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authorDaniel Dunbar <daniel@zuster.org>2011-11-10 19:59:35 +0000
committerDaniel Dunbar <daniel@zuster.org>2011-11-10 19:59:35 +0000
commit1ad92131abbed3d2992d5996969274a8e1ae9a6b (patch)
tree773ce7f5c949f85879d65bb5f26620ba6e9ed587 /tools/llvm-config
parent0ad62be9aa54c4e4670af758c37c2d0673bc67e4 (diff)
Revert r144300 "llvm-config: Replace with C++ version (was llvm-config-2).",
which didn't appear ready for prime time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144309 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-config')
-rw-r--r--tools/llvm-config/BuildVariables.inc.in26
-rw-r--r--tools/llvm-config/CMakeLists.txt151
-rw-r--r--tools/llvm-config/Makefile92
-rwxr-xr-xtools/llvm-config/find-cycles.pl170
-rw-r--r--tools/llvm-config/llvm-config.cpp324
-rw-r--r--tools/llvm-config/llvm-config.in.in466
6 files changed, 824 insertions, 405 deletions
diff --git a/tools/llvm-config/BuildVariables.inc.in b/tools/llvm-config/BuildVariables.inc.in
deleted file mode 100644
index 5969772c9dc..00000000000
--- a/tools/llvm-config/BuildVariables.inc.in
+++ /dev/null
@@ -1,26 +0,0 @@
-//===-- 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@"
diff --git a/tools/llvm-config/CMakeLists.txt b/tools/llvm-config/CMakeLists.txt
index ed26ba95553..53f00846b79 100644
--- a/tools/llvm-config/CMakeLists.txt
+++ b/tools/llvm-config/CMakeLists.txt
@@ -1,41 +1,138 @@
-set(LLVM_LINK_COMPONENTS support)
+include(TestBigEndian)
-# 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)
+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}")
-# 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}")
+ set(LLVM_SYSTEM_LIBS ${LLVM_SYSTEM_LIBS} "-l${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}")
-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}! >> ${SEDSCRIPT_OBJPATH}
+# We don't want certain flags on the output of
+# llvm-config --cflags --cxxflags
+macro(remove_option_from_llvm_config option)
+ llvm_replace_compiler_option(C_FLGS "${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
# 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} > ${BUILDVARIABLES_OBJPATH}
+ COMMAND echo s!@LLVM_LDFLAGS@!${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}
VERBATIM
- COMMENT "Building BuildVariables.inc include."
+ DEPENDS ${FINAL_LIBDEPS} ${LLVM_CONFIG_IN}
+ COMMENT "Building llvm-config script."
)
-# Add the llvm-config tool.
-add_llvm_tool(llvm-config
- llvm-config.cpp
- )
+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 ${llvm_libs})
-# Add the dependency on the generation step.
-add_file_dependencies(${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.cpp ${BUILDVARIABLES_OBJPATH})
+install(FILES ${LLVM_CONFIG}
+ PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE
+ WORLD_READ WORLD_EXECUTE
+ DESTINATION bin)
diff --git a/tools/llvm-config/Makefile b/tools/llvm-config/Makefile
index a7a2a63f99b..184919ea971 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
@@ -7,42 +7,57 @@
#
##===----------------------------------------------------------------------===##
-LEVEL := ../..
-TOOLNAME := llvm-config
-USEDLIBS := LLVMSupport.a
-
-# We generate sources in the build directory, make sure it is in the include
-# paths.
-INCLUDE_BUILD_DIR := 1
+LEVEL = ../..
-# 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)
+EXTRA_DIST = LibDeps.txt FinalLibDeps.txt llvm-config.in.in find-cycles.pl
include $(LEVEL)/Makefile.common
+# If we don't have Perl, we can't generate the library dependencies upon which
+# llvm-config depends. Therefore, only if we detect perl will we do anything
+# useful.
+ifeq ($(HAVE_PERL),1)
