use HAVE_LIMITS_H symbol to protect limits.h inclusion

ares/ares_parse_a_reply.c

@@ -44,7 +44,10 @@
 
 #include <stdlib.h>
 #include <string.h>
+#ifdef HAVE_LIMITS_H
 #  include <limits.h>
+#endif
+
 #include "ares.h"
 #include "ares_dns.h"
 #include "ares_private.h"

ares/ares_parse_aaaa_reply.c

@@ -44,7 +44,10 @@
 
 #include <stdlib.h>
 #include <string.h>
+#ifdef HAVE_LIMITS_H
 #  include <limits.h>
+#endif
+
 #include "ares.h"
 #include "ares_dns.h"
 #include "inet_net_pton.h"

ares/ares_writev.c

@@ -18,7 +18,10 @@
 
 #include "setup.h"
 
+#ifdef HAVE_LIMITS_H
 #  include <limits.h>
+#endif
+
 #include "ares.h"
 #include "ares_private.h"
 

ares/config-win32.h

@@ -29,6 +29,9 @@
 #define HAVE_GETOPT_H 1
 #endif
 
+/* Define if you have the <limits.h> header file.  */
+#define HAVE_LIMITS_H 1
+
 /* Define if you have the <signal.h> header file. */
 #define HAVE_SIGNAL_H 1
 

ares/configure.ac

@@ -448,6 +448,7 @@ AC_CHECK_HEADERS(
        strings.h \
        stdbool.h \
        time.h \
+       limits.h \
        arpa/nameser.h \
        arpa/nameser_compat.h \
        arpa/inet.h,

lib/config-win32.h

@@ -30,6 +30,9 @@
 /* Define if you have the <io.h> header file.  */
 #define HAVE_IO_H 1
 
+/* Define if you have the <limits.h> header file.  */
+#define HAVE_LIMITS_H 1
+
 /* Define if you need the malloc.h header file even with stdlib.h  */
 #ifndef __SALFORDC__
 #define NEED_MALLOC_H 1

lib/config-win32ce.h

@@ -30,6 +30,9 @@
 /* Define if you have the <io.h> header file.  */
 #define HAVE_IO_H 1
 
+/* Define if you have the <limits.h> header file.  */
+#define HAVE_LIMITS_H 1
+
 /* Define if you need the malloc.h header header file even with stdlib.h  */
 #define NEED_MALLOC_H 1
 

lib/hostares.c

@@ -24,8 +24,10 @@
 #include "setup.h"
 
 #include <string.h>
-#include <limits.h>
 
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
 #ifdef NEED_MALLOC_H
 #include <malloc.h>
 #endif

lib/qssl.c

@@ -27,7 +27,9 @@
 #include <qsossl.h>
 #include <errno.h>
 #include <string.h>
+#ifdef HAVE_LIMITS_H
 #  include <limits.h>
+#endif
 
 #include <curl/curl.h>
 #include "urldata.h"

lib/ssh.c

@@ -31,7 +31,9 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include <ctype.h>
+#ifdef HAVE_LIMITS_H
 #  include <limits.h>
+#endif
 
 #include <libssh2.h>
 #include <libssh2_sftp.h>

lib/ssluse.c

@@ -36,7 +36,9 @@
 #include <string.h>
 #include <stdlib.h>
 #include <ctype.h>
+#ifdef HAVE_LIMITS_H
 #include <limits.h>
+#endif
 #ifdef HAVE_SYS_SOCKET_H
 #include <sys/socket.h>
 #endif