llvm-config: Replace with C++ version (was llvm-config-2).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144300 91177308-0d34-0410-b5e6-96231b3b80d8

10 files changed, 58 insertions, 932 deletions

diff --git a/tools/CMakeLists.txt b/tools/CMakeLists.txt
index 28b36dcdfd1..46d08a4b173 100644
--- a/tools/CMakeLists.txt
+++ b/tools/CMakeLists.txt
@@ -11,16 +11,9 @@ 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 )
-  # 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.
+  # We currently require 'sed' to build llvm-config, so don't try to build it on
+  # pure Win32.
   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)
diff --git a/tools/Makefile b/tools/Makefile
index 278546bc162..2da39177815 100644
--- a/tools/Makefile
+++ b/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-config-2
+	         llvm-size
 
 # Let users override the set of tools to build from the command line.
 ifdef ONLY_TOOLS
diff --git a/tools/llvm-config-2/CMakeLists.txt b/tools/llvm-config-2/CMakeLists.txt
deleted file mode 100644
index 3c7169d382e..00000000000
--- a/tools/llvm-config-2/CMakeLists.txt
+++ /dev/null
@@ -1,41 +0,0 @@
-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})
diff --git a/tools/llvm-config-2/Makefile b/tools/llvm-config-2/Makefile
deleted file mode 100644
index 08e084429db..00000000000
--- a/tools/llvm-config-2/Makefile
+++ /dev/null
@@ -1,57 +0,0 @@
-##===- 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
diff --git a/tools/llvm-config-2/BuildVariables.inc.in b/tools/llvm-config/BuildVariables.inc.in
index 5969772c9dc..5969772c9dc 100644
--- a/tools/llvm-config-2/BuildVariables.inc.in
+++ b/tools/llvm-config/BuildVariables.inc.in
diff --git a/tools/llvm-config/CMakeLists.txt b/tools/llvm-config/CMakeLists.txt
index 53f00846b79..ed26ba95553 100644
--- a/tools/llvm-config/CMakeLists.txt
+++ b/tools/llvm-config/CMakeLists.txt
@@ -1,138 +1,41 @@
-include(TestBigEndian)
+set(LLVM_LINK_COMPONENTS support)
 
-include(FindPerl)
-if( NOT PERL_FOUND )
-  message(FATAL_ERROR "Perl required but not found!")
-endif( NOT PERL_FOUND )
-
-set(PERL ${PERL_EXECUTABLE})
-set(VERSION PACKAGE_VERSION)
-set(PREFIX ${CMAKE_INSTALL_PREFIX})
-set(abs_top_srcdir ${LLVM_MAIN_SRC_DIR})
-set(abs_top_builddir ${LLVM_BINARY_DIR})
-execute_process(COMMAND date
-  OUTPUT_VARIABLE LLVM_CONFIGTIME
-  OUTPUT_STRIP_TRAILING_WHITESPACE)
-# LLVM_ON_UNIX and LLVM_ON_WIN32 already set.
-# those are set to blank by `autoconf' on MinGW, so it seems they are not required:
-#set(LLVMGCCDIR "")
-#set(LLVMGCC "")
-#set(LLVMGXX "")
-test_big_endian(IS_BIG_ENDIAN)
-if( IS_BIG_ENDIAN )
-  set(ENDIAN "big")
-else( IS_BIG_ENDIAN )
-  set(ENDIAN "little")
-endif( IS_BIG_ENDIAN )
-set(SHLIBEXT ${LTDL_SHLIB_EXT})
-#EXEEXT already set.
-set(OS "${CMAKE_SYSTEM}")
-set(target "${TARGET_TRIPLE}")
-set(ARCH "${LLVM_NATIVE_ARCH}")
+# 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(LLVM_SYSTEM_LIBS ${LLVM_SYSTEM_LIBS} "-l${l}")
+  set(SYSTEM_LIBS ${SYSTEM_LIBS} "-l${l}")
 endforeach()
-
-foreach(c ${LLVM_TARGETS_TO_BUILD})
-  set(TARGETS_BUILT "${TARGETS_BUILT} ${c}")
-endforeach(c)
-set(TARGETS_TO_BUILD ${TARGETS_BUILT})
-set(TARGET_HAS_JIT "1")  # TODO
-
-# Avoids replacement at config-time:
-set(LLVM_CPPFLAGS "@LLVM_CPPFLAGS@")
-set(LLVM_CFLAGS "@LLVM_CFLAGS@")
-set(LLVM_CXXFLAGS "@LLVM_CXXFLAGS@")
-set(LLVM_LDFLAGS "@LLVM_LDFLAGS@")
-set(LIBS "@LIBS@")
-set(LLVM_BUILDMODE "@LLVM_BUILDMODE@")
-set(LLVM_OBJ_SUFFIX "@LLVM_OBJ_SUFFIX@")
-
-configure_file(
-  ${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.in.in
-  ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in
-  @ONLY
-)
-
-set(LIBDEPS LibDeps.txt)
-set(LIBDEPS_TMP LibDeps.txt.tmp)
-set(FINAL_LIBDEPS FinalLibDeps.txt)
-set(LLVM_CONFIG ${LLVM_TOOLS_BINARY_DIR}/llvm-config)
-set(LLVM_CONFIG_IN ${CMAKE_CURRENT_BINARY_DIR}/llvm-config.in)
-
-if( CMAKE_CROSSCOMPILING )
-  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
-endif()
-
-find_program(NM_PATH nm PATH_SUFFIXES /bin)
-
-if( NOT NM_PATH )
-  message(FATAL_ERROR "`nm' not found")
-endif()
-
-get_property(llvm_libs GLOBAL PROPERTY LLVM_LIBS)
-
-add_custom_command(OUTPUT ${LIBDEPS_TMP}
-  COMMAND ${PERL_EXECUTABLE} ${LLVM_MAIN_SRC_DIR}/utils/GenLibDeps.pl -flat ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}/${CMAKE_CFG_INTDIR} ${NM_PATH} > ${LIBDEPS_TMP}
-  DEPENDS ${llvm_libs}
-  COMMENT "Regenerating ${LIBDEPS_TMP}")
-
-add_custom_command(OUTPUT ${LIBDEPS}
-  COMMAND ${CMAKE_COMMAND} -E copy_if_different ${LIBDEPS_TMP} ${LIBDEPS}
-  DEPENDS ${LIBDEPS_TMP}
-  COMMENT "Updating ${LIBDEPS} if necessary...")
