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-rw-r--r--ares/m4/cares-functions.m410
1 files changed, 6 insertions, 4 deletions
diff --git a/ares/m4/cares-functions.m4 b/ares/m4/cares-functions.m4
index 5cfc35ab3..b625e0378 100644
--- a/ares/m4/cares-functions.m4
+++ b/ares/m4/cares-functions.m4
@@ -1545,9 +1545,9 @@ 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 Verify if ioctl with the SIOCGIFADDR command is available,
+dnl struct ifreq is defined, they can be compiled, and seem to
+dnl work. If all of these are true, then HAVE_IOCTL_SIOCGIFADDR
dnl will be defined.
AC_DEFUN([CARES_CHECK_FUNC_IOCTL_SIOCGIFADDR], [
@@ -1560,8 +1560,10 @@ AC_DEFUN([CARES_CHECK_FUNC_IOCTL_SIOCGIFADDR], [
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM([[
$cares_includes_stropts
+ #include <net/if.h>
]],[[
- if(0 != ioctl(0, SIOCGIFADDR, 0))
+ struct ifreq ifr;
+ if(0 != ioctl(0, SIOCGIFADDR, &ifr))
return 1;
]])
],[