diff options
Diffstat (limited to 'tools/llvm-config')
| -rw-r--r-- | tools/llvm-config/BuildVariables.inc.in | 26 | ||||
| -rw-r--r-- | tools/llvm-config/CMakeLists.txt | 151 | ||||
| -rw-r--r-- | tools/llvm-config/Makefile | 92 | ||||
| -rwxr-xr-x | tools/llvm-config/find-cycles.pl | 170 | ||||
| -rw-r--r-- | tools/llvm-config/llvm-config.cpp | 324 | ||||
| -rw-r--r-- | tools/llvm-config/llvm-config.in.in | 466 |
6 files changed, 405 insertions, 824 deletions
diff --git a/tools/llvm-config/BuildVariables.inc.in b/tools/llvm-config/BuildVariables.inc.in new file mode 100644 index 0000000000..5969772c9d --- /dev/null +++ b/tools/llvm-config/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@" diff --git a/tools/llvm-config/CMakeLists.txt b/tools/llvm-config/CMakeLists.txt index 53f00846b7..ed26ba9555 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 184919ea97..a7a2a63f99 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 5cbf5b4b27..0000000000 --- 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/llvm-config.cpp b/tools/llvm-config/llvm-config.cpp new file mode 100644 index 0000000000..30ace56f4c --- /dev/null +++ b/tools/llvm-config/llvm-config.cpp @@ -0,0 +1,324 @@ +//===-- 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 deleted file mode 100644 index d811e59abb..0000000000 --- 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__ |