Invert dependency between lldb-framework and lldb-suite

[xiaobai]

Summary

Currently, if you build lldb-framework the entire framework doesn't
actually build. In order to build the entire framework, you need to actually
build lldb-suite. This abstraction doesn't feel quite right because
lldb-framework truly does depend on lldb-suite (liblldb + related tools).

In this change I want to invert their dependency. This will mean that lldb and
finish_swig will depend on lldb-framework in a framework build, and lldb-suite
otherwise. Instead of adding conditional logic everywhere to handle this, I
introduce LLDB_SUITE_TARGET to handle it.

I tested this by building lldb with:

cmake .. -G Ninja -DCMAKE_BUILD_TYPE=Debug -DLLDB_CODESIGN_IDENTITY=""
-DLLDB_BUILD_FRAMEWORK=1 -DLLDB_USE_SYSTEM_SIX=1 -DCMAKE_INSTALL_PREFIX=""

and

ninja lldb

[xiaobai]

Accidentally merged the contents of two commits into one. Removing the contents of one of the commits from this one.

[labath]

lgtm

CMakeLists.txt

 
 if(APPLE)
   add_definitions(-DLLDB_USE_OS_LOG)
 endif()
 
 # lldb-suite is a dummy target that encompasses all the necessary tools and
 # libraries for building a fully-functioning liblldb.
 add_custom_target(lldb-suite)
+set(LLDB_SUITE_TARGET lldb-suite)
 
 option(LLDB_BUILD_FRAMEWORK "Build the Darwin LLDB.framework" Off)
 if(LLDB_BUILD_FRAMEWORK)
   if (CMAKE_VERSION VERSION_LESS 3.7)
     message(FATAL_ERROR "LLDB_BUILD_FRAMEWORK is not supported on CMake < 3.7")
   endif()
   if (NOT APPLE)
     message(FATAL_ERROR "LLDB.framework can only be generated when targeting Apple platforms")
   endif()
 
   # These are used to fill out LLDB-Info.plist. These are relevant when building
   # the framework, and must be defined before building liblldb.
   set(PRODUCT_NAME "LLDB")
   set(EXECUTABLE_NAME "LLDB")
   set(CURRENT_PROJECT_VERSION "360.99.0")
+  set(LLDB_SUITE_TARGET lldb-framework)
 
   set(LLDB_FRAMEWORK_DIR
     ${CMAKE_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${LLDB_FRAMEWORK_INSTALL_DIR})
 endif()
 
 add_subdirectory(docs)
 if (NOT LLDB_DISABLE_PYTHON)
   if(LLDB_USE_SYSTEM_SIX)
if(LLDB_INCLUDE_TESTS)
   add_subdirectory(unittests)
   add_subdirectory(lit)
   add_subdirectory(utils/lldb-dotest)
 endif()
 
 if (LLDB_BUILD_FRAMEWORK)
   add_custom_target(lldb-framework)
   include(LLDBFramework)
-  add_dependencies(lldb-suite lldb-framework)
 endif()
-add_dependencies(lldb-suite liblldb)
 
 if (NOT LLDB_DISABLE_PYTHON)
     # Add a Post-Build Event to copy over Python files and create the symlink
     # to liblldb.so for the Python API(hardlink on Windows)
     add_custom_target(finish_swig ALL
         COMMAND
            ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/scripts/finishSwigWrapperClasses.py
                --srcRoot=${LLDB_SOURCE_DIR}
                --targetDir=${LLDB_PYTHON_TARGET_DIR}
                --cfgBldDir=${LLDB_PYTHON_TARGET_DIR}
                --prefix=${CMAKE_BINARY_DIR}
                --cmakeBuildConfiguration=${CMAKE_CFG_INTDIR}
                --lldbLibDir=lib${LLVM_LIBDIR_SUFFIX}
                ${SIX_EXTRA_ARGS}
                ${FINISH_EXTRA_ARGS}
         VERBATIM
         DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/scripts/finishSwigWrapperClasses.py
         DEPENDS ${LLDB_PYTHON_TARGET_DIR}/lldb.py
         COMMENT "Python script sym-linking LLDB Python API")
 
