build: Improve D-Bus checks for cross-compilation

diff --git a/configure.ac b/configure.ac
index ac66406..7772e72 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -312,9 +312,15 @@ fi
 
 PKG_CHECK_MODULES(DBUS, dbus-1 >= 1.0, dummy=yes,
                                AC_MSG_ERROR(D-Bus >= 1.0 is required))
+saved_CFLAGS="$CFLAGS"
+saved_LIBS="$LIBS"
+CFLAGS="$CFLAGS $DBUS_CFLAGS"
+LIBS="$LIBS $DBUS_LIBS"
 AC_CHECK_LIB(dbus-1, dbus_watch_get_unix_fd, dummy=yes,
        AC_DEFINE(NEED_DBUS_WATCH_GET_UNIX_FD, 1,
                [Define to 1 if you need the dbus_watch_get_unix_fd() function.]))
+CFLAGS="$saved_CFLAGS"
+LIBS="$saved_LIBS"
 AC_SUBST(DBUS_CFLAGS)
 AC_SUBST(DBUS_LIBS)