--- apr-1.7.0/build/apr_common.m4	2020/10/29 20:16:55	1882979
+++ apr-1.7.0/build/apr_common.m4	2020/10/29 20:23:11	1882980
@@ -495,6 +495,7 @@
 #include <errno.h>
 #include <string.h>
 #include <stdio.h>
+#include <stdlib.h>
 main()
 {
   char buf[1024];
--- apr-1.7.0/build/apr_network.m4	2020/10/29 20:16:55	1882979
+++ apr-1.7.0/build/apr_network.m4	2020/10/29 20:23:11	1882980
@@ -63,6 +63,9 @@
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 
 int main(void) {
     struct addrinfo hints, *ai;
@@ -151,6 +154,9 @@
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 
 int main(void) {
     struct sockaddr_in sa;
@@ -194,6 +200,9 @@
 #ifdef HAVE_NETDB_H
 #include <netdb.h>
 #endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 
 int main(void) {
     if (EAI_ADDRFAMILY < 0) {
@@ -403,6 +412,9 @@
 #ifndef HAVE_SOCKLEN_T
 typedef int socklen_t;
 #endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 int main(void) {
     int listen_s, connected_s, client_s;
     int listen_port, rc;
@@ -588,6 +600,9 @@
 #ifdef HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 int main(void) {
     int listen_s, connected_s, client_s;
     int listen_port, rc;
--- apr-1.7.0/configure.in	2020/10/29 20:16:55	1882979
+++ apr-1.7.0/configure.in	2020/10/29 20:23:11	1882980
@@ -2214,6 +2214,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <sys/resource.h>
+#include <stdlib.h>
 main()
 {
     struct rlimit limit;
@@ -2250,6 +2251,7 @@
 #include <stdlib.h>
 #include <fcntl.h>
 #include <semaphore.h>
+#include <stdlib.h>
 #ifndef SEM_FAILED
 #define SEM_FAILED (-1)
 #endif
@@ -2313,6 +2315,7 @@
       AC_TRY_RUN([
 #include <sys/types.h>
 #include <pthread.h>
+#include <stdlib.h>
         int main()
         {
             pthread_mutex_t mutex;
@@ -2442,7 +2445,9 @@
 #endif
 #include <fcntl.h>
 #include <errno.h>
-
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
 int fd;
 struct flock proc_mutex_lock_it = {0};
 const char *fname = "conftest.fcntl";
--- apr-1.7.0/build/apr_network.m4	2020/10/29 20:23:11	1882980
+++ apr-1.7.0/build/apr_network.m4	2020/10/29 20:32:54	1882981
@@ -154,6 +154,9 @@
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #endif