Revert commit 145449 (ddunbar) since it is breaking the dragonegg buildbots.

Original commit message:
llvm-config: Replace with C++ version (was llvm-config-2).
 - Reapply of r144300, with lots of fixes/migration easement in between.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145582 91177308-0d34-0410-b5e6-96231b3b80d8

Author: CunningBaldrick

CMakeLists.txt

@@ -230,7 +230,7 @@ endif()
 
 set(LLVMBUILDTOOL "${LLVM_MAIN_SRC_DIR}/utils/llvm-build/llvm-build")
 set(LLVMCONFIGLIBRARYDEPENDENCIESINC
-  "${LLVM_BINARY_DIR}/tools/llvm-config/LibraryDependencies.inc")
+  "${LLVM_BINARY_DIR}/tools/llvm-config-2/LibraryDependencies.inc")
 set(LLVMBUILDCMAKEFRAG
   "${LLVM_BINARY_DIR}/LLVMBuild.cmake")
 message(STATUS "Constructing LLVMBuild project information")

Makefile

@@ -27,11 +27,11 @@ LEVEL := .
 ifneq ($(findstring llvmCore, $(RC_ProjectName)),llvmCore)  # Normal build (not "Apple-style").
 
 ifeq ($(BUILD_DIRS_ONLY),1)
-  DIRS := lib/Support lib/TableGen utils tools/llvm-config
+  DIRS := lib/Support lib/TableGen utils tools/llvm-config-2
   OPTIONAL_DIRS := tools/clang/utils/TableGen
 else
   DIRS := lib/Support lib/TableGen utils lib/VMCore lib tools/llvm-shlib \
-          tools/llvm-config tools runtime docs unittests
+          tools/llvm-config tools/llvm-config-2 tools runtime docs unittests
   OPTIONAL_DIRS := projects bindings
 endif
 

Makefile.rules

@@ -79,7 +79,7 @@ LLVMBuildTool	:= $(PROJ_SRC_ROOT)/utils/llvm-build/llvm-build
 # The files we are going to generate using llvm-build.
 LLVMBuildMakeFrag := $(PROJ_OBJ_ROOT)/Makefile.llvmbuild
 LLVMConfigLibraryDependenciesInc := \
-	$(PROJ_OBJ_ROOT)/tools/llvm-config/LibraryDependencies.inc
+	$(PROJ_OBJ_ROOT)/tools/llvm-config-2/LibraryDependencies.inc
 
 # This is for temporary backwards compatibility.
 ifndef TARGET_NATIVE_ARCH
@@ -528,9 +528,9 @@ ifndef LLVM_TBLGEN
   endif
 endif
 ifeq ($(LLVM_CROSS_COMPILING),1)
-  LLVM_CONFIG := $(BuildLLVMToolDir)/llvm-config$(BUILD_EXEEXT)
+  LLVM_CONFIG := $(BuildLLVMToolDir)/llvm-config-2$(BUILD_EXEEXT)
 else
-  LLVM_CONFIG := $(LLVMToolDir)/llvm-config$(EXEEXT)
+  LLVM_CONFIG := $(LLVMToolDir)/llvm-config-2$(EXEEXT)
 endif
 ifndef LLVMLD
 LLVMLD    := $(LLVMToolDir)/llvm-ld$(EXEEXT)

autoconf/configure.ac

@@ -1578,6 +1578,9 @@ if test -f ${srcdir}/tools/clang/README.txt; then
   AC_CONFIG_FILES([tools/clang/docs/doxygen.cfg])
 fi
 
+dnl Do the first stage of configuration for llvm-config.in.
+AC_CONFIG_FILES([tools/llvm-config/llvm-config.in])
+
 dnl OCaml findlib META file
 AC_CONFIG_FILES([bindings/ocaml/llvm/META.llvm])
 

configure

@@ -21100,7 +21100,7 @@ if test -f ${srcdir}/tools/clang/README.txt; then
 
 fi
 
-
+ac_config_files="$ac_config_files tools/llvm-config/llvm-config.in"
 
 
 ac_config_files="$ac_config_files bindings/ocaml/llvm/META.llvm"

tools/CMakeLists.txt

@@ -11,9 +11,16 @@ if( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/polly/CMakeLists.txt )
 endif( EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/polly/CMakeLists.txt )
 