-
-# This must stop the build if find-cycles.pl returns error:
-add_custom_command(OUTPUT ${FINAL_LIBDEPS}
-  COMMAND ${CMAKE_COMMAND} -E remove -f ${FINAL_LIBDEPS} ${FINAL_LIBDEPS}.tmp
-  COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/find-cycles.pl < ${LIBDEPS} > ${FINAL_LIBDEPS}.tmp
-  COMMAND ${CMAKE_COMMAND} -E copy ${FINAL_LIBDEPS}.tmp ${FINAL_LIBDEPS}
-  DEPENDS ${LIBDEPS}
-  COMMENT "Checking for cyclic dependencies between LLVM libraries.")
-
 set(C_FLGS "${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}")
 
-# We don't want certain flags on the output of
-# llvm-config --cflags --cxxflags
-macro(remove_option_from_llvm_config option)
-  llvm_replace_compiler_option(C_FLGS "${option}" "")
-  llvm_replace_compiler_option(CXX_FLGS "${option}" "")
-  llvm_replace_compiler_option(CPP_FLGS "${option}" "")
-endmacro(remove_option_from_llvm_config)
-remove_option_from_llvm_config("-pedantic")
-remove_option_from_llvm_config("-Wall")
-remove_option_from_llvm_config("-W")
-
-add_custom_command(OUTPUT ${LLVM_CONFIG}
-  COMMAND echo s!@LLVM_CPPFLAGS@!${CPP_FLGS}! > temp.sed
-  COMMAND echo s!@LLVM_CFLAGS@!${C_FLGS}! >> temp.sed
-  COMMAND echo s!@LLVM_CXXFLAGS@!${CXX_FLGS}! >> temp.sed
+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}! >> temp.sed
-  COMMAND echo s!@LIBS@!${LLVM_SYSTEM_LIBS}! >> temp.sed
-  COMMAND echo s!@LLVM_BUILDMODE@!${CMAKE_BUILD_TYPE}! >> temp.sed
-  COMMAND echo s!@LLVM_OBJ_SUFFIX@!! >> temp.sed
-  COMMAND sed -f temp.sed < ${LLVM_CONFIG_IN} > ${LLVM_CONFIG}
-  COMMAND ${CMAKE_COMMAND} -E remove -f temp.sed
-  COMMAND cat ${FINAL_LIBDEPS} >> ${LLVM_CONFIG}
-  COMMAND chmod +x ${LLVM_CONFIG}
+  COMMAND echo s!@LLVM_LDFLAGS@!${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
-  DEPENDS ${FINAL_LIBDEPS} ${LLVM_CONFIG_IN}
-  COMMENT "Building llvm-config script."
+  COMMENT "Building BuildVariables.inc include."
   )
 
-add_custom_target(llvm-config.target ALL
-  DEPENDS ${LLVM_CONFIG})
-
-# Ensure we build llvm-config after we build all of the libraries so that we
-# have their full dependencies.
-add_dependencies(llvm-config.target ${llvm_libs})
+# Add the llvm-config tool.
+add_llvm_tool(llvm-config
+  llvm-config.cpp
+  )
 
-install(FILES ${LLVM_CONFIG}
-  PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE
-  WORLD_READ WORLD_EXECUTE
-  DESTINATION bin)
+# Add the dependency on the generation step.
+add_file_dependencies(${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.cpp ${BUILDVARIABLES_OBJPATH})
diff --git a/tools/llvm-config/Makefile b/tools/llvm-config/Makefile
index 184919ea971..a7a2a63f99b 100644
--- a/tools/llvm-config/Makefile
+++ b/tools/llvm-config/Makefile
@@ -1,5 +1,5 @@
-##===- tools/llvm-config/Makefile --------------------------*- Makefile -*-===##
-#
+##===- tools/llvm-config/Makefile---------------------------*- Makefile -*-===##
+# 
 #                     The LLVM Compiler Infrastructure
 #
 # This file is distributed under the University of Illinois Open Source
@@ -7,57 +7,42 @@
 # 
 ##===----------------------------------------------------------------------===##
 
-LEVEL = ../..
