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742 lines
28 KiB
742 lines
28 KiB
//===-- llvm-config.cpp - LLVM project configuration utility --------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This tool encapsulates information about an LLVM project configuration for
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// use by other project's build environments (to determine installed path,
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// available features, required libraries, etc.).
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//
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// Note that although this tool *may* be used by some parts of LLVM's build
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// itself (i.e., the Makefiles use it to compute required libraries when linking
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// tools), this tool is primarily designed to support external projects.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Config/llvm-config.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/StringMap.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Config/config.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/WithColor.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdlib>
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#include <set>
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#include <unordered_set>
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#include <vector>
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using namespace llvm;
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// Include the build time variables we can report to the user. This is generated
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// at build time from the BuildVariables.inc.in file by the build system.
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#include "BuildVariables.inc"
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// Include the component table. This creates an array of struct
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// AvailableComponent entries, which record the component name, library name,
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// and required components for all of the available libraries.
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//
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// Not all components define a library, we also use "library groups" as a way to
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// create entries for pseudo groups like x86 or all-targets.
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#include "LibraryDependencies.inc"
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// Built-in extensions also register their dependencies, but in a separate file,
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// later in the process.
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#include "ExtensionDependencies.inc"
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// LinkMode determines what libraries and flags are returned by llvm-config.
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enum LinkMode {
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// LinkModeAuto will link with the default link mode for the installation,
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// which is dependent on the value of LLVM_LINK_LLVM_DYLIB, and fall back
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// to the alternative if the required libraries are not available.
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LinkModeAuto = 0,
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// LinkModeShared will link with the dynamic component libraries if they
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// exist, and return an error otherwise.
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LinkModeShared = 1,
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// LinkModeStatic will link with the static component libraries if they
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// exist, and return an error otherwise.
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LinkModeStatic = 2,
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};
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/// Traverse a single component adding to the topological ordering in
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/// \arg RequiredLibs.
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///
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/// \param Name - The component to traverse.
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/// \param ComponentMap - A prebuilt map of component names to descriptors.
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/// \param VisitedComponents [in] [out] - The set of already visited components.
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/// \param RequiredLibs [out] - The ordered list of required
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/// libraries.
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/// \param GetComponentNames - Get the component names instead of the
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/// library name.
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static void VisitComponent(const std::string &Name,
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const StringMap<AvailableComponent *> &ComponentMap,
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std::set<AvailableComponent *> &VisitedComponents,
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std::vector<std::string> &RequiredLibs,
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bool IncludeNonInstalled, bool GetComponentNames,
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const std::function<std::string(const StringRef &)>
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*GetComponentLibraryPath,
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std::vector<std::string> *Missing,
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const std::string &DirSep) {
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// Lookup the component.
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AvailableComponent *AC = ComponentMap.lookup(Name);
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if (!AC) {
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errs() << "Can't find component: '" << Name << "' in the map. Available components are: ";
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for (const auto &Component : ComponentMap) {
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errs() << "'" << Component.first() << "' ";
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}
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errs() << "\n";
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report_fatal_error("abort");
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}
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assert(AC && "Invalid component name!");
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// Add to the visited table.
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if (!VisitedComponents.insert(AC).second) {
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// We are done if the component has already been visited.
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return;
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}
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// Only include non-installed components if requested.
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if (!AC->IsInstalled && !IncludeNonInstalled)
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return;
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// Otherwise, visit all the dependencies.
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for (unsigned i = 0; AC->RequiredLibraries[i]; ++i) {
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VisitComponent(AC->RequiredLibraries[i], ComponentMap, VisitedComponents,
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RequiredLibs, IncludeNonInstalled, GetComponentNames,
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GetComponentLibraryPath, Missing, DirSep);
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}
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// Special handling for the special 'extensions' component. Its content is
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// not populated by llvm-build, but later in the process and loaded from
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// ExtensionDependencies.inc.
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if (Name == "extensions") {
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for (auto const &AvailableExtension : AvailableExtensions) {
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for (const char *const *Iter = &AvailableExtension.RequiredLibraries[0];
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*Iter; ++Iter) {
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AvailableComponent *AC = ComponentMap.lookup(*Iter);
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if (!AC) {
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RequiredLibs.push_back(*Iter);
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} else {
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VisitComponent(*Iter, ComponentMap, VisitedComponents, RequiredLibs,
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IncludeNonInstalled, GetComponentNames,
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GetComponentLibraryPath, Missing, DirSep);
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}
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}
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}
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}
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if (GetComponentNames) {
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RequiredLibs.push_back(Name);
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return;
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}
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// Add to the required library list.
