Index: lit/Suite/lit.cfg
===================================================================
--- /dev/null
+++ lit/Suite/lit.cfg
@@ -0,0 +1,25 @@
+# -*- Python -*-
+
+# Configuration file for the 'lit' test runner.
+
+import os
+
+import lit.formats
+
+# name: The name of this test suite.
+config.name = 'lldb-Suite'
+
+# suffixes: A list of file extensions to treat as test files.
+config.suffixes = ['.py']
+
+# test_source_root: The root path where tests are located.
+# test_exec_root: The root path where tests should be run.
+config.test_source_root = os.path.join(config.lldb_src_root, 'test', 'testcases')
+config.test_exec_root = config.test_source_root
+
+# Build dotest command.
+dotest_cmd = [config.dotest_path, '-q']
+dotest_cmd.extend(config.dotest_args_str.split(';'))
+
+# testFormat: The test format to use to interpret tests.
+config.test_format = lit.formats.LLDBTest(dotest_cmd)
Index: lit/Suite/lit.site.cfg.in
===================================================================
--- /dev/null
+++ lit/Suite/lit.site.cfg.in
@@ -0,0 +1,28 @@
+@LIT_SITE_CFG_IN_HEADER@
+
+config.test_exec_root = "@LLVM_BINARY_DIR@"
+config.llvm_src_root = "@LLVM_SOURCE_DIR@"
+config.llvm_obj_root = "@LLVM_BINARY_DIR@"
+config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
+config.llvm_libs_dir = "@LLVM_LIBS_DIR@"
+config.llvm_build_mode = "@LLVM_BUILD_MODE@"
+config.lit_tools_dir = "@LLVM_LIT_TOOLS_DIR@"
+config.lldb_obj_root = "@LLDB_BINARY_DIR@"
+config.lldb_src_root = "@LLDB_SOURCE_DIR@"
+config.target_triple = "@TARGET_TRIPLE@"
+config.python_executable = "@PYTHON_EXECUTABLE@"
+config.dotest_path = "@LLDB_SOURCE_DIR@/test/dotest.py"
+config.dotest_args_str = "@LLDB_DOTEST_ARGS@"
+
+# Support substitution of the tools and libs dirs with user parameters. This is
+# used when we can't determine the tool dir at configuration time.
+try:
+    config.llvm_tools_dir = config.llvm_tools_dir % lit_config.params
+    config.llvm_libs_dir = config.llvm_libs_dir % lit_config.params
+    config.llvm_build_mode = config.llvm_build_mode % lit_config.params
+except KeyError as e:
+    key, = e.args
+    lit_config.fatal("unable to find %r parameter, use '--param=%s=VALUE'" % (key,key))
+
+# Let the main config do the real work.
+lit_config.load_config(config, "@LLDB_SOURCE_DIR@/lit/Suite/lit.cfg")
Index: test/CMakeLists.txt
===================================================================
--- test/CMakeLists.txt
+++ test/CMakeLists.txt
@@ -152,6 +152,17 @@
 add_custom_target(lldb-dotest)
 add_dependencies(lldb-dotest ${LLDB_TEST_DEPS})
 
+configure_file(
+  ${CMAKE_CURRENT_SOURCE_DIR}/../lit/Suite/lit.site.cfg.in
+  ${CMAKE_CURRENT_BINARY_DIR}/../lit/Suite/lit.site.cfg
+  )
+file(GENERATE
+  OUTPUT
+  ${CMAKE_CURRENT_BINARY_DIR}/../lit/Suite/lit.site.cfg
+  INPUT
+  ${CMAKE_CURRENT_BINARY_DIR}/../lit/Suite/lit.site.cfg
+  )
+
 # If we're building with an in-tree clang, then list clang as a dependency
 # to run tests.
 if (TARGET clang)