From 3e364c72f79e3cec69fc4c3263cd0bccbc467bf5 Mon Sep 17 00:00:00 2001
From: Petr Spacek <pspacek@redhat.com>
Date: Nov 26 2014 16:37:53 +0000
Subject: Improve detection of BIND 9 isc__errno2result header file.


This header file is not in standard distribution so normal isc-config.sh
detection is not enough.

---

diff --git a/configure.ac b/configure.ac
index c985908..d12ef7b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -65,6 +65,8 @@ fi
 CFLAGS="$BIND9_CFLAGS $CFLAGS"
 
 # Checks for libraries.
+AC_CHECK_LIB([isc], [isc_dir_open], [],
+	AC_MSG_ERROR([Install BIND9 ISC development files]))
 AC_CHECK_LIB([dns], [dns_name_init], [],
 	AC_MSG_ERROR([Install BIND9 development files]))
 AC_CHECK_LIB([ldap], [ldap_initialize], [],
@@ -87,6 +89,21 @@ int main(void) {
 [AC_MSG_ERROR([Cross compiling is not supported.])]
 )
 
+dnl isc__errno2result() is typically not present in standard header files
+AC_MSG_CHECKING([isc__errno2result availability in header files])
+AC_TRY_RUN([
+#include <isc/errno2result.h>
+int main(void) {
+	isc__errno2result(0);
+	return 0;
+}],
+[AC_MSG_RESULT([yes])],
+[AC_MSG_ERROR([
+ Can't find isc__errno2result() or header isc/errno2result.h:
+ Please install bind-lite-devel package or similar.])],
+[AC_MSG_ERROR([Cross compiling is not supported.])]
+)
+
 dnl Older autoconf (2.59, for example) doesn't define docdir
 [[ ! -n "$docdir" ]] && docdir='${datadir}/doc/${PACKAGE_TARNAME}'
 AC_SUBST([docdir])