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if (AC->Library) {
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if (Missing && GetComponentLibraryPath) {
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std::string path = (*GetComponentLibraryPath)(AC->Library);
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if (DirSep == "\\") {
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std::replace(path.begin(), path.end(), '/', '\\');
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}
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if (!sys::fs::exists(path))
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Missing->push_back(path);
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}
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RequiredLibs.push_back(AC->Library);
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}
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}
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/// Compute the list of required libraries for a given list of
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/// components, in an order suitable for passing to a linker (that is, libraries
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/// appear prior to their dependencies).
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///
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/// \param Components - The names of the components to find libraries for.
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/// \param IncludeNonInstalled - Whether non-installed components should be
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/// reported.
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/// \param GetComponentNames - True if one would prefer the component names.
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static std::vector<std::string> ComputeLibsForComponents(
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const std::vector<StringRef> &Components, bool IncludeNonInstalled,
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bool GetComponentNames, const std::function<std::string(const StringRef &)>
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*GetComponentLibraryPath,
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std::vector<std::string> *Missing, const std::string &DirSep) {
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std::vector<std::string> RequiredLibs;
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std::set<AvailableComponent *> VisitedComponents;
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// Build a map of component names to information.
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StringMap<AvailableComponent *> ComponentMap;
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for (unsigned i = 0; i != array_lengthof(AvailableComponents); ++i) {
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AvailableComponent *AC = &AvailableComponents[i];
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ComponentMap[AC->Name] = AC;
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}
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// Visit the components.
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for (unsigned i = 0, e = Components.size(); i != e; ++i) {
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// Users are allowed to provide mixed case component names.
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std::string ComponentLower = Components[i].lower();
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// Validate that the user supplied a valid component name.
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if (!ComponentMap.count(ComponentLower)) {
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llvm::errs() << "llvm-config: unknown component name: " << Components[i]
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<< "\n";
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exit(1);
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}
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VisitComponent(ComponentLower, ComponentMap, VisitedComponents,
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RequiredLibs, IncludeNonInstalled, GetComponentNames,
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GetComponentLibraryPath, Missing, DirSep);
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}
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// The list is now ordered with leafs first, we want the libraries to printed
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// in the reverse order of dependency.
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std::reverse(RequiredLibs.begin(), RequiredLibs.end());
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return RequiredLibs;
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}
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/* *** */
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static void usage() {
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errs() << "\
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usage: llvm-config <OPTION>... [<COMPONENT>...]\n\
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\n\
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Get various configuration information needed to compile programs which use\n\
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LLVM. Typically called from 'configure' scripts. Examples:\n\
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llvm-config --cxxflags\n\
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llvm-config --ldflags\n\
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llvm-config --libs engine bcreader scalaropts\n\
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\n\
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Options:\n\
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--version Print LLVM version.\n\
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--prefix Print the installation prefix.\n\
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--src-root Print the source root LLVM was built from.\n\
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--obj-root Print the object root used to build LLVM.\n\
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--bindir Directory containing LLVM executables.\n\
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--includedir Directory containing LLVM headers.\n\
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--libdir Directory containing LLVM libraries.\n\
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--cmakedir Directory containing LLVM cmake modules.\n\
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--cppflags C preprocessor flags for files that include LLVM headers.\n\
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--cflags C compiler flags for files that include LLVM headers.\n\
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--cxxflags C++ compiler flags for files that include LLVM headers.\n\
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--ldflags Print Linker flags.\n\
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--system-libs System Libraries needed to link against LLVM components.\n\
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--libs Libraries needed to link against LLVM components.\n\
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--libnames Bare library names for in-tree builds.\n\
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--libfiles Fully qualified library filenames for makefile depends.\n\
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--components List of all possible components.\n\
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--targets-built List of all targets currently built.\n\
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--host-target Target triple used to configure LLVM.\n\
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--build-mode Print build mode of LLVM tree (e.g. Debug or Release).\n\
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--assertion-mode Print assertion mode of LLVM tree (ON or OFF).\n\
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--build-system Print the build system used to build LLVM (always cmake).\n\
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--has-rtti Print whether or not LLVM was built with rtti (YES or NO).\n\
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--shared-mode Print how the provided components can be collectively linked (`shared` or `static`).\n\
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--link-shared Link the components as shared libraries.\n\
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--link-static Link the component libraries statically.\n\
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--ignore-libllvm Ignore libLLVM and link component libraries instead.\n\
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Typical components:\n\
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all All LLVM libraries (default).\n\
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engine Either a native JIT or a bitcode interpreter.\n";
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exit(1);
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}
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/// Compute the path to the main executable.