+LEVEL := ../..
+TOOLNAME := llvm-config
+USEDLIBS := LLVMSupport.a
 
-EXTRA_DIST = LibDeps.txt FinalLibDeps.txt llvm-config.in.in find-cycles.pl
+# We generate sources in the build directory, make sure it is in the include
+# paths.
+INCLUDE_BUILD_DIR := 1
 
-include $(LEVEL)/Makefile.common
+# This tool has no plugins, optimize startup time.
+TOOL_NO_EXPORTS := 1
 
-# If we don't have Perl, we can't generate the library dependencies upon which 
-# llvm-config depends. Therefore, only if we detect perl will we do anything
-# useful.
-ifeq ($(HAVE_PERL),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}
+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 = 
-
-FinalLibDeps = $(PROJ_OBJ_DIR)/FinalLibDeps.txt
-LibDeps      = $(PROJ_OBJ_DIR)/LibDeps.txt
-LibDepsTemp  = $(PROJ_OBJ_DIR)/LibDeps.txt.tmp
-GenLibDeps   = $(PROJ_SRC_ROOT)/utils/GenLibDeps.pl
-
-$(LibDepsTemp): $(GenLibDeps) $(LibDir) $(wildcard $(LibDir)/*.a $(LibDir)/*.o)
-	$(Echo) "Regenerating LibDeps.txt.tmp"
-	$(Verb) $(PERL) $(GenLibDeps) -flat $(LibDir) "$(NM_PATH)" > $(LibDepsTemp)
-
-$(LibDeps): $(LibDepsTemp)
-	$(Verb) $(CMP) -s $@ $< || ( $(CP) $< $@ && \
-	  $(EchoCmd) Updated LibDeps.txt because dependencies changed )
-
-# Find all the cyclic dependencies between various LLVM libraries, so we
-# don't have to process them at runtime.
-$(FinalLibDeps): find-cycles.pl $(LibDeps)
-	$(Echo) "Checking for cyclic dependencies between LLVM libraries."
-	$(Verb) $(PERL) $< < $(LibDeps) > $@ || rm -f $@
+SUB_LDFLAGS :=
 
-# Rerun our configure substitutions as needed.
-ConfigInIn = $(PROJ_SRC_DIR)/llvm-config.in.in
-llvm-config.in: $(ConfigInIn) $(ConfigStatusScript)
-	$(Verb) cd $(PROJ_OBJ_ROOT) ; \
-		$(ConfigStatusScript) tools/llvm-config/llvm-config.in
-
-# Build our final script.
-$(ToolDir)/llvm-config: llvm-config.in $(FinalLibDeps)
-	$(Echo) "Building llvm-config script."
-	$(Verb) $(ECHO) 's/@LLVM_CPPFLAGS@/$(subst /,\/,$(SUB_CPPFLAGS))/' \
+$(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))/' \
@@ -66,28 +51,7 @@ $(ToolDir)/llvm-config: llvm-config.in $(FinalLibDeps)
 	  >> temp.sed
 	$(Verb) $(ECHO) 's/@LLVM_BUILDMODE@/$(subst /,\/,$(BuildMode))/' \
 	  >> temp.sed
-	$(Verb) $(ECHO) 's/@LLVM_OBJ_SUFFIX@/$(subst /,\/,/$(BuildMode))/' \
+	$(Verb) $(ECHO) 's/@LLVM_SYSTEM_LIBS@/$(subst /,\/,$(LIBS))/' \
 	  >> temp.sed
 	$(Verb) $(SED) -f temp.sed < $< > $@
 	$(Verb) $(RM) temp.sed
-	$(Verb) cat $(FinalLibDeps) >> $@
-	$(Verb) chmod +x $@
-
-else
-# We don't have perl, just generate a dummy llvm-config
-$(ToolDir)/llvm-config:
-	$(Echo) "Building place holder llvm-config script."
-	$(Verb) $(ECHO) 'echo llvm-config: Perl not found so llvm-config could not be generated' >> $@
-	$(Verb) chmod +x $@
-
-endif
-# Hook into the standard Makefile rules.
-all-local:: $(ToolDir)/llvm-config
-clean-local::
-	$(Verb) $(RM) -f $(ToolDir)/llvm-config llvm-config.in $(FinalLibDeps) \
-	  $(LibDeps) GenLibDeps.out
-install-local:: all-local
-	$(Echo) Installing llvm-config
-	$(Verb) $(MKDIR) $(DESTDIR)$(PROJ_bindir)
-	$(Verb) $(ScriptInstall) $(ToolDir)/llvm-config $(DESTDIR)$(PROJ_bindir)
-
diff --git a/tools/llvm-config/find-cycles.pl b/tools/llvm-config/find-cycles.pl
deleted file mode 100755
index 5cbf5b4b277..00000000000
--- a/tools/llvm-config/find-cycles.pl
+++ /dev/null
@@ -1,170 +0,0 @@
-#!/usr/bin/perl
-#
-# Program:  find-cycles.pl
-#
-# Synopsis: Given a list of possibly cyclic dependencies, merge all the
-#           cycles.  This makes it possible to topologically sort the
-#           dependencies between different parts of LLVM.
