[CMake] Distribution builds for LLDB standalone

[sgraenitz]

Summary

Enable distribution and install-distribution targets in LLDB standalone and pre-populate the cache accordingly on macOS.
Documentation for distribution builds is here: https://llvm.org/docs/BuildingADistribution.html

[sgraenitz]

Add include(LLVMDistributionSupport) which went into the wrong patch

[JDevlieghere]

LGTM

lldb/trunk/CMakeLists.txt

if (WIN32 AND NOT "${PYTHON_DLL}" STREQUAL "")
         file(TO_NATIVE_PATH "${PYTHON_DLL}" PYTHON_DLL_NATIVE_PATH)
         add_custom_command(
             TARGET finish_swig
             POST_BUILD
             COMMAND ${CMAKE_COMMAND} -E copy ${PYTHON_DLL_NATIVE_PATH} ${LLDB_BIN_DIR} VERBATIM
             COMMENT "Copying Python DLL to LLDB binaries directory.")
     endif ()
 endif ()
+
+if(LLDB_BUILT_STANDALONE)
+  llvm_distribution_add_targets()
+endif()

lldb/trunk/cmake/caches/Apple-lldb-macOS.cmake

 
 # Choose the install location for LLDB.framework so that it matches the
 # INSTALL_RPATH of the lldb driver. It's either absolute or relative to
 # CMAKE_INSTALL_PREFIX. In any case, DESTDIR will be an extra prefix.
 set(LLDB_FRAMEWORK_INSTALL_DIR /Applications/Xcode.app/Contents/SharedFrameworks CACHE STRING "")
 
 # Release builds may change these:
 set(CMAKE_OSX_DEPLOYMENT_TARGET 10.11 CACHE STRING "")
-set(LLDB_USE_SYSTEM_DEBUGSERVER ON CACHE BOOL "")
+set(LLDB_USE_SYSTEM_DEBUGSERVER OFF CACHE BOOL "")
 set(LLVM_EXTERNALIZE_DEBUGINFO OFF CACHE BOOL "")
+
+set(LLVM_DISTRIBUTION_COMPONENTS
+  lldb
+  liblldb
+  lldb-argdumper
+  darwin-debug
+  debugserver
+  CACHE STRING "")

lldb/trunk/cmake/modules/LLDBStandalone.cmake

if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
 
   # We append the directory in which LLVMConfig.cmake lives. We expect LLVM's
   # CMake modules to be in that directory as well.
   list(APPEND CMAKE_MODULE_PATH "${LLVM_DIR}")
   include(AddLLVM)
   include(TableGen)
   include(HandleLLVMOptions)
   include(CheckAtomic)
+  include(LLVMDistributionSupport)
 
   if (PYTHON_EXECUTABLE STREQUAL "")
     set(Python_ADDITIONAL_VERSIONS 3.5 3.4 3.3 3.2 3.1 3.0 2.7 2.6 2.5)
     include(FindPythonInterp)
     if( NOT PYTHONINTERP_FOUND )
       message(FATAL_ERROR
               "Unable to find Python interpreter, required for builds and testing.
                Please install Python or specify the PYTHON_EXECUTABLE CMake variable.")