Makefile: Switch Clang Makefiles to always include the top-level Clang Makefile.

 - This eliminates most dependencies on how Clang is installed relative to LLVM.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105637 91177308-0d34-0410-b5e6-96231b3b80d8

Makefile

-LEVEL = ../..
+##===- Makefile --------------------------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+# If CLANG_LEVEL is not set, then we are the top-level Makefile. Otherwise, we
+# are being included from a subdirectory makefile.
+
+ifndef CLANG_LEVEL
+
+IS_TOP_LEVEL := 1
+CLANG_LEVEL := .
 DIRS := include lib tools docs
 
 PARALLEL_DIRS :=
@@ -6,9 +21,22 @@ PARALLEL_DIRS :=
 ifeq ($(BUILD_EXAMPLES),1)
   PARALLEL_DIRS += examples
 endif
+endif
+
+###
+# Common Makefile code, shared by all Clang Makefiles.
 
+# Set LLVM source root level.
+LEVEL := $(CLANG_LEVEL)/../..
+
+# Include LLVM common makefile.
 include $(LEVEL)/Makefile.common
 
+###
+# Clang Top Level specific stuff.
+
+ifeq ($(IS_TOP_LEVEL),1)
+
 ifneq ($(PROJ_SRC_ROOT),$(PROJ_OBJ_ROOT))
 $(RecursiveTargets)::
 	$(Verb) if [ ! -f test/Makefile ]; then \
@@ -37,3 +65,5 @@ cscope.files:
 	                    -or -name '*.h' > cscope.files
 
 .PHONY: test report clean cscope.files
+
+endif

docs/Makefile

@@ -7,7 +7,7 @@
 # 
 ##===----------------------------------------------------------------------===##
 
-LEVEL      := ../../..
+CLANG_LEVEL := ..
 DIRS       := tools
 
 ifdef BUILD_FOR_WEBSITE
@@ -22,7 +22,7 @@ $(PROJ_OBJ_DIR)/doxygen.cfg: doxygen.cfg.in
 	  -e 's/@abs_top_builddir@/../g' > $@
 endif
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 
 HTML       := $(wildcard $(PROJ_SRC_DIR)/*.html) \
               $(wildcard $(PROJ_SRC_DIR)/*.css)

docs/tools/Makefile

@@ -37,8 +37,8 @@ clean:
 else
 
 # Otherwise, if not in BUILD_FOR_WEBSITE mode, use the project info.
-LEVEL := ../../../..
-include $(LEVEL)/Makefile.common
+CLANG_LEVEL := ../..
+include $(CLANG_LEVEL)/Makefile
 
 CLANG_VERSION := $(shell cat $(PROJ_SRC_DIR)/../../VER)
 

examples/Makefile

@@ -7,8 +7,8 @@
 #
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../..
+CLANG_LEVEL := ..
 
 PARALLEL_DIRS := clang-interpreter PrintFunctionNames wpa
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile

examples/PrintFunctionNames/Makefile

@@ -7,7 +7,7 @@
 # 
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 LIBRARYNAME = PrintFunctionNames
 
 CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
@@ -15,7 +15,7 @@ CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
 # Include this here so we can get the configuration of the targets that have
 # been configured for construction. We have to do this early so we can set up
 # LINK_COMPONENTS before including Makefile.rules
-include $(LEVEL)/Makefile.config
+include $(CLANG_LEVEL)/../../Makefile.config
 
 LINK_LIBS_IN_SHARED = 1
 SHARED_LIBRARY = 1
@@ -24,4 +24,4 @@ LINK_COMPONENTS := bitreader mc core
 USEDLIBS = clangIndex.a clangFrontend.a clangDriver.a clangSema.a \
 	   clangAnalysis.a clangAST.a clangParse.a clangLex.a clangBasic.a
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile

examples/clang-interpreter/Makefile

@@ -7,7 +7,7 @@
 #
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 
 TOOLNAME = clang-interpreter
 CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
@@ -19,7 +19,7 @@ TOOL_NO_EXPORTS = 1
 # Include this here so we can get the configuration of the targets that have
 # been configured for construction. We have to do this early so we can set up
 # LINK_COMPONENTS before including Makefile.rules
-include $(LEVEL)/Makefile.config
+include $(CLANG_LEVEL)/../../Makefile.config
 
 LINK_COMPONENTS := jit interpreter nativecodegen bitreader bitwriter ipo \
 	selectiondag asmparser
@@ -27,4 +27,4 @@ USEDLIBS = clangFrontend.a clangDriver.a clangCodeGen.a clangSema.a \
            clangChecker.a clangAnalysis.a clangRewrite.a  clangAST.a \
            clangParse.a clangLex.a clangBasic.a
 
