unbound/dnstap/dnstap.m4

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# dnstap.m4
# dt_DNSTAP(default_dnstap_socket_path, [action-if-true], [action-if-false])
# --------------------------------------------------------------------------
# Check for required dnstap libraries and add dnstap configure args.
AC_DEFUN([dt_DNSTAP],
[
AC_ARG_ENABLE([dnstap],
AS_HELP_STRING([--enable-dnstap],
[Enable dnstap support (requires fstrm, protobuf-c)]),
[opt_dnstap=$enableval], [opt_dnstap=no])
AC_ARG_WITH([dnstap-socket-path],
AS_HELP_STRING([--with-dnstap-socket-path=pathname],
[set default dnstap socket path]),
[opt_dnstap_socket_path=$withval], [opt_dnstap_socket_path="$1"])
if test "x$opt_dnstap" != "xno"; then
AC_PATH_PROG([PROTOC_C], [protoc-c])
if test -z "$PROTOC_C"; then
AC_MSG_ERROR([The protoc-c program was not found. Please install protobuf-c!])
fi
PKG_CHECK_MODULES([libfstrm], [libfstrm])
PKG_CHECK_MODULES([libprotobuf_c], [libprotobuf-c])
DNSTAP_CFLAGS="$libfstrm_CFLAGS $libprotobuf_c_CFLAGS"
DNSTAP_LIBS="$libfstrm_LIBS $libprotobuf_c_LIBS"
$2
else
$3
fi
])