 if( NOT WIN32 OR MSYS OR CYGWIN )
-  # We currently require 'sed' to build llvm-config, so don't try to build it
-  # on pure Win32.
+  # It is useful to build llvm-config before the other tools, so we
+  # have a fresh LibDeps.txt for regenerating the hard-coded library
+  # dependencies. llvm-config/CMakeLists.txt takes care of this but we
+  # must keep llvm-config as the first entry on the list of tools to
+  # be built.
   add_subdirectory(llvm-config)
+
+  # We currently require 'sed' to build llvm-config-2, so don't try to build it
+  # on pure Win32.
+  add_subdirectory(llvm-config-2)
 endif()
 
 add_subdirectory(opt)

tools/Makefile

@@ -34,7 +34,7 @@ PARALLEL_DIRS := opt llvm-as llvm-dis \
                  bugpoint llvm-bcanalyzer llvm-stub \
                  llvm-diff macho-dump llvm-objdump \
 	         llvm-rtdyld llvm-dwarfdump llvm-cov \
-	         llvm-size
+	         llvm-size llvm-config-2
 
 # Let users override the set of tools to build from the command line.
 ifdef ONLY_TOOLS

tools/llvm-config-2/BuildVariables.inc.in

@@ -0,0 +1,26 @@
+//===-- BuildVariables.inc.in - llvm-config build variables -*- C++ -*-----===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is configured by the build system to define the variables
+// llvm-config wants to report to the user, but which can only be determined at
+// build time.
+//
+// The non .in variant of this file has been autogenerated by the LLVM build. Do
+// not edit!
+//
+//===----------------------------------------------------------------------===//
+
+#define LLVM_SRC_ROOT "@LLVM_SRC_ROOT@"
+#define LLVM_OBJ_ROOT "@LLVM_OBJ_ROOT@"
+#define LLVM_CPPFLAGS "@LLVM_CPPFLAGS@"
+#define LLVM_CFLAGS "@LLVM_CFLAGS@"
+#define LLVM_LDFLAGS "@LLVM_LDFLAGS@"
+#define LLVM_CXXFLAGS "@LLVM_CXXFLAGS@"
+#define LLVM_BUILDMODE "@LLVM_BUILDMODE@"
+#define LLVM_SYSTEM_LIBS "@LLVM_SYSTEM_LIBS@"

tools/llvm-config-2/CMakeLists.txt

@@ -0,0 +1,41 @@
+set(LLVM_LINK_COMPONENTS support)
+
+# We need to generate the BuildVariables.inc file containing values which are
+# only defined when under certain build modes. Unfortunately, that precludes
+# doing this inside CMake so we have to shell out to sed. For now, that means we
+# can't expect to build llvm-config on Window.s
+set(BUILDVARIABLES_SRCPATH ${CMAKE_CURRENT_SOURCE_DIR}/BuildVariables.inc.in)
+set(BUILDVARIABLES_OBJPATH ${CMAKE_CURRENT_BINARY_DIR}/BuildVariables.inc)
+set(SEDSCRIPT_OBJPATH ${CMAKE_CURRENT_BINARY_DIR}/BuildVariables.configure.sed)
+
+# Compute the substitution values for various items.
+get_system_libs(LLVM_SYSTEM_LIBS_LIST)
+foreach(l ${LLVM_SYSTEM_LIBS_LIST})
+  set(SYSTEM_LIBS ${SYSTEM_LIBS} "-l${l}")
+endforeach()
+set(C_FLGS "${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
+set(CXX_FLGS "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
+set(CPP_FLGS "${CMAKE_CPP_FLAGS} ${CMAKE_CPP_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
+
+add_custom_command(OUTPUT ${BUILDVARIABLES_OBJPATH}
+  COMMAND echo s!@LLVM_SRC_ROOT@!${LLVM_MAIN_SRC_DIR}! > ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_OBJ_ROOT@!${LLVM_BINARY_DIR}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_CPPFLAGS@!${CPP_FLGS}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_CFLAGS@!${C_FLGS}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_CXXFLAGS@!${CXX_FLGS}! >> ${SEDSCRIPT_OBJPATH}
+  # TODO: Use general flags for linking! not just for shared libs:
+  COMMAND echo s!@LLVM_LDFLAGS@!${CMAKE_SHARED_LINKER_FLAGS}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_BUILDMODE@!${CMAKE_BUILD_TYPE}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND echo s!@LLVM_SYSTEM_LIBS@!${SYSTEM_LIBS}! >> ${SEDSCRIPT_OBJPATH}
+  COMMAND sed -f ${SEDSCRIPT_OBJPATH} < ${BUILDVARIABLES_SRCPATH} > ${BUILDVARIABLES_OBJPATH}
+  VERBATIM
+  COMMENT "Building BuildVariables.inc include."
+  )
+
+# Add the llvm-config tool.
+add_llvm_tool(llvm-config-2
+  llvm-config.cpp
+  )
+
+# Add the dependency on the generation step.
+add_file_dependencies(${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.cpp ${BUILDVARIABLES_OBJPATH})