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std::string GetExecutablePath(const char *Argv0) {
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// This just needs to be some symbol in the binary; C++ doesn't
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// allow taking the address of ::main however.
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void *P = (void *)(intptr_t)GetExecutablePath;
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return llvm::sys::fs::getMainExecutable(Argv0, P);
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}
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/// Expand the semi-colon delimited LLVM_DYLIB_COMPONENTS into
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/// the full list of components.
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std::vector<std::string> GetAllDyLibComponents(const bool IsInDevelopmentTree,
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const bool GetComponentNames,
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const std::string &DirSep) {
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std::vector<StringRef> DyLibComponents;
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StringRef DyLibComponentsStr(LLVM_DYLIB_COMPONENTS);
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size_t Offset = 0;
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while (true) {
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const size_t NextOffset = DyLibComponentsStr.find(';', Offset);
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DyLibComponents.push_back(DyLibComponentsStr.substr(Offset, NextOffset-Offset));
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if (NextOffset == std::string::npos) {
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break;
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}
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Offset = NextOffset + 1;
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}
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assert(!DyLibComponents.empty());
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return ComputeLibsForComponents(DyLibComponents,
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/*IncludeNonInstalled=*/IsInDevelopmentTree,
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GetComponentNames, nullptr, nullptr, DirSep);
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}
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int main(int argc, char **argv) {
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std::vector<StringRef> Components;
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bool PrintLibs = false, PrintLibNames = false, PrintLibFiles = false;
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bool PrintSystemLibs = false, PrintSharedMode = false;
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bool HasAnyOption = false;
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// llvm-config is designed to support being run both from a development tree
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// and from an installed path. We try and auto-detect which case we are in so
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// that we can report the correct information when run from a development
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// tree.
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bool IsInDevelopmentTree;
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enum { CMakeStyle, CMakeBuildModeStyle } DevelopmentTreeLayout;
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llvm::SmallString<256> CurrentPath(GetExecutablePath(argv[0]));
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std::string CurrentExecPrefix;
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std::string ActiveObjRoot;
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// If CMAKE_CFG_INTDIR is given, honor it as build mode.
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char const *build_mode = LLVM_BUILDMODE;
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#if defined(CMAKE_CFG_INTDIR)
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if (!(CMAKE_CFG_INTDIR[0] == '.' && CMAKE_CFG_INTDIR[1] == '\0'))
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build_mode = CMAKE_CFG_INTDIR;
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#endif
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// Create an absolute path, and pop up one directory (we expect to be inside a
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// bin dir).
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sys::fs::make_absolute(CurrentPath);
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CurrentExecPrefix =
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sys::path::parent_path(sys::path::parent_path(CurrentPath)).str();
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// Check to see if we are inside a development tree by comparing to possible
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// locations (prefix style or CMake style).
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if (sys::fs::equivalent(CurrentExecPrefix, LLVM_OBJ_ROOT)) {
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IsInDevelopmentTree = true;
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DevelopmentTreeLayout = CMakeStyle;
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ActiveObjRoot = LLVM_OBJ_ROOT;
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} else if (sys::fs::equivalent(sys::path::parent_path(CurrentExecPrefix),
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LLVM_OBJ_ROOT)) {
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IsInDevelopmentTree = true;
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DevelopmentTreeLayout = CMakeBuildModeStyle;
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ActiveObjRoot = LLVM_OBJ_ROOT;
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} else {
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IsInDevelopmentTree = false;
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DevelopmentTreeLayout = CMakeStyle; // Initialized to avoid warnings.
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}
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// Compute various directory locations based on the derived location
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// information.
