[CMake] Cleanup check-lldb targets

Summary:
This patch adds the following fixes to the check-lldb targets:

* Adds missing dependencies on lldb tools so they get built before tests execute
* Adds Ninja USES_TERMINAL to the target so that the output streams to stdout as it executes
* Uses a generator expression to find the lldb executable, this is more robust than constructing the path manually

Reviewers: tfiala, zturner

Subscribers: mgorny, lldb-commits

Differential Revision: https://reviews.llvm.org/D25490

llvm-svn: 284046

lldb/test/CMakeLists.txt

@@ -8,9 +8,25 @@ function(add_python_test_target name test_script args comment)
   add_custom_target(${name}
     COMMAND ${PYTHON_TEST_COMMAND} ${ARG_DEFAULT_ARGS}
     COMMENT "${comment}"
+    DEPENDS ${LLDB_TEST_DEPS}
+    USES_TERMINAL
     )
 endfunction()
 
+set(LLDB_TEST_DEPS lldb)
+
+if(TARGET lldb-server)
+  list(APPEND LLDB_TEST_DEPS lldb-server)
+endif()
+
+if(TARGET debugserver)
+  list(APPEND LLDB_TEST_DEPS debugserver)
+endif()
+
+if(TARGET lldb-mi)
+  list(APPEND LLDB_TEST_DEPS lldb-mi)
+endif()
+
 if ("${LLDB_TEST_COMPILER}" STREQUAL "")
     string(REGEX REPLACE ".*ccache\ +" "" LLDB_TEST_COMPILER ${CMAKE_C_COMPILER} ${CMAKE_C_COMPILER_ARG1})
 endif()
@@ -34,8 +50,7 @@ set(LLDB_TEST_USER_ARGS
 
 set(LLDB_TEST_COMMON_ARGS
   --arch=${LLDB_TEST_ARCH}
-  --executable
-  ${CMAKE_BINARY_DIR}/bin/lldb${CMAKE_EXECUTABLE_SUFFIX}
+  --executable $<TARGET_FILE:lldb>
   -s
   ${CMAKE_BINARY_DIR}/lldb-test-traces
   -S nm