-include $(LLVM_SRC_ROOT)/Makefile.rules
+include $(CLANG_LEVEL)/Makefile

examples/wpa/Makefile

@@ -7,7 +7,7 @@
 #
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 
 TOOLNAME = clang-wpa
 CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
@@ -19,10 +19,10 @@ TOOL_NO_EXPORTS = 1
 # Include this here so we can get the configuration of the targets that have
 # been configured for construction. We have to do this early so we can set up
 # LINK_COMPONENTS before including Makefile.rules
-include $(LEVEL)/Makefile.config
+include $(CLANG_LEVEL)/../../Makefile.config
 
 LINK_COMPONENTS := asmparser bitreader mc core
 USEDLIBS = clangIndex.a clangFrontend.a clangDriver.a clangSema.a \
 	   clangAnalysis.a clangAST.a clangParse.a clangLex.a clangBasic.a
 
-include $(LLVM_SRC_ROOT)/Makefile.rules
+include $(CLANG_LEVEL)/Makefile

include/Makefile

-LEVEL = ../../..
+CLANG_LEVEL := ..
 DIRS := clang clang-c
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile

include/clang-c/Makefile

-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 DIRS :=
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 
 install-local::
 	$(Echo) Installing Clang C API include files

include/clang/AST/Makefile

-LEVEL = ../../../../..
+CLANG_LEVEL := ../../..
 BUILT_SOURCES = StmtNodes.inc DeclNodes.inc
 TD_SRC_DIR = $(PROJ_SRC_DIR)/../Basic
 
 TABLEGEN_INC_FILES_COMMON = 1
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 
 INPUT_TDS = $(TD_SRC_DIR)/StmtNodes.td $(TD_SRC_DIR)/DeclNodes.td
 

include/clang/Basic/Makefile

-LEVEL = ../../../../..
+CLANG_LEVEL := ../../..
 BUILT_SOURCES = DiagnosticAnalysisKinds.inc DiagnosticASTKinds.inc \
 	DiagnosticCommonKinds.inc DiagnosticDriverKinds.inc \
 	DiagnosticFrontendKinds.inc DiagnosticLexKinds.inc \
@@ -7,7 +7,7 @@ BUILT_SOURCES = DiagnosticAnalysisKinds.inc DiagnosticASTKinds.inc \
 
 TABLEGEN_INC_FILES_COMMON = 1
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 
 INPUT_TDS = $(wildcard $(PROJ_SRC_DIR)/Diagnostic*.td)
 

include/clang/Driver/Makefile

-LEVEL = ../../../../..
+CLANG_LEVEL := ../../..
 BUILT_SOURCES = Options.inc CC1Options.inc CC1AsOptions.inc
 
 TABLEGEN_INC_FILES_COMMON = 1
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 
 $(ObjDir)/Options.inc.tmp : Options.td OptParser.td $(TBLGEN) $(ObjDir)/.dir
 	$(Echo) "Building Clang Driver Option tables with tblgen"

include/clang/Makefile

-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 DIRS := AST Basic Driver
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 
 install-local::
 	$(Echo) Installing Clang include files

lib/AST/Makefile

@@ -11,11 +11,11 @@
 #
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 LIBRARYNAME := clangAST
 BUILD_ARCHIVE = 1
 
 CPP.Flags += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 

lib/Analysis/Makefile

@@ -11,11 +11,11 @@
 #
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 LIBRARYNAME := clangAnalysis
 BUILD_ARCHIVE = 1
 
 CPP.Flags += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 

lib/Basic/Makefile

@@ -11,7 +11,7 @@
 #
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 LIBRARYNAME := clangBasic
 BUILD_ARCHIVE = 1
 
@@ -20,7 +20,7 @@ ifdef CLANG_VENDOR
 CPPFLAGS += -DCLANG_VENDOR='"$(CLANG_VENDOR) "'
 endif
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 
 SVN_REVISION := $(shell $(LLVM_SRC_ROOT)/utils/GetSourceVersion $(PROJ_SRC_DIR)/../..)
 

lib/Checker/Makefile

@@ -11,11 +11,11 @@
 #
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 LIBRARYNAME := clangChecker
 BUILD_ARCHIVE = 1
 
 CPP.Flags += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 

lib/CodeGen/Makefile

@@ -12,7 +12,7 @@
 #
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 LIBRARYNAME := clangCodeGen
 BUILD_ARCHIVE = 1
 
@@ -21,5 +21,5 @@ ifdef CLANG_VENDOR
 CPP.Flags += -DCLANG_VENDOR='"$(CLANG_VENDOR) "'
 endif
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile
 

lib/Driver/Makefile

@@ -7,10 +7,10 @@
 # 
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 LIBRARYNAME := clangDriver
 BUILD_ARCHIVE = 1
 
 CPPFLAGS += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile

lib/Frontend/Makefile

@@ -7,11 +7,11 @@
 # 
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../../../..
+CLANG_LEVEL := ../..
 LIBRARYNAME := clangFrontend
 BUILD_ARCHIVE = 1
 
 CPP.Flags += -I$(PROJ_SRC_DIR)/../../include -I$(PROJ_OBJ_DIR)/../../include
 
-include $(LEVEL)/Makefile.common
+include $(CLANG_LEVEL)/Makefile