Compilation problem on osx

[mico]

Getting error:
[ 89%] Built target jsmin
Scanning dependencies of target xeth_autogen
make[2]: *** No rule to make target html.cxx', needed by CMakeFiles/xeth_autogen'. Stop.
make[1]: *** [CMakeFiles/xeth_autogen.dir/all] Error 2
make: *** [all] Error 2

$ git diff
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 03e2ef7..316cab1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,9 @@
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
project(xeth)
cmake_minimum_required(VERSION 2.8)