-#
-# Syntax:   find-cycles.pl < LibDeps.txt > FinalLibDeps.txt
-#
-# Input:    cycmem1: cycmem2 dep1 dep2
-#           cycmem2: cycmem1 dep3 dep4
-#           boring: dep4
-#
-# Output:   cycmem1 cycmem2: dep1 dep2 dep3 dep4
-#           boring: dep4
-#
-# This file was written by Eric Kidd, and is placed into the public domain.
-#
-
-use 5.006;
-use strict;
-use warnings;
-
-my %DEPS;
-my @CYCLES;
-sub find_all_cycles;
-
-# Read our dependency information.
-while (<>) {
-    chomp;
-    my ($module, $dependency_str) = /^\s*([^:]+):\s*(.*)\s*$/;
-    die "Malformed data: $_" unless defined $dependency_str;
-    my @dependencies = split(/ /, $dependency_str);
-    $DEPS{$module} = \@dependencies;
-}
-
-# Partition our raw dependencies into sets of cyclically-connected nodes.
-find_all_cycles();
-
-# Print out the finished cycles, with their dependencies.
-my @output;
-my $cycles_found = 0;
-foreach my $cycle (@CYCLES) {
-    my @modules = sort keys %{$cycle};
-
-    # Merge the dependencies of all modules in this cycle.
-    my %dependencies;
-    foreach my $module (@modules) {
-        @dependencies{@{$DEPS{$module}}} = 1;
-    }
-
-    # Prune the known cyclic dependencies.
-    foreach my $module (@modules) {
-        delete $dependencies{$module};
-    }
-
-    # Warn about possible linker problems.
-    my @archives = grep(/\.a$/, @modules);
-    if (@archives > 1) {
-        $cycles_found = $cycles_found + 1;
-        print STDERR "find-cycles.pl: Circular dependency between *.a files:\n";
-        print STDERR "find-cycles.pl:   ", join(' ', @archives), "\n";
-        push @modules, @archives; # WORKAROUND: Duplicate *.a files. Ick.
-    } elsif (@modules > 1) {
-        $cycles_found = $cycles_found + 1;
-        print STDERR "find-cycles.pl: Circular dependency between *.o files:\n";
-        print STDERR "find-cycles.pl:   ", join(' ', @modules), "\n";
-        push @modules, @modules; # WORKAROUND: Duplicate *.o files. Ick.
-    }
-
-    # Add to our output.  (@modules is already as sorted as we need it to be.)
-    push @output, (join(' ', @modules) . ': ' .
-                   join(' ', sort keys %dependencies) . "\n");
-}
-print sort @output;
-
-exit $cycles_found;
-
-#==========================================================================
-#  Depedency Cycle Support
-#==========================================================================
-#  For now, we have cycles in our dependency graph.  Ideally, each cycle
-#  would be collapsed down to a single *.a file, saving us all this work.
-#
-#  To understand this code, you'll need a working knowledge of Perl 5,
-#  and possibly some quality time with 'man perlref'.
-
-my %SEEN;
-my %CYCLES;
-sub find_cycles ($@);
-sub found_cycles ($@);
-
-sub find_all_cycles {
-    # Find all multi-item cycles.
-    my @modules = sort keys %DEPS;
-    foreach my $module (@modules) { find_cycles($module); }
-
-    # Build fake one-item "cycles" for the remaining modules, so we can
-    # treat them uniformly.
-    foreach my $module (@modules) {
-        unless (defined $CYCLES{$module}) {
-            my %cycle = ($module, 1);
-            $CYCLES{$module} = \%cycle;
-        }
-    }
-
-    # Find all our unique cycles.  We have to do this the hard way because
-    # we apparently can't store hash references as hash keys without making
-    # 'strict refs' sad.
-    my %seen;
-    foreach my $cycle (values %CYCLES) {
-        unless ($seen{$cycle}) {
-            $seen{$cycle} = 1;
-            push @CYCLES, $cycle;
-        }
-    }
-}
-
-# Walk through our graph depth-first (keeping a trail in @path), and report
-# any cycles we find.
-sub find_cycles ($@) {
-    my ($module, @path) = @_;
-    if (str_in_list($module, @path)) {
-        found_cycle($module, @path);
-    } else {
-        return if defined $SEEN{$module};
-        $SEEN{$module} = 1;
-        foreach my $dep (@{$DEPS{$module}}) {
-            find_cycles($dep, @path, $module);
-        }
-    }
-}
-
-# Give a cycle, attempt to merge it with pre-existing cycle data.
-sub found_cycle ($@) {
-    my ($module, @path) = @_;
-
-    # Pop any modules which aren't part of our cycle.