tools/llvm-config-2/Makefile

@@ -0,0 +1,57 @@
+##===- tools/llvm-config/Makefile---------------------------*- Makefile -*-===##
+# 
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+# 
+##===----------------------------------------------------------------------===##
+
+LEVEL := ../..
+TOOLNAME := llvm-config-2
+USEDLIBS := LLVMSupport.a
+
+# We generate sources in the build directory, make sure it is in the include
+# paths.
+INCLUDE_BUILD_DIR := 1
+
+# This tool has no plugins, optimize startup time.
+TOOL_NO_EXPORTS := 1
+
+# Note that we have to use lazy expansion here.
+BUILDVARIABLES_SRCPATH = $(PROJ_SRC_ROOT)/tools/$(TOOLNAME)/BuildVariables.inc.in
+BUILDVARIABLES_OBJPATH = $(ObjDir)/BuildVariables.inc
+BUILT_SOURCES = $(BUILDVARIABLES_OBJPATH)
+
+include $(LEVEL)/Makefile.common
+
+# Combine preprocessor flags (except for -I) and CXX flags.
+SUB_CPPFLAGS := ${CPP.BaseFlags}
+SUB_CFLAGS   := ${CPP.BaseFlags} ${C.Flags}
+SUB_CXXFLAGS := ${CPP.BaseFlags} ${CXX.Flags}
+
+# This is blank for now.  We need to be careful about adding stuff here:
+# LDFLAGS tend not to be portable, and we don't currently require the
+# user to use libtool when linking against LLVM.
+SUB_LDFLAGS :=
+
+$(ObjDir)/BuildVariables.inc: $(BUILDVARIABLES_SRCPATH) Makefile $(ObjDir)/.dir
+	$(Echo) "Building llvm-config BuildVariables.inc file."
+	$(Verb) $(ECHO) 's/@LLVM_SRC_ROOT@/$(subst /,\/,$(LLVM_SRC_ROOT))/' \
+	  > temp.sed
+	$(Verb) $(ECHO) 's/@LLVM_OBJ_ROOT@/$(subst /,\/,$(LLVM_OBJ_ROOT))/' \
+	  >> temp.sed
+	$(Verb) $(ECHO) 's/@LLVM_CPPFLAGS@/$(subst /,\/,$(SUB_CPPFLAGS))/' \
+	  >> temp.sed
+	$(Verb) $(ECHO) 's/@LLVM_CFLAGS@/$(subst /,\/,$(SUB_CFLAGS))/' \
+	  >> temp.sed
+	$(Verb) $(ECHO) 's/@LLVM_CXXFLAGS@/$(subst /,\/,$(SUB_CXXFLAGS))/' \
+	  >> temp.sed
+	$(Verb) $(ECHO) 's/@LLVM_LDFLAGS@/$(subst /,\/,$(SUB_LDFLAGS))/' \
+	  >> temp.sed
+	$(Verb) $(ECHO) 's/@LLVM_BUILDMODE@/$(subst /,\/,$(BuildMode))/' \
+	  >> temp.sed
+	$(Verb) $(ECHO) 's/@LLVM_SYSTEM_LIBS@/$(subst /,\/,$(LIBS))/' \
+	  >> temp.sed
+	$(Verb) $(SED) -f temp.sed < $< > $@
+	$(Verb) $(RM) temp.sed