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-rw-r--r--ares/m4/cares-functions.m427
1 files changed, 26 insertions, 1 deletions
diff --git a/ares/m4/cares-functions.m4 b/ares/m4/cares-functions.m4
index 520e99a29..0aa51f60f 100644
--- a/ares/m4/cares-functions.m4
+++ b/ares/m4/cares-functions.m4
@@ -16,7 +16,7 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
-# serial 8
+# serial 10
dnl CARES_INCLUDES_ARPA_INET
@@ -67,6 +67,27 @@ cares_includes_netdb="\
])
+dnl CARES_INCLUDES_STDLIB
+dnl -------------------------------------------------
+dnl Set up variable with list of headers that must be
+dnl included when stdlib.h is to be included.
+
+AC_DEFUN([CARES_INCLUDES_STDLIB], [
+cares_includes_stdlib="\
+/* includes start */
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+/* includes end */"
+ AC_CHECK_HEADERS(
+ sys/types.h stdlib.h,
+ [], [], [$cares_includes_stdlib])
+])
+
+
dnl CARES_INCLUDES_STRING
dnl -------------------------------------------------
dnl Set up variable with list of headers that must be
@@ -404,6 +425,7 @@ dnl with shell variable cares_disallow_inet_ntop, then
dnl HAVE_INET_NTOP will be defined.
AC_DEFUN([CARES_CHECK_FUNC_INET_NTOP], [
+ AC_REQUIRE([CARES_INCLUDES_STDLIB])dnl
AC_REQUIRE([CARES_INCLUDES_ARPA_INET])dnl
AC_REQUIRE([CARES_INCLUDES_STRING])dnl
#
@@ -461,6 +483,7 @@ AC_DEFUN([CARES_CHECK_FUNC_INET_NTOP], [
AC_MSG_CHECKING([if inet_ntop seems to work])
AC_RUN_IFELSE([
AC_LANG_PROGRAM([[
+ $cares_includes_stdlib
$cares_includes_arpa_inet
$cares_includes_string
]],[[
@@ -561,6 +584,7 @@ dnl with shell variable cares_disallow_inet_pton, then
dnl HAVE_INET_PTON will be defined.
AC_DEFUN([CARES_CHECK_FUNC_INET_PTON], [
+ AC_REQUIRE([CARES_INCLUDES_STDLIB])dnl
AC_REQUIRE([CARES_INCLUDES_ARPA_INET])dnl
AC_REQUIRE([CARES_INCLUDES_STRING])dnl
#
@@ -618,6 +642,7 @@ AC_DEFUN([CARES_CHECK_FUNC_INET_PTON], [
AC_MSG_CHECKING([if inet_pton seems to work])
AC_RUN_IFELSE([
AC_LANG_PROGRAM([[
+ $cares_includes_stdlib
$cares_includes_arpa_inet
$cares_includes_string
]],[[