-    while ($path[0] ne $module) { shift @path; }
-    #print join("->", @path, $module) . "\n";
-
-    # Collect the modules in our cycle into a hash.
-    my %cycle;
-    foreach my $item (@path) {
-        $cycle{$item} = 1;
-        if (defined $CYCLES{$item}) {
-            # Looks like we intersect with an existing cycle, so merge
-            # all those in, too.
-            foreach my $old_item (keys %{$CYCLES{$item}}) {
-                $cycle{$old_item} = 1;
-            }
-        }
-    }
-
-    # Update our global cycle table.
-    my $cycle_ref = \%cycle;
-    foreach my $item (keys %cycle) {
-        $CYCLES{$item} = $cycle_ref;
-    }
-    #print join(":", sort keys %cycle) . "\n";
-}
-
-sub str_in_list ($@) {
-    my ($str, @list) = @_;
-    foreach my $item (@list) {
-        return 1 if ($item eq $str);
-    }
-    return 0;
-}
diff --git a/tools/llvm-config-2/llvm-config.cpp b/tools/llvm-config/llvm-config.cpp
index 30ace56f4ca..30ace56f4ca 100644
--- a/tools/llvm-config-2/llvm-config.cpp
+++ b/tools/llvm-config/llvm-config.cpp
diff --git a/tools/llvm-config/llvm-config.in.in b/tools/llvm-config/llvm-config.in.in
deleted file mode 100644
index d811e59abb5..00000000000
--- a/tools/llvm-config/llvm-config.in.in
+++ /dev/null
@@ -1,466 +0,0 @@
-#!@PERL@
-##===- tools/llvm-config ---------------------------------------*- perl -*-===##
-# 
-#                     The LLVM Compiler Infrastructure
-#
-# This file is distributed under the University of Illinois Open Source
-# License. See LICENSE.TXT for details.
-# 
-##===----------------------------------------------------------------------===##
-#
-# Synopsis: Prints out compiler options needed to build against an installed
-#           copy of LLVM.
-#
-# Syntax:   llvm-config OPTIONS... [COMPONENTS...]
-# 
-##===----------------------------------------------------------------------===##
-
-use 5.006;
-use strict;
-use warnings;
-use Cwd 'abs_path';
-
-#---- begin autoconf values ----
-my $PACKAGE_NAME        = q{@PACKAGE_NAME@};
-my $VERSION             = q{@PACKAGE_VERSION@};
-my $PREFIX              = q{@LLVM_PREFIX@};
-my $LLVM_CONFIGTIME     = q{@LLVM_CONFIGTIME@};
-my $LLVM_SRC_ROOT       = q{@abs_top_srcdir@};
-my $LLVM_OBJ_ROOT       = q{@abs_top_builddir@};
-my $ARCH                = lc(q{@ARCH@});
-my $TARGET_TRIPLE       = q{@target@};
-my $TARGETS_TO_BUILD    = q{@TARGETS_TO_BUILD@};
-my $TARGET_HAS_JIT      = q{@TARGET_HAS_JIT@};
-my @TARGETS_BUILT       = map { lc($_) } qw{@TARGETS_TO_BUILD@};
-#---- end autoconf values ----
-
-# Must pretend x86_64 architecture is really x86, otherwise the native backend
-# won't get linked in.
-$ARCH = "x86" if $ARCH eq "x86_64";
-
-#---- begin Makefile values ----
-my $CPPFLAGS            = q{@LLVM_CPPFLAGS@};
-my $CFLAGS              = q{@LLVM_CFLAGS@};
-my $CXXFLAGS            = q{@LLVM_CXXFLAGS@};
-my $LDFLAGS             = q{@LLVM_LDFLAGS@};
-my $SYSTEM_LIBS         = q{@LIBS@};
-my $LLVM_BUILDMODE      = q{@LLVM_BUILDMODE@};
-my $LLVM_OBJ_SUFFIX     = q{@LLVM_OBJ_SUFFIX@};
-#---- end Makefile values ----
-
-# Figure out where llvm-config is being run from.  Primarily, we care if it has
-# been installed, or is running from the build directory, which changes the
-# locations of some files.
-
-# Convert the current executable name into its directory (e.g. ".").
-my ($RUN_DIR) = ($0 =~ /^(.*)\/.*$/);
-
-# Turn the directory into an absolute directory on the file system, also pop up
-# from "bin" into the build or prefix dir.
-my $ABS_RUN_DIR = abs_path("$RUN_DIR/..");
-chomp($ABS_RUN_DIR);
-
-# Compute the absolute object directory build, e.g. "foo/llvm/Debug".
-my $ABS_OBJ_ROOT = "$LLVM_OBJ_ROOT$LLVM_OBJ_SUFFIX";
-$ABS_OBJ_ROOT = abs_path("$ABS_OBJ_ROOT") if (-d $ABS_OBJ_ROOT);
-chomp($ABS_OBJ_ROOT);
-
-my $INCLUDEDIR = "$ABS_RUN_DIR/include";
-my $INCLUDEOPTION = "-I$INCLUDEDIR";
-my $LIBDIR     = "$ABS_RUN_DIR/lib";
-my $BINDIR     = "$ABS_RUN_DIR/bin";
-if ($ABS_RUN_DIR eq $ABS_OBJ_ROOT) {
-  # If we are running out of the build directory, the include dir is in the
-  # srcdir.
