Revert r125956, which broke the build if you _don't_ have lldb checked out.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125964 91177308-0d34-0410-b5e6-96231b3b80d8

Author: resistor

tools/Makefile

@@ -12,10 +12,6 @@ LEVEL := ..
 # Build clang if present.
 OPTIONAL_PARALLEL_DIRS := clang
 
-# Build LLDB if present. Note LLDB must be built last as it depends on the
-# wider LLVM infrastructure (including Clang). 
-OPTIONAL_DIRS := lldb
-
 # NOTE: The tools are organized into five groups of four consisting of one
 # large and three small executables. This is done to minimize memory load
 # in parallel builds.  Please retain this ordering.
@@ -30,8 +26,7 @@ PARALLEL_DIRS := opt llvm-as llvm-dis \
 # Let users override the set of tools to build from the command line.
 ifdef ONLY_TOOLS
   OPTIONAL_PARALLEL_DIRS :=
-  OPTIONAL_DIRS := $(findstring lldb,$(ONLY_TOOLS))
-  PARALLEL_DIRS := $(filter-out lldb,$(ONLY_TOOLS))
+  PARALLEL_DIRS := $(ONLY_TOOLS)
 endif
 
 include $(LEVEL)/Makefile.config