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-rw-r--r--ares/m4/cares-functions.m458
1 files changed, 57 insertions, 1 deletions
diff --git a/ares/m4/cares-functions.m4 b/ares/m4/cares-functions.m4
index 245e93bd0..bfc2c0b5f 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 24
+# serial 25
dnl CARES_INCLUDES_ARPA_INET
@@ -1291,6 +1291,7 @@ AC_DEFUN([CARES_CHECK_FUNC_IOCTL], [
[Define to 1 if you have the ioctl function.])
ac_cv_func_ioctl="yes"
CARES_CHECK_FUNC_IOCTL_FIONBIO
+ CARES_CHECK_FUNC_IOCTL_SIOCGIFADDR
else
AC_MSG_RESULT([no])
ac_cv_func_ioctl="no"
@@ -1354,6 +1355,61 @@ AC_DEFUN([CARES_CHECK_FUNC_IOCTL_FIONBIO], [
])
+dnl CARES_CHECK_FUNC_IOCTL_SIOCGIFADDR
+dnl -------------------------------------------------
+dnl Verify if ioctl with the SIOCGIFADDR command is
+dnl available, can be compiled, and seems to work. If
+dnl all of these are true, then HAVE_IOCTL_SIOCGIFADDR
+dnl will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_IOCTL_SIOCGIFADDR], [
+ #
+ tst_compi_ioctl_siocgifaddr="unknown"
+ tst_allow_ioctl_siocgifaddr="unknown"
+ #
+ if test "$ac_cv_func_ioctl" = "yes"; then
+ AC_MSG_CHECKING([if ioctl SIOCGIFADDR is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_stropts
+ ]],[[
+ if(0 != ioctl(0, SIOCGIFADDR, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_ioctl_siocgifaddr="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_ioctl_siocgifaddr="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_ioctl_siocgifaddr" = "yes"; then
+ AC_MSG_CHECKING([if ioctl SIOCGIFADDR usage allowed])
+ if test "x$cares_disallow_ioctl_siocgifaddr" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_ioctl_siocgifaddr="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_ioctl_siocgifaddr="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if ioctl SIOCGIFADDR might be used])
+ if test "$tst_compi_ioctl_siocgifaddr" = "yes" &&
+ test "$tst_allow_ioctl_siocgifaddr" = "yes"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_IOCTL_SIOCGIFADDR, 1,
+ [Define to 1 if you have a working ioctl SIOCGIFADDR function.])
+ ac_cv_func_ioctl_siocgifaddr="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_ioctl_siocgifaddr="no"
+ fi
+])
+
+
dnl CARES_CHECK_FUNC_IOCTLSOCKET
dnl -------------------------------------------------
dnl Verify if ioctlsocket is available, prototyped, and