-  $INCLUDEDIR = "$LLVM_SRC_ROOT/include";
-  # We need include files from both the srcdir and objdir.
-  $INCLUDEOPTION = "-I$INCLUDEDIR -I$LLVM_OBJ_ROOT/include"
-} else {
-  # If installed, ignore the prefix the tree was configured with, use the
-  # current prefix.
-  $PREFIX = $ABS_RUN_DIR;
-}
-
-sub usage;
-sub fix_library_names (@);
-sub fix_library_files (@);
-sub expand_dependencies (@);
-sub name_map_entries;
-
-# Parse our command-line arguments.
-usage if @ARGV == 0;
-my @components;
-my $has_opt = 0;
-my $want_libs = 0;
-my $want_libnames = 0;
-my $want_libfiles = 0;
-my $want_components = 0;
-foreach my $arg (@ARGV) {
-    if ($arg =~ /^-/) {
-        if ($arg eq "--version") {
-            $has_opt = 1; print "$VERSION\n";
-        } elsif ($arg eq "--prefix") {
-            $has_opt = 1; print "$PREFIX\n";
-        } elsif ($arg eq "--bindir") {
-            $has_opt = 1; print "$BINDIR\n";
-        } elsif ($arg eq "--includedir") {
-            $has_opt = 1; print "$INCLUDEDIR\n";
-        } elsif ($arg eq "--libdir") {
-            $has_opt = 1; print "$LIBDIR\n";
-        } elsif ($arg eq "--cppflags") {
-            $has_opt = 1; print "$INCLUDEOPTION $CPPFLAGS\n";
-        } elsif ($arg eq "--cflags") {
-            $has_opt = 1; print "$INCLUDEOPTION $CFLAGS\n";
-        } elsif ($arg eq "--cxxflags") {
-            $has_opt = 1; print "$INCLUDEOPTION $CXXFLAGS\n";
-        } elsif ($arg eq "--ldflags") {
-            $has_opt = 1; print "-L$LIBDIR $LDFLAGS $SYSTEM_LIBS\n";
-        } elsif ($arg eq "--libs") {
-            $has_opt = 1; $want_libs = 1;
-        } elsif ($arg eq "--libnames") {
-            $has_opt = 1; $want_libnames = 1;
-        } elsif ($arg eq "--libfiles") {
-            $has_opt = 1; $want_libfiles = 1;
-        } elsif ($arg eq "--components") {
-            $has_opt = 1; print join(' ', name_map_entries), "\n";
-        } elsif ($arg eq "--targets-built") {
-            $has_opt = 1; print join(' ', @TARGETS_BUILT), "\n";
-        } elsif ($arg eq "--host-target") {
-            $has_opt = 1; print "$TARGET_TRIPLE\n";
-        } elsif ($arg eq "--build-mode") {
-            $has_opt = 1; print "$LLVM_BUILDMODE\n";
-        } elsif ($arg eq "--obj-root") {
-            $has_opt = 1; print abs_path("$LLVM_OBJ_ROOT/");
-        } elsif ($arg eq "--src-root") {
-            $has_opt = 1; print abs_path("$LLVM_SRC_ROOT/");
-        } else {
-            usage();
-        }
-    } else {
-        push @components, $arg;
-    }
-}
-
-# If no options were specified, fail.
-usage unless $has_opt;
-
-# If no components were specified, default to 'all'.
-if (@components == 0) {
-    push @components, 'all';
-}
-
-# Force component names to lower case.
-@components = map lc, @components;
-
-# Handle any arguments which require building our dependency graph.
-if ($want_libs || $want_libnames || $want_libfiles) {
-    my @libs = expand_dependencies(@components);
-    print join(' ', fix_library_names(@libs)), "\n" if ($want_libs);
-    print join(' ',  @libs), "\n" if ($want_libnames);
-    print join(' ', fix_library_files(@libs)), "\n" if ($want_libfiles);
-}
-
-exit 0;
-
-#==========================================================================
-#  Support Routines
-#==========================================================================
-
-sub usage {
-    print STDERR <<__EOD__;
-Usage: llvm-config <OPTION>... [<COMPONENT>...]
-
-Get various configuration information needed to compile programs which use
-LLVM.  Typically called from 'configure' scripts.  Examples:
-  llvm-config --cxxflags
-  llvm-config --ldflags
-  llvm-config --libs engine bcreader scalaropts
-
-Options:
-  --version          Print LLVM version.
-  --prefix           Print the installation prefix.
-  --src-root         Print the source root LLVM was built from.
-  --obj-root         Print the object root used to build LLVM.
-  --bindir           Directory containing LLVM executables.
-  --includedir       Directory containing LLVM headers.
-  --libdir           Directory containing LLVM libraries.
-  --cppflags         C preprocessor flags for files that include LLVM headers.
-  --cflags           C compiler flags for files that include LLVM headers.
