Make miniobj work downstream

Conflicts:
	configure.ac
	varnish.m4

configure.ac

@@ -244,6 +244,7 @@ AC_CHECK_MEMBERS([struct sockaddr.sa_len],,,[
 ])
 
 # Checks for library functions.
+_VARNISH_CHECK_EXPLICIT_BZERO
 AC_TYPE_SIGNAL
 AC_TYPE_SIZE_T
 AC_FUNC_VPRINTF

include/miniobj.h

@@ -5,7 +5,7 @@
  *
  */
 
-#if HAVE_EXPLICIT_BZERO
+#ifdef HAVE_EXPLICIT_BZERO
 #  define ZERO_OBJ(to, sz)	explicit_bzero(to, sz)
 #else
 #  define ZERO_OBJ(to, sz)	(void)memset(to, 0, sz)

varnish.m4

@@ -31,6 +31,12 @@
 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 # OF THE POSSIBILITY OF SUCH DAMAGE.
 
+# _VARNISH_CHECK_EXPLICIT_BZERO()
+# -------------------------------
+AC_DEFUN([_VARNISH_CHECK_EXPLICIT_BZERO], [
+	AC_CHECK_FUNCS([explicit_bzero])
+])
+
 # _VARNISH_PKG_CONFIG
 # --------------------
 AC_DEFUN([_VARNISH_PKG_CONFIG], [
@@ -53,6 +59,7 @@ AC_DEFUN([_VARNISH_PKG_CONFIG], [
 AC_DEFUN([_VARNISH_CHECK_DEVEL], [
 
 	AC_REQUIRE([_VARNISH_PKG_CONFIG])
+	AC_REQUIRE([_VARNISH_CHECK_EXPLICIT_BZERO])
 
 	[_orig_cppflags=$CPPFLAGS]
 	[CPPFLAGS=$VARNISHAPI_CFLAGS]
@@ -254,6 +261,7 @@ AC_DEFUN([VARNISH_VMODS], [
 #
 AC_DEFUN([VARNISH_PREREQ], [
 	AC_REQUIRE([_VARNISH_PKG_CONFIG])
+	AC_REQUIRE([_VARNISH_CHECK_EXPLICIT_BZERO])
 	AC_MSG_CHECKING([for Varnish])
 	AC_MSG_RESULT([$VARNISH_VERSION])