 #define binmode "b"
 #else
@@ -24061,6 +24066,7 @@
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <stdio.h>
+#include <stdlib.h>
 $ac_includes_default
 #ifdef WIN32
 #define binmode "b"
@@ -24349,6 +24355,7 @@
 #include <stdio.h>
 #include <sys/types.h>
 #include <sys/uio.h>
+#include <stdlib.h>
 #ifdef WIN32
 #define binmode "b"
 #else
@@ -24973,6 +24980,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <sys/resource.h>
+#include <stdlib.h>
 main()
 {
     struct rlimit limit;
@@ -25417,6 +25425,7 @@
 
 #include <sys/types.h>
 #include <pthread.h>
+#include <stdlib.h>
         int main()
         {
             pthread_mutex_t mutex;
@@ -27143,6 +27152,7 @@
 /* end confdefs.h.  */
 
 #include <stdio.h>
+#include <stdlib.h>
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
@@ -27992,6 +28002,7 @@
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
+#include <stdlib.h>
 
 int main(void) {
     struct addrinfo hints, *ai;
@@ -28055,6 +28066,7 @@
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif
+#include <stdlib.h>
 
 int main(void) {
     if (EAI_ADDRFAMILY < 0) {
@@ -28116,6 +28128,7 @@
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
+#include <stdlib.h>
 
 int main(void) {
     struct sockaddr_in sa;