-  --cxxflags         C++ compiler flags for files that include LLVM headers.
-  --ldflags          Print Linker flags.
-  --libs             Libraries needed to link against LLVM components.
-  --libnames         Bare library names for in-tree builds.
-  --libfiles         Fully qualified library filenames for makefile depends.
-  --components       List of all possible components.
-  --targets-built    List of all targets currently built.
-  --host-target      Target triple used to configure LLVM.
-  --build-mode       Print build mode of LLVM tree (e.g. Debug or Release).
-Typical components:
-  all                All LLVM libraries (default).
-  engine             Either a native JIT or a bitcode interpreter.
-__EOD__
-    exit(1);
-}
-
-# Use -lfoo instead of libfoo.a whenever possible, and add directories to
-# files which can't be found using -L.
-sub fix_library_names (@) {
-    my @libs = @_;
-    my @result;
-    foreach my $lib (@libs) {
-        # Transform the bare library name appropriately.
-        my ($basename) = ($lib =~ /^lib([^.]*)\.a/);
-        if (defined $basename) {
-            push @result, "-l$basename";
-        } else {
-            push @result, "$LIBDIR/$lib";
-        }
-    }
-    return @result;
-}
-
-# Turn the list of libraries into a list of files.
-sub fix_library_files(@) {
-    my @libs = @_;
-    my @result;
-    foreach my $lib (@libs) {
-        # Transform the bare library name into a filename.
-        push @result, "$LIBDIR/$lib";
-    }
-    return @result;
-}
-
-#==========================================================================
-#  Library Dependency Analysis
-#==========================================================================
-#  Given a few human-readable library names, find all their dependencies
-#  and sort them into an order which the linker will like.  If we packed
-#  our libraries into fewer archives, we could make the linker do much
-#  of this work for us.
-#
-#  Libraries have two different types of names in this code: Human-friendly
-#  "component" names entered on the command-line, and the raw file names
-#  we use internally (and ultimately pass to the linker).
-#
-#  To understand this code, you'll need a working knowledge of Perl 5,
-#  and possibly some quality time with 'man perlref'.
-
-sub load_dependencies;
-sub build_name_map;
-sub have_native_backend;
-sub find_best_engine;
-sub expand_names (@);
-sub find_all_required_sets (@);
-sub find_all_required_sets_helper ($$@);
-
-# Each "set" contains one or more libraries which must be included as a
-# group (due to cyclic dependencies).  Sets are represented as a Perl array
-# reference pointing to a list of internal library names.
-my @SETS;
-
-# Various mapping tables.
-my %LIB_TO_SET_MAP; # Maps internal library names to their sets.
-my %SET_DEPS;       # Maps sets to a list of libraries they depend on.
-my %NAME_MAP;       # Maps human-entered names to internal names.
-
-# Have our dependencies been loaded yet?
-my $DEPENDENCIES_LOADED = 0;
-
-# Given a list of human-friendly component names, translate them into a
-# complete set of linker arguments.
-sub expand_dependencies (@) {
-    my @libs = @_;
-    load_dependencies;
-    my @required_sets = find_all_required_sets(expand_names(@libs));
-    my @sorted_sets = topologically_sort_sets(@required_sets);
-
-    # Expand the library sets into libraries.
-    my @result;
-    foreach my $set (@sorted_sets) { push @result, @{$set}; }
-    return @result;
-}
-
-# Load in the raw dependency data stored at the end of this file.
-sub load_dependencies {
-    return if $DEPENDENCIES_LOADED;
-    $DEPENDENCIES_LOADED = 1;
-    while (<DATA>) {
-        # Parse our line.
-        my ($libs, $deps) = /^\s*([^:]+):\s*(.*)\s*$/;
-        die "Malformed dependency data" unless defined $deps;
-        my @libs = split(' ', $libs);
-        my @deps = split(' ', $deps);
-
-        # Record our dependency data.
-        my $set = \@libs;
-        push @SETS, $set;
-        foreach my $lib (@libs) { $LIB_TO_SET_MAP{$lib} = $set; }
-        $SET_DEPS{$set} = \@deps;
-    }
-    build_name_map;
-}
-
-# Build a map converting human-friendly component names into internal
-# library names.
-sub build_name_map {
-    # Add entries for all the actual libraries.
-    foreach my $set (@SETS) {
-        foreach my $lib (sort @$set) {
-            my $short_name = $lib;
-            $short_name =~ s/^(lib)?LLVM([^.]*)\..*$/$2/;
-            $short_name =~ tr/A-Z/a-z/;
-            $NAME_MAP{$short_name} = [$lib];
-        }
-    }
-
-    # Add target-specific entries
-    my @all_targets;
-    foreach my $target (@TARGETS_BUILT) {
-        # FIXME: Temporary, until we don't switch all targets
-        if (defined $NAME_MAP{$target.'asmprinter'}) {
-            $NAME_MAP{$target} = [$target.'info',
-                                  $target.'asmprinter', 
-                                  $target.'codegen']
-        } elsif (defined $NAME_MAP{$target.'codegen'}) {
-            $NAME_MAP{$target} = [$target.'info',
-                                  $target.'codegen']
-        } else {
-            $NAME_MAP{$target} = [$target.'info',
-                                  $NAME_MAP{$target}[0]]
-        }
-
-        if (defined $NAME_MAP{$target.'asmparser'}) {
-            push @{$NAME_MAP{$target}},$target.'asmparser'
-        }
-
-        if (defined $NAME_MAP{$target.'disassembler'}) {
-            push @{$NAME_MAP{$target}},$target.'disassembler'
-        }
-
-        push @all_targets, $target;
-    }
-
-    # Add virtual entries.
-    $NAME_MAP{'native'}  = have_native_backend() ? [$ARCH] : [];
-    $NAME_MAP{'nativecodegen'} = have_native_backend() ? [$ARCH.'codegen'] : [];
-    $NAME_MAP{'engine'}  = find_best_engine;
-    $NAME_MAP{'all-targets'}     = \@all_targets;
-    $NAME_MAP{'all'}     = [name_map_entries];   # Must be last.
-}
-
-# Return true if we have a native backend to use.
-sub have_native_backend {
-    my %BUILT;
-    foreach my $target (@TARGETS_BUILT) { $BUILT{$target} = 1; }
-    return defined $NAME_MAP{$ARCH} && defined $BUILT{$ARCH};
-}
-
-# Find a working subclass of ExecutionEngine for this platform.
-sub find_best_engine {
-    if (have_native_backend && $TARGET_HAS_JIT) {
-        return ['jit', 'native'];
-    } else {
-        return ['interpreter'];
-    }
-}
-
-# Get all the human-friendly component names.
-sub name_map_entries {
-    load_dependencies;
-    return sort keys %NAME_MAP;
-}
-
-# Map human-readable names to internal library names.
-sub expand_names (@) {
-    my @names = @_;
-    my @result;
-    foreach my $name (@names) {
-        if (defined $LIB_TO_SET_MAP{$name}) {
-            # We've hit bottom: An actual library name.
-            push @result, $name;
-        } elsif (defined $NAME_MAP{$name}) {
-            # We've found a short name to expand.
-            push @result, expand_names(@{$NAME_MAP{$name}});
-        } else {
-            print STDERR "llvm-config: unknown component name: $name\n";
-            exit(1);
-        }
-    }
-    return @result;
-}
-
-# Given a list of internal library names, return all sets of libraries which
-# will need to be included by the linker (in no particular order).
-sub find_all_required_sets (@) {
-    my @libs = @_;
-    my %sets_added;
-    my @result;
-    find_all_required_sets_helper(\%sets_added, \@result, @libs);
-    return @result;
-}
-
-# Recursive closures are pretty broken in Perl, so we're going to separate
-# this function from find_all_required_sets and pass in the state we need
-# manually, as references.  Yes, this is fairly unpleasant.
-sub find_all_required_sets_helper ($$@) {
-    my ($sets_added, $result, @libs) = @_;
-    foreach my $lib (@libs) {
-        my $set = $LIB_TO_SET_MAP{$lib};
-        next if defined $$sets_added{$set};
-        $$sets_added{$set} = 1;
-        push @$result, $set;
-        find_all_required_sets_helper($sets_added, $result, @{$SET_DEPS{$set}});
-    }
-}
-
-# Print a list of sets, with a label.  Used for debugging.
-sub print_sets ($@) {
-    my ($label, @sets) = @_;
-    my @output;
-    foreach my $set (@sets) { push @output, join(',', @$set); }
-    print "$label: ", join(';', @output), "\n";
-}
-
-# Returns true if $lib is a key in $added.
-sub has_lib_been_added ($$) {
-    my ($added, $lib) = @_;
-    return defined $$added{$LIB_TO_SET_MAP{$lib}};
-}
-
-# Returns true if all the dependencies of $set appear in $added.
-sub have_all_deps_been_added ($$) {
-    my ($added, $set) = @_;
-    #print_sets("  Checking", $set);
-    #print_sets("     Wants", $SET_DEPS{$set});
-    foreach my $lib (@{$SET_DEPS{$set}}) {
-        return 0 unless has_lib_been_added($added, $lib);
-    }
-    return 1;
-}
-
-# Given a list of sets, topologically sort them using dependencies.
-sub topologically_sort_sets (@) {
-    my @sets = @_;
-    my %added;
-    my @result;
-    SCAN: while (@sets) { # We'll delete items from @sets as we go.
-        #print_sets("So far", reverse(@result));
-        #print_sets("Remaining", @sets);
-        for (my $i = 0; $i < @sets; ++$i) {
-            my $set = $sets[$i];
-            if (have_all_deps_been_added(\%added, $set)) {
-                push @result, $set;
-                $added{$set} = 1;
-                #print "Removing $i.\n";
-                splice(@sets, $i, 1);
-                next SCAN; # Restart our scan.
-            }
-        }
-        die "Can't find a library with no dependencies";
-    }
-    return reverse(@result);
-}
-
-# Our library dependency data will be added after the '__END__' token, and will
-# be read through the magic <DATA> filehandle.
-__END__