CFLAGS for BIND8 support

Some systems (like macOS) require BIND_8_COMPAT to be defined so that
the nameser libraries are, well, BIND8 compatible.

Change-Id: If79fc27a64f90de1835b5aa3aadfa9be22bd16b0

1 files changed, 28 insertions, 0 deletions

diff --git a/configure b/configure
index 739cf65e4..91117632a 100755
--- a/configure
+++ b/configure
@@ -697,6 +697,7 @@ PBX_IP_MTU_DISCOVER
 PBX_RTLD_NOLOAD
 PBX_GLOB_BRACE
 PBX_GLOB_NOMAGIC
+BIND8_CFLAGS
 AST_RPATH
 AST_NATIVE_ARCH
 AST_SHADOW_WARNINGS
@@ -19410,6 +19411,33 @@ fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BIND_8_COMPAT required" >&5
+$as_echo_n "checking for BIND_8_COMPAT required... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+#undef BIND_8_COMPAT
+#include <arpa/nameser.h>
+
+int
+main ()
+{
+int x = NXDOMAIN
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+BIND8_CFLAGS=-DBIND_8_COMPAT
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+
+
 
     if test "x${PBX_GLOB_NOMAGIC}" != "x1"; then
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for GLOB_NOMAGIC in glob.h" >&5