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std::string ActivePrefix, ActiveBinDir, ActiveIncludeDir, ActiveLibDir,
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ActiveCMakeDir;
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std::string ActiveIncludeOption;
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if (IsInDevelopmentTree) {
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ActiveIncludeDir = std::string(LLVM_SRC_ROOT) + "/include";
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ActivePrefix = CurrentExecPrefix;
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// CMake organizes the products differently than a normal prefix style
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// layout.
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switch (DevelopmentTreeLayout) {
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case CMakeStyle:
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ActiveBinDir = ActiveObjRoot + "/bin";
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ActiveLibDir = ActiveObjRoot + "/lib" + LLVM_LIBDIR_SUFFIX;
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ActiveCMakeDir = ActiveLibDir + "/cmake/llvm";
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break;
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case CMakeBuildModeStyle:
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// FIXME: Should we consider the build-mode-specific path as the prefix?
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ActivePrefix = ActiveObjRoot;
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ActiveBinDir = ActiveObjRoot + "/" + build_mode + "/bin";
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ActiveLibDir =
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ActiveObjRoot + "/" + build_mode + "/lib" + LLVM_LIBDIR_SUFFIX;
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// The CMake directory isn't separated by build mode.
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ActiveCMakeDir =
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ActivePrefix + "/lib" + LLVM_LIBDIR_SUFFIX + "/cmake/llvm";
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break;
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}
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// We need to include files from both the source and object trees.
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ActiveIncludeOption =
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("-I" + ActiveIncludeDir + " " + "-I" + ActiveObjRoot + "/include");
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} else {
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ActivePrefix = CurrentExecPrefix;
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ActiveIncludeDir = ActivePrefix + "/include";
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SmallString<256> path(StringRef(LLVM_TOOLS_INSTALL_DIR));
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sys::fs::make_absolute(ActivePrefix, path);
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ActiveBinDir = std::string(path.str());
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ActiveLibDir = ActivePrefix + "/lib" + LLVM_LIBDIR_SUFFIX;
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ActiveCMakeDir = ActiveLibDir + "/cmake/llvm";
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ActiveIncludeOption = "-I" + ActiveIncludeDir;
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}
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/// We only use `shared library` mode in cases where the static library form
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/// of the components provided are not available; note however that this is
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/// skipped if we're run from within the build dir. However, once installed,
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/// we still need to provide correct output when the static archives are
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/// removed or, as in the case of CMake's `BUILD_SHARED_LIBS`, never present
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/// in the first place. This can't be done at configure/build time.
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StringRef SharedExt, SharedVersionedExt, SharedDir, SharedPrefix, StaticExt,
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StaticPrefix, StaticDir = "lib";
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std::string DirSep = "/";
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const Triple HostTriple(Triple::normalize(LLVM_HOST_TRIPLE));
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if (HostTriple.isOSWindows()) {
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SharedExt = "dll";
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SharedVersionedExt = LLVM_DYLIB_VERSION ".dll";
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if (HostTriple.isOSCygMing()) {
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SharedPrefix = "lib";
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StaticExt = "a";
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StaticPrefix = "lib";
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} else {
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StaticExt = "lib";
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DirSep = "\\";
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std::replace(ActiveObjRoot.begin(), ActiveObjRoot.end(), '/', '\\');
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std::replace(ActivePrefix.begin(), ActivePrefix.end(), '/', '\\');
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std::replace(ActiveBinDir.begin(), ActiveBinDir.end(), '/', '\\');
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std::replace(ActiveLibDir.begin(), ActiveLibDir.end(), '/', '\\');
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std::replace(ActiveCMakeDir.begin(), ActiveCMakeDir.end(), '/', '\\');
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std::replace(ActiveIncludeOption.begin(), ActiveIncludeOption.end(), '/',
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'\\');
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}
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SharedDir = ActiveBinDir;
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StaticDir = ActiveLibDir;
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} else if (HostTriple.isOSDarwin()) {
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SharedExt = "dylib";
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SharedVersionedExt = LLVM_DYLIB_VERSION ".dylib";
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StaticExt = "a";
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StaticDir = SharedDir = ActiveLibDir;
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StaticPrefix = SharedPrefix = "lib";
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} else {
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// default to the unix values:
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SharedExt = "so";
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SharedVersionedExt = LLVM_DYLIB_VERSION ".so";
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StaticExt = "a";
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StaticDir = SharedDir = ActiveLibDir;
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StaticPrefix = SharedPrefix = "lib";
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}
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const bool BuiltDyLib = !!LLVM_ENABLE_DYLIB;
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/// CMake style shared libs, ie each component is in a shared library.
