Make IntelJITEvents and OProfileJIT as optional libraries and add

optional library support to the llvm-build tool:
 - Add new command line parameter to llvm-build: “--enable-optional-libraries”
 - Add handing of new llvm-build library type “OptionalLibrary”
 - Update Cmake and automake build systems to pass correct flags to llvm-build
   based on configuration

Patch by Dan Malea!

llvm-svn: 156319

CMakeLists.txt

@@ -269,11 +269,21 @@ set(LLVMCONFIGLIBRARYDEPENDENCIESINC
   "${LLVM_BINARY_DIR}/tools/llvm-config/LibraryDependencies.inc")
 set(LLVMBUILDCMAKEFRAG
   "${LLVM_BINARY_DIR}/LLVMBuild.cmake")
+
+# Create the list of optional components that are enabled
+if (LLVM_USE_INTEL_JITEVENTS)
+  set(LLVMOPTIONALCOMPONENTS IntelJITEvents)
+endif (LLVM_USE_INTEL_JITEVENTS)
+if (LLVM_USE_OPROFILE)
+  set(LLVMOPTIONALCOMPONENTS ${LLVMOPTIONALCOMPONENTS} OProfileJIT)
+endif (LLVM_USE_OPROFILE)
+
 message(STATUS "Constructing LLVMBuild project information")
 execute_process(
   COMMAND ${PYTHON_EXECUTABLE} ${LLVMBUILDTOOL}
             --native-target "${LLVM_NATIVE_ARCH}"
             --enable-targets "${LLVM_TARGETS_TO_BUILD}"
+            --enable-optional-components "${LLVMOPTIONALCOMPONENTS}"
             --write-library-table ${LLVMCONFIGLIBRARYDEPENDENCIESINC}
             --write-cmake-fragment ${LLVMBUILDCMAKEFRAG}
             ERROR_VARIABLE LLVMBUILDOUTPUT

Makefile.config.in

@@ -351,3 +351,10 @@ INTEL_JITEVENTS_LIBDIR := @INTEL_JITEVENTS_LIBDIR@
 
 # Flags to control building support for OProfile JIT API
 USE_OPROFILE := @USE_OPROFILE@
+
+ifeq ($(USE_INTEL_JITEVENTS), 1)
+  OPTIONAL_COMPONENTS += IntelJITEvents
+endif
+ifeq ($(USE_OPROFILE), 1)
+  OPTIONAL_COMPONENTS += OProfileJIT
+endif

Makefile.rules

@@ -100,6 +100,7 @@ $(LLVMBuildMakeFrag): $(PROJ_SRC_ROOT)/Makefile.rules \
 	$(Verb) $(LLVMBuildTool) \
 	  --native-target "$(TARGET_NATIVE_ARCH)" \
 	  --enable-targets "$(TARGETS_TO_BUILD)" \
+	  --enable-optional-components "$(OPTIONAL_COMPONENTS)" \
 	  --write-library-table $(LLVMConfigLibraryDependenciesInc) \
 	  --write-make-fragment $(LLVMBuildMakeFrag)
 

lib/ExecutionEngine/IntelJITEvents/LLVMBuild.txt

@@ -18,6 +18,6 @@
 [common]
 
 [component_0]
-type = Library
+type = OptionalLibrary
 name = IntelJITEvents
 parent = ExecutionEngine

lib/ExecutionEngine/OProfileJIT/LLVMBuild.txt

@@ -18,6 +18,6 @@
 [common]
 
 [component_0]
-type = Library
+type = OptionalLibrary
 name = OProfileJIT
 parent = ExecutionEngine

utils/llvm-build/llvmbuild/componentinfo.py

@@ -95,12 +95,17 @@ class LibraryComponentInfo(ComponentInfo):
     type_name = 'Library'
 
