xo-jit: incorporate kaleidoscope jit for codegen

example/ex_kaleidoscope4/CMakeLists.txt

@@ -0,0 +1,12 @@
+# xo-jit/example/ex1/CMakeLists.txt
+
+set(SELF_EXE xo_kaleidoscope4)
+set(SELF_SRCS ex_kaleidoscope4.cpp)
+
+if (XO_ENABLE_EXAMPLES)
+    xo_add_executable(${SELF_EXE} ${SELF_SRCS})
+    xo_self_dependency(${SELF_EXE} xo_jit)
+    #xo_dependency(${SELF_EXE} xo_expression)
+endif()
+
+# end CMakeLists.txt

example/ex_kaleidoscope4/ex_kaleidoscope4.cpp

@@ -0,0 +1,16 @@
+/** ex_kaleidoscop4.cpp **/
+
+#include "xo/jit/KaleidoscopeJit.hpp"
+#include <iostream>
+
+int
+main() {
+    using std::cerr;
+    using std::endl;
+
+    auto jit = xo::jit::KaleidoscopeJIT::Create();
+
+    cerr << "created kaleidoscope jit successfully" << endl;
+}
+
+/** end ex_kaleidoscope4.cpp **/