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const bool BuiltSharedLibs = !!LLVM_ENABLE_SHARED;
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bool DyLibExists = false;
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const std::string DyLibName =
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(SharedPrefix + "LLVM-" + SharedVersionedExt).str();
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// If LLVM_LINK_DYLIB is ON, the single shared library will be returned
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// for "--libs", etc, if they exist. This behaviour can be overridden with
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// --link-static or --link-shared.
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bool LinkDyLib = !!LLVM_LINK_DYLIB;
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if (BuiltDyLib) {
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std::string path((SharedDir + DirSep + DyLibName).str());
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if (DirSep == "\\") {
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std::replace(path.begin(), path.end(), '/', '\\');
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}
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DyLibExists = sys::fs::exists(path);
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|
if (!DyLibExists) {
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// The shared library does not exist: don't error unless the user
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// explicitly passes --link-shared.
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LinkDyLib = false;
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}
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}
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LinkMode LinkMode =
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(LinkDyLib || BuiltSharedLibs) ? LinkModeShared : LinkModeAuto;
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|
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/// Get the component's library name without the lib prefix and the
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/// extension. Returns true if Lib is in a recognized format.
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|
auto GetComponentLibraryNameSlice = [&](const StringRef &Lib,
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StringRef &Out) {
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if (Lib.startswith("lib")) {
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unsigned FromEnd;
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if (Lib.endswith(StaticExt)) {
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FromEnd = StaticExt.size() + 1;
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} else if (Lib.endswith(SharedExt)) {
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FromEnd = SharedExt.size() + 1;
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} else {
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FromEnd = 0;
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}
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if (FromEnd != 0) {
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Out = Lib.slice(3, Lib.size() - FromEnd);
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return true;
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}
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|
}
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return false;
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};
|
|
/// Maps Unixizms to the host platform.
|
|
auto GetComponentLibraryFileName = [&](const StringRef &Lib,
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const bool Shared) {
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|
std::string LibFileName;
|
|
if (Shared) {
|
|
if (Lib == DyLibName) {
|
|
// Treat the DyLibName specially. It is not a component library and
|
|
// already has the necessary prefix and suffix (e.g. `.so`) added so
|
|
// just return it unmodified.
|
|
assert(Lib.endswith(SharedExt) && "DyLib is missing suffix");
|
|
LibFileName = std::string(Lib);
|
|
} else {
|
|
LibFileName = (SharedPrefix + Lib + "." + SharedExt).str();
|
|
}
|
|
} else {
|
|
// default to static
|
|
LibFileName = (StaticPrefix + Lib + "." + StaticExt).str();
|
|
}
|
|
|
|
return LibFileName;
|
|
};
|
|
/// Get the full path for a possibly shared component library.
|
|
auto GetComponentLibraryPath = [&](const StringRef &Name, const bool Shared) {
|
|
auto LibFileName = GetComponentLibraryFileName(Name, Shared);
|
|
if (Shared) {
|
|
return (SharedDir + DirSep + LibFileName).str();
|
|
} else {
|
|
return (StaticDir + DirSep + LibFileName).str();
|
|
}
|
|
};
|
|
|
|
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 == "--cmakedir") {
|
|
OS << ActiveCMakeDir << '\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 << ((HostTriple.isWindowsMSVCEnvironment()) ? "-LIBPATH:" : "-L")
|
|
<< ActiveLibDir << ' ' << LLVM_LDFLAGS << '\n';
|
|
} else if (Arg == "--system-libs") {
|
|
PrintSystemLibs = true;
|
|
} else if (Arg == "--libs") {
|
|
PrintLibs = true;
|
|
} else if (Arg == "--libnames") {
|
|
PrintLibNames = true;
|
|
} else if (Arg == "--libfiles") {
|
|
PrintLibFiles = true;
|
|
} else if (Arg == "--components") {
|
|
/// If there are missing static archives and a dylib was
|
|
/// built, print LLVM_DYLIB_COMPONENTS instead of everything
|
|
/// in the manifest.
