-PARALLEL_DIRS := llvm-config llvm-as llvm-dis opt gccas llc llvm-link lli gccld\
- llvm-stub analyze llvm-extract llvm-nm llvm-prof llvm-ar \
- llvm-ranlib llvm-bcanalyzer llvmc llvm-ld llvm-db bugpoint \
- llvm2cpp
+
+# Build clang if present.
+OPTIONAL_PARALLEL_DIRS := clang
+
+# 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.
+DIRS := llvm-config
+PARALLEL_DIRS := opt llvm-as llvm-dis \
+ llc llvm-ranlib llvm-ar llvm-nm \
+ llvm-ld llvm-prof llvm-link \
+ lli gccas gccld llvm-extract llvm-db \
+ bugpoint llvm-bcanalyzer llvm-stub \
+ llvm-mc llvmc
+
+# Let users override the set of tools to build from the command line.
+ifdef ONLY_TOOLS
+ OPTIONAL_PARALLEL_DIRS :=
+ PARALLEL_DIRS := $(ONLY_TOOLS)
+endif
+
+include $(LEVEL)/Makefile.config
+
+ifeq ($(ENABLE_PIC),1)
+ DIRS += lto
+ ifdef BINUTILS_INCDIR
+ DIRS += gold
+ endif
+endif
+
+# No support for lto / gold on windows targets
+ifeq ($(OS), $(filter $(OS), Cygwin MingW))
+ DIRS := $(filter-out lto gold, $(DIRS))
+endif