     # We depend on liblldb and lldb-argdumper being built before we can do this step.
-    add_dependencies(finish_swig lldb-suite)
+    add_dependencies(finish_swig ${LLDB_SUITE_TARGET})
 
     # If we build the readline module, we depend on that happening
     # first.
     if (TARGET readline)
         add_dependencies(finish_swig readline)
     endif()
 
     # Ensure we do the python post-build step when building lldb.

cmake/modules/LLDBFramework.cmake

set_target_properties(liblldb PROPERTIES
   OUTPUT_NAME LLDB
   FRAMEWORK On
   FRAMEWORK_VERSION ${LLDB_FRAMEWORK_VERSION}
   MACOSX_FRAMEWORK_INFO_PLIST ${LLDB_SOURCE_DIR}/resources/LLDB-Info.plist
   LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${LLDB_FRAMEWORK_INSTALL_DIR}
   PUBLIC_HEADER "${framework_headers}")
 
 add_dependencies(lldb-framework
-  liblldb
-  lldb-framework-headers)
+  lldb-framework-headers
+  lldb-suite)

source/API/CMakeLists.txt

LINK_LIBS
     lldbSymbol
     lldbTarget
     lldbUtility
     ${LLDB_ALL_PLUGINS}
   LINK_COMPONENTS
     Support
   )
 
+add_dependencies(lldb-suite liblldb)
+
 if (MSVC)
   set_property(SOURCE ${LLDB_WRAP_PYTHON} APPEND_STRING PROPERTY COMPILE_FLAGS " /W0")
 else()
   set_property(SOURCE ${LLDB_WRAP_PYTHON} APPEND_STRING PROPERTY COMPILE_FLAGS " -w")
 endif()
 
 set_source_files_properties(${LLDB_WRAP_PYTHON} PROPERTIES GENERATED 1)
 if (CLANG_CL)
   set_property(SOURCE ${LLDB_WRAP_PYTHON} APPEND_STRING
     PROPERTY COMPILE_FLAGS " -Wno-unused-function")
 endif()
 if (LLVM_COMPILER_IS_GCC_COMPATIBLE AND
     NOT "${CMAKE_SYSTEM_NAME}" MATCHES "Darwin")
   set_property(SOURCE ${LLDB_WRAP_PYTHON} APPEND_STRING
     PROPERTY COMPILE_FLAGS " -Wno-sequence-point -Wno-cast-qual")
 endif ()
 
 set_target_properties(liblldb
   PROPERTIES
   VERSION ${LLDB_VERSION}
-  )
 
 if (NOT CMAKE_SYSTEM_NAME MATCHES "Windows")
   if (NOT LLDB_EXPORT_ALL_SYMBOLS)
     # If we're not exporting all symbols, we'll want to explicitly set
     # the exported symbols here.  This prevents 'log enable --stack ...'
     # from working on some systems but limits the liblldb size.
     MESSAGE("-- Symbols (liblldb): exporting all symbols from the lldb namespace")
     add_llvm_symbol_exports(liblldb ${CMAKE_CURRENT_SOURCE_DIR}/liblldb.exports)
if ( CMAKE_SYSTEM_NAME MATCHES "Windows" )
   # so only it needs to explicitly link against ${PYTHON_LIBRARY}
   if (MSVC AND NOT LLDB_DISABLE_PYTHON)
     target_link_libraries(liblldb PRIVATE ${PYTHON_LIBRARY})
   endif()
 else()
   set_target_properties(liblldb
     PROPERTIES
     OUTPUT_NAME lldb
-    )
 endif()
 
 if (LLDB_WRAP_PYTHON)
   add_dependencies(liblldb swig_wrapper)
 endif()

tools/driver/CMakeLists.txt

add_lldb_tool(lldb
   LINK_COMPONENTS
     Support
   )
 
 if ( CMAKE_SYSTEM_NAME MATCHES "Windows" )
   add_definitions( -DIMPORT_LIBLLDB )
 endif()
 
-add_dependencies(lldb lldb-suite)
+add_dependencies(lldb ${LLDB_SUITE_TARGET})