+
# 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} ${CXX.Flags}
# This is blank for now. We need to be careful about adding stuff here:
# LDFLAGS tend not to be portable, and we don't currently require the
# user to use libtool when linking against LLVM.
-SUB_LDFLAGS :=
+SUB_LDFLAGS =
-$(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
+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 $@
+
+# 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))/' \
- >> temp.sed
+ > temp.sed
$(Verb) $(ECHO) 's/@LLVM_CFLAGS@/$(subst /,\/,$(SUB_CFLAGS))/' \
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_CXXFLAGS@/$(subst /,\/,$(SUB_CXXFLAGS))/' \
@@ -51,7 +66,28 @@ $(ObjDir)/BuildVariables.inc: $(BUILDVARIABLES_SRCPATH) Makefile $(ObjDir)/.dir
>> temp.sed
$(Verb) $(ECHO) 's/@LLVM_BUILDMODE@/$(subst /,\/,$(BuildMode))/' \
>> temp.sed
- $(Verb) $(ECHO) 's/@LLVM_SYSTEM_LIBS@/$(subst /,\/,$(LIBS))/' \
+ $(Verb) $(ECHO) 's/@LLVM_OBJ_SUFFIX@/$(subst /,\/,/$(BuildMode))/' \
>> 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
new file mode 100755
index 00000000000..5cbf5b4b277
--- /dev/null
+++ b/tools/llvm-config/find-cycles.pl
@@ -0,0 +1,170 @@
+#!/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/llvm-config.cpp b/tools/llvm-config/llvm-config.cpp
deleted file mode 100644
index 30ace56f4ca..00000000000
--- a/tools/llvm-config/llvm-config.cpp
+++ /dev/null
@@ -1,324 +0,0 @@
-//===-- llvm-config.cpp - LLVM project configuration utility --------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This tool encapsulates information about an LLVM project configuration for
-// use by other project's build environments (to determine installed path,
-// available features, required libraries, etc.).
-//
-// Note that although this tool *may* be used by some parts of LLVM's build
-// itself (i.e., the Makefiles use it to compute required libraries when linking
-// tools), this tool is primarily designed to support external projects.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Config/config.h"
-#include "llvm/Config/llvm-config.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/raw_ostream.h"
-#include <cstdlib>
-#include <set>
-#include <vector>
-
-using namespace llvm;
-
-// Include the build time variables we can report to the user. This is generated
-// at build time from the BuildVariables.inc.in file by the build system.
-#include "BuildVariables.inc"
-
-// Include the component table. This creates an array of struct
-// AvailableComponent entries, which record the component name, library name,
-// and required components for all of the available libraries.
-//
-// Not all components define a library, we also use "library groups" as a way to
-// create entries for pseudo groups like x86 or all-targets.
-#include "LibraryDependencies.inc"
-
-/// \brief Traverse a single component adding to the topological ordering in
-/// \arg RequiredLibs.
-///
-/// \param Name - The component to traverse.
-/// \param ComponentMap - A prebuilt map of component names to descriptors.
-/// \param VisitedComponents [in] [out] - The set of already visited components.
-/// \param RequiredLibs [out] - The ordered list of required libraries.
-static void VisitComponent(StringRef Name,
- const StringMap<AvailableComponent*> &ComponentMap,
- std::set<AvailableComponent*> &VisitedComponents,
- std::vector<StringRef> &RequiredLibs) {
- // Lookup the component.
- AvailableComponent *AC = ComponentMap.lookup(Name);
- assert(AC && "Invalid component name!");
-
- // Add to the visited table.
- if (!VisitedComponents.insert(AC).second) {
- // We are done if the component has already been visited.
- return;
- }
-
- // Otherwise, visit all the dependencies.
- for (unsigned i = 0; AC->RequiredLibraries[i]; ++i) {
- VisitComponent(AC->RequiredLibraries[i], ComponentMap, VisitedComponents,
- RequiredLibs);
- }
-
- // Add to the required library list.
- if (AC->Library)
- RequiredLibs.push_back(AC->Library);
-}
-
-/// \brief Compute the list of required libraries for a given list of
-/// components, in an order suitable for passing to a linker (that is, libraries
-/// appear prior to their dependencies).
-///
-/// \param Components - The names of the components to find libraries for.
-/// \param RequiredLibs [out] - On return, the ordered list of libraries that
-/// are required to link the given components.
-void ComputeLibsForComponents(const std::vector<StringRef> &Components,
- std::vector<StringRef> &RequiredLibs) {
- std::set<AvailableComponent*> VisitedComponents;
-
- // Build a map of component names to information.
- StringMap<AvailableComponent*> ComponentMap;
- for (unsigned i = 0; i != array_lengthof(AvailableComponents); ++i) {
- AvailableComponent *AC = &AvailableComponents[i];
- ComponentMap[AC->Name] = AC;
- }
-
- // Visit the components.
- for (unsigned i = 0, e = Components.size(); i != e; ++i) {
- // Users are allowed to provide mixed case component names.
- std::string ComponentLower = Components[i].lower();
-
- // Validate that the user supplied a valid component name.
- if (!ComponentMap.count(ComponentLower)) {
- llvm::errs() << "llvm-config: unknown component name: " << Components[i]
- << "\n";
- exit(1);
- }
-
- VisitComponent(ComponentLower, ComponentMap, VisitedComponents,
- RequiredLibs);
- }
-
- // The list is now ordered with leafs first, we want the libraries to printed
- // in the reverse order of dependency.