     @staticmethod
-    def parse(subpath, items):
+    def parse_items(items):
         kwargs = ComponentInfo.parse_items(items)
         kwargs['library_name'] = items.get_optional_string('library_name')
         kwargs['required_libraries'] = items.get_list('required_libraries')
         kwargs['add_to_library_groups'] = items.get_list(
             'add_to_library_groups')
+        return kwargs
+
+    @staticmethod
+    def parse(subpath, items):
+        kwargs = LibraryComponentInfo.parse_items(items)
         return LibraryComponentInfo(subpath, **kwargs)
 
     def __init__(self, subpath, name, dependencies, parent, library_name,
@@ -165,6 +170,20 @@ class LibraryComponentInfo(ComponentInfo):
     def get_llvmconfig_component_name(self):
         return self.get_library_name().lower()
 
+class OptionalLibraryComponentInfo(LibraryComponentInfo):
+    type_name = "OptionalLibrary"
+
+    @staticmethod
+    def parse(subpath, items):
+      kwargs = LibraryComponentInfo.parse_items(items)
+      return OptionalLibraryComponentInfo(subpath, **kwargs)
+
+    def __init__(self, subpath, name, dependencies, parent, library_name,
+                 required_libraries, add_to_library_groups):
+      LibraryComponentInfo.__init__(self, subpath, name, dependencies, parent,
+                                    library_name, required_libraries,
+                                    add_to_library_groups)
+
 class LibraryGroupComponentInfo(ComponentInfo):
     type_name = 'LibraryGroup'
 
@@ -375,7 +394,7 @@ _component_type_map = dict(
     for t in (GroupComponentInfo,
               LibraryComponentInfo, LibraryGroupComponentInfo,
               ToolComponentInfo, BuildToolComponentInfo,
-              TargetGroupComponentInfo))
+              TargetGroupComponentInfo, OptionalLibraryComponentInfo))
 def load_from_path(path, subpath):
     # Load the LLVMBuild.txt file as an .ini format file.
     parser = ConfigParser.RawConfigParser()

utils/llvm-build/llvmbuild/main.py

@@ -312,15 +312,21 @@ subdirectories = %s
 
             f.close()
 
-    def write_library_table(self, output_path):
+    def write_library_table(self, output_path, enabled_optional_components):
         # Write out the mapping from component names to required libraries.
         #
         # We do this in topological order so that we know we can append the
         # dependencies for added library groups.
         entries = {}
         for c in self.ordered_component_infos:
+            # Skip optional components which are not enabled
+            if c.type_name == 'OptionalLibrary' \
+                and c.name not in enabled_optional_components:
+                continue
+
             # Only certain components are in the table.
-            if c.type_name not in ('Library', 'LibraryGroup', 'TargetGroup'):
+            if c.type_name not in ('Library', 'OptionalLibrary', \
+                                   'LibraryGroup', 'TargetGroup'):
                 continue
 
             # Compute the llvm-config "component name". For historical reasons,
@@ -328,7 +334,7 @@ subdirectories = %s
             llvmconfig_component_name = c.get_llvmconfig_component_name()
             
             # Get the library name, or None for LibraryGroups.
-            if c.type_name == 'Library':
+            if c.type_name == 'Library' or c.type_name == 'OptionalLibrary':
                 library_name = c.get_prefixed_library_name()
             else:
                 library_name = None
@@ -778,6 +784,11 @@ given by --build-root) at the same SUBPATH""",
                       help=("Enable the given space or semi-colon separated "
                             "list of targets, or all targets if not present"),
                       action="store", default=None)
+    group.add_option("", "--enable-optional-components",
+                      dest="optional_components", metavar="NAMES",
+                      help=("Enable the given space or semi-colon separated "
+                            "list of optional components"),
+                      action="store", default=None)
     parser.add_option_group(group)
 
     (opts, args) = parser.parse_args()
@@ -819,7 +830,8 @@ given by --build-root) at the same SUBPATH""",
 
     # Write out the required library table, if requested.
     if opts.write_library_table:
-        project_info.write_library_table(opts.write_library_table)
+        project_info.write_library_table(opts.write_library_table,
+                                         opts.optional_components)
 
     # Write out the make fragment, if requested.
     if opts.write_make_fragment: