+CLANG_SRC_ROOT := @CLANG_SRC_ROOT@
+
+ifeq ($(PROJECT_NAME),$(LLVMPackageName))
+LLVM_SRC_ROOT := $(call realpath, @abs_top_srcdir@)
+LLVM_OBJ_ROOT := $(call realpath, @abs_top_builddir@)
+PROJ_SRC_ROOT := $(LLVM_SRC_ROOT)
+PROJ_SRC_DIR := $(LLVM_SRC_ROOT)$(patsubst $(PROJ_OBJ_ROOT)%,%,$(PROJ_OBJ_DIR))
+
+ifneq ($(CLANG_SRC_ROOT),)
+ CLANG_SRC_ROOT:= $(call realpath, $(CLANG_SRC_ROOT))
+ PROJ_SRC_DIR := $(patsubst $(LLVM_SRC_ROOT)/tools/clang%,$(CLANG_SRC_ROOT)%,$(PROJ_SRC_DIR))
+endif
+
+prefix := @prefix@
+PROJ_prefix := $(prefix)
+program_prefix := @program_prefix@
+PROJ_VERSION := $(LLVMVersion)
+else
+ifndef PROJ_SRC_ROOT
+$(error Projects must define PROJ_SRC_ROOT)
+endif
+ifndef PROJ_OBJ_ROOT
+$(error Projects must define PROJ_OBJ_ROOT)
+endif
+ifndef PROJ_INSTALL_ROOT
+$(error Projects must define PROJ_INSTALL_ROOT)
+endif
+ifndef LLVM_SRC_ROOT
+$(error Projects must define LLVM_SRC_ROOT)
+endif
+ifndef LLVM_OBJ_ROOT
+$(error Projects must define LLVM_OBJ_ROOT)
+endif
+PROJ_SRC_DIR := $(call realpath, $(PROJ_SRC_ROOT)/$(patsubst $(PROJ_OBJ_ROOT)%,%,$(PROJ_OBJ_DIR)))
+prefix := $(PROJ_INSTALL_ROOT)
+PROJ_prefix := $(prefix)
+ifndef PROJ_VERSION
+PROJ_VERSION := 1.0
+endif
+endif
+
+INTERNAL_PREFIX := @INTERNAL_PREFIX@
+ifneq ($(INTERNAL_PREFIX),)
+PROJ_internal_prefix := $(INTERNAL_PREFIX)
+else
+PROJ_internal_prefix := $(prefix)
+endif
+
+PROJ_bindir := $(PROJ_prefix)/bin
+PROJ_libdir := $(PROJ_prefix)/lib
+PROJ_datadir := $(PROJ_prefix)/share
+PROJ_docsdir := $(PROJ_prefix)/docs/llvm
+PROJ_etcdir := $(PROJ_prefix)/etc/llvm
+PROJ_includedir := $(PROJ_prefix)/include
+PROJ_infodir := $(PROJ_prefix)/info
+PROJ_mandir := $(PROJ_prefix)/share/man
+
+# Determine if we're on a unix type operating system
+LLVM_ON_UNIX:=@LLVM_ON_UNIX@
+LLVM_ON_WIN32:=@LLVM_ON_WIN32@
+
+# Host operating system for which LLVM will be run.