- std::reverse(RequiredLibs.begin(), RequiredLibs.end());
-}
-
-/* *** */
-
-void usage() {
- errs() << "\
-usage: llvm-config <OPTION>... [<COMPONENT>...]\n\
-\n\
-Get various configuration information needed to compile programs which use\n\
-LLVM. Typically called from 'configure' scripts. Examples:\n\
- llvm-config --cxxflags\n\
- llvm-config --ldflags\n\
- llvm-config --libs engine bcreader scalaropts\n\
-\n\
-Options:\n\
- --version Print LLVM version.\n\
- --prefix Print the installation prefix.\n\
- --src-root Print the source root LLVM was built from.\n\
- --obj-root Print the object root used to build LLVM.\n\
- --bindir Directory containing LLVM executables.\n\
- --includedir Directory containing LLVM headers.\n\
- --libdir Directory containing LLVM libraries.\n\
- --cppflags C preprocessor flags for files that include LLVM headers.\n\
- --cflags C compiler flags for files that include LLVM headers.\n\
- --cxxflags C++ compiler flags for files that include LLVM headers.\n\
- --ldflags Print Linker flags.\n\
- --libs Libraries needed to link against LLVM components.\n\
- --libnames Bare library names for in-tree builds.\n\
- --libfiles Fully qualified library filenames for makefile depends.\n\
- --components List of all possible components.\n\
- --targets-built List of all targets currently built.\n\
- --host-target Target triple used to configure LLVM.\n\
- --build-mode Print build mode of LLVM tree (e.g. Debug or Release).\n\
-Typical components:\n\
- all All LLVM libraries (default).\n\
- backend Either a native backend or the C backend.\n\
- engine Either a native JIT or a bitcode interpreter.\n";
- exit(1);
-}
-
-/// \brief Compute the path to the main executable.
-llvm::sys::Path GetExecutablePath(const char *Argv0) {
- // This just needs to be some symbol in the binary; C++ doesn't
- // allow taking the address of ::main however.
- void *P = (void*) (intptr_t) GetExecutablePath;
- return llvm::sys::Path::GetMainExecutable(Argv0, P);
-}
-
-int main(int argc, char **argv) {
- std::vector<StringRef> Components;
- bool PrintLibs = false, PrintLibNames = false, PrintLibFiles = false;
- bool HasAnyOption = false;
-
- // llvm-config is designed to support being run both from a development tree
- // and from an installed path. We try and auto-detect which case we are in so
- // that we can report the correct information when run from a development
- // tree.
- bool IsInDevelopmentTree, DevelopmentTreeLayoutIsCMakeStyle;
- llvm::SmallString<256> CurrentPath(GetExecutablePath(argv[0]).str());
- std::string CurrentExecPrefix;
-
- // Create an absolute path, and pop up one directory (we expect to be inside a
- // bin dir).
- sys::fs::make_absolute(CurrentPath);
- CurrentExecPrefix = sys::path::parent_path(
- sys::path::parent_path(CurrentPath)).str();
-
- // Check to see if we are inside a development tree by comparing to possible
- // locations (prefix style or CMake style). This could be wrong in the face of
- // symbolic links, but is good enough.
- if (CurrentExecPrefix == std::string(LLVM_OBJ_ROOT) + "/" + LLVM_BUILDMODE) {
- IsInDevelopmentTree = true;
- DevelopmentTreeLayoutIsCMakeStyle = false;
- } else if (CurrentExecPrefix == std::string(LLVM_OBJ_ROOT) + "/bin") {
- IsInDevelopmentTree = true;
- DevelopmentTreeLayoutIsCMakeStyle = true;
- } else {
- IsInDevelopmentTree = false;
- }
-
- // Compute various directory locations based on the derived location
- // information.
- std::string ActivePrefix, ActiveBinDir, ActiveIncludeDir, ActiveLibDir;
- std::string ActiveIncludeOption;
- if (IsInDevelopmentTree) {
- ActivePrefix = CurrentExecPrefix;
-
- // CMake organizes the products differently than a normal prefix style
- // layout.
- if (DevelopmentTreeLayoutIsCMakeStyle) {
- ActiveIncludeDir = std::string(LLVM_OBJ_ROOT) + "/include";
- ActiveBinDir = std::string(LLVM_OBJ_ROOT) + "/bin/" + LLVM_BUILDMODE;
- ActiveLibDir = std::string(LLVM_OBJ_ROOT) + "/lib/" + LLVM_BUILDMODE;
- } else {
- ActiveIncludeDir = std::string(LLVM_OBJ_ROOT) + "/include";
- ActiveBinDir = std::string(LLVM_OBJ_ROOT) + "/" + LLVM_BUILDMODE + "/bin";
- ActiveLibDir = std::string(LLVM_OBJ_ROOT) + "/" + LLVM_BUILDMODE + "/lib";
- }
-
- // We need to include files from both the source and object trees.
- ActiveIncludeOption = ("-I" + ActiveIncludeDir + " " +
- "-I" + LLVM_OBJ_ROOT + "/include");
- } else {
- ActivePrefix = CurrentExecPrefix;
- ActiveIncludeDir = ActivePrefix + "/include";
- ActiveBinDir = ActivePrefix + "/bin";
- ActiveLibDir = ActivePrefix + "/lib";
- ActiveIncludeOption = "-I" + ActiveIncludeDir;
- }
-
- raw_ostream &OS = outs();
- for (int i = 1; i != argc; ++i) {
- StringRef Arg = argv[i];
-
- if (Arg.startswith("-")) {
- HasAnyOption = true;
- if (Arg == "--version") {
- OS << PACKAGE_VERSION << '\n';
- } else if (Arg == "--prefix") {
- OS << ActivePrefix << '\n';
- } else if (Arg == "--bindir") {
- OS << ActiveBinDir << '\n';
- } else if (Arg == "--includedir") {
- OS << ActiveIncludeDir << '\n';
- } else if (Arg == "--libdir") {
- OS << ActiveLibDir << '\n';
- } else if (Arg == "--cppflags") {
- OS << ActiveIncludeOption << ' ' << LLVM_CPPFLAGS << '\n';
- } else if (Arg == "--cflags") {
- OS << ActiveIncludeOption << ' ' << LLVM_CFLAGS << '\n';
- } else if (Arg == "--cxxflags") {
- OS << ActiveIncludeOption << ' ' << LLVM_CXXFLAGS << '\n';
- } else if (Arg == "--ldflags") {
- OS << "-L" << ActiveLibDir << ' ' << LLVM_LDFLAGS
- << ' ' << LLVM_SYSTEM_LIBS << '\n';
- } else if (Arg == "--libs") {
- PrintLibs = true;
- } else if (Arg == "--libnames") {
- PrintLibNames = true;
- } else if (Arg == "--libfiles") {
- PrintLibFiles = true;
- } else if (Arg == "--components") {
- for (unsigned j = 0; j != array_lengthof(AvailableComponents); ++j) {
- OS << ' ';
- OS << AvailableComponents[j].Name;
- }
- OS << '\n';
- } else if (Arg == "--targets-built") {
- bool First = true;
- for (TargetRegistry::iterator I = TargetRegistry::begin(),
- E = TargetRegistry::end(); I != E; First = false, ++I) {
- if (!First)
- OS << ' ';
- OS << I->getName();
- }
- OS << '\n';
- } else if (Arg == "--host-target") {
- OS << LLVM_DEFAULT_TARGET_TRIPLE << '\n';
- } else if (Arg == "--build-mode") {
- OS << LLVM_BUILDMODE << '\n';
- } else if (Arg == "--obj-root") {
- OS << LLVM_OBJ_ROOT << '\n';
- } else if (Arg == "--src-root") {
- OS << LLVM_SRC_ROOT << '\n';
- } else {
- usage();
- }
- } else {
- Components.push_back(Arg);
- }
- }
-
- if (!HasAnyOption)
- usage();
-
- if (PrintLibs || PrintLibNames || PrintLibFiles) {
- // Construct the list of all the required libraries.
- std::vector<StringRef> RequiredLibs;
- ComputeLibsForComponents(Components, RequiredLibs);
-
- for (unsigned i = 0, e = RequiredLibs.size(); i != e; ++i) {
- StringRef Lib = RequiredLibs[i];
- if (i)
- OS << ' ';
-
- if (PrintLibNames) {
- OS << Lib;
- } else if (PrintLibFiles) {
- OS << ActiveLibDir << '/' << Lib;
- } else if (PrintLibs) {
- // If this is a typical library name, include it using -l.
- if (Lib.startswith("lib") && Lib.endswith(".a")) {
- OS << "-l" << Lib.slice(3, Lib.size()-2);
- continue;
- }
-
- // Otherwise, print the full path.
- OS << ActiveLibDir << '/' << Lib;
- }
- }
- OS << '\n';
- } else if (!Components.empty()) {
- errs() << "llvm-config: error: components given, but unused\n\n";
- usage();
- }
-
- return 0;
-}
diff --git a/tools/llvm-config/llvm-config.in.in b/tools/llvm-config/llvm-config.in.in
new file mode 100644
index 00000000000..d811e59abb5
--- /dev/null
+++ b/tools/llvm-config/llvm-config.in.in
@@ -0,0 +1,466 @@
+#!@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__