|
|
std::vector<std::string> Components;
|
|
for (unsigned j = 0; j != array_lengthof(AvailableComponents); ++j) {
|
|
// Only include non-installed components when in a development tree.
|
|
if (!AvailableComponents[j].IsInstalled && !IsInDevelopmentTree)
|
|
continue;
|
|
|
|
Components.push_back(AvailableComponents[j].Name);
|
|
if (AvailableComponents[j].Library && !IsInDevelopmentTree) {
|
|
std::string path(
|
|
GetComponentLibraryPath(AvailableComponents[j].Library, false));
|
|
if (DirSep == "\\") {
|
|
std::replace(path.begin(), path.end(), '/', '\\');
|
|
}
|
|
if (DyLibExists && !sys::fs::exists(path)) {
|
|
Components =
|
|
GetAllDyLibComponents(IsInDevelopmentTree, true, DirSep);
|
|
llvm::sort(Components);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (unsigned I = 0; I < Components.size(); ++I) {
|
|
if (I) {
|
|
OS << ' ';
|
|
}
|
|
|
|
OS << Components[I];
|
|
}
|
|
OS << '\n';
|
|
} else if (Arg == "--targets-built") {
|
|
OS << LLVM_TARGETS_BUILT << '\n';
|
|
} else if (Arg == "--host-target") {
|
|
OS << Triple::normalize(LLVM_DEFAULT_TARGET_TRIPLE) << '\n';
|
|
} else if (Arg == "--build-mode") {
|
|
OS << build_mode << '\n';
|
|
} else if (Arg == "--assertion-mode") {
|
|
#if defined(NDEBUG)
|
|
OS << "OFF\n";
|
|
#else
|
|
OS << "ON\n";
|
|
#endif
|
|
} else if (Arg == "--build-system") {
|
|
OS << LLVM_BUILD_SYSTEM << '\n';
|
|
} else if (Arg == "--has-rtti") {
|
|
OS << (LLVM_HAS_RTTI ? "YES" : "NO") << '\n';
|
|
} else if (Arg == "--shared-mode") {
|
|
PrintSharedMode = true;
|
|
} else if (Arg == "--obj-root") {
|
|
OS << ActivePrefix << '\n';
|
|
} else if (Arg == "--src-root") {
|
|
OS << LLVM_SRC_ROOT << '\n';
|
|
} else if (Arg == "--ignore-libllvm") {
|
|
LinkDyLib = false;
|
|
LinkMode = BuiltSharedLibs ? LinkModeShared : LinkModeAuto;
|
|
} else if (Arg == "--link-shared") {
|
|
LinkMode = LinkModeShared;
|
|
} else if (Arg == "--link-static") {
|
|
LinkMode = LinkModeStatic;
|
|
} else {
|
|
usage();
|
|
}
|
|
} else {
|
|
Components.push_back(Arg);
|
|
}
|
|
}
|
|
|
|
if (!HasAnyOption)
|
|
usage();
|
|
|
|
if (LinkMode == LinkModeShared && !DyLibExists && !BuiltSharedLibs) {
|
|
WithColor::error(errs(), "llvm-config") << DyLibName << " is missing\n";
|
|
return 1;
|
|
}
|
|
|
|
if (PrintLibs || PrintLibNames || PrintLibFiles || PrintSystemLibs ||
|
|
PrintSharedMode) {
|
|
|
|
if (PrintSharedMode && BuiltSharedLibs) {
|
|
OS << "shared\n";
|
|
return 0;
|
|
}
|
|
|
|
// If no components were specified, default to "all".
|
|
if (Components.empty())
|
|
Components.push_back("all");
|
|
|
|
// Construct the list of all the required libraries.
|
|
std::function<std::string(const StringRef &)>
|
|
GetComponentLibraryPathFunction = [&](const StringRef &Name) {
|
|
return GetComponentLibraryPath(Name, LinkMode == LinkModeShared);
|
|
};
|
|
std::vector<std::string> MissingLibs;
|
|
std::vector<std::string> RequiredLibs = ComputeLibsForComponents(
|
|
Components,
|
|
/*IncludeNonInstalled=*/IsInDevelopmentTree, false,
|
|
&GetComponentLibraryPathFunction, &MissingLibs, DirSep);
|
|
if (!MissingLibs.empty()) {
|
|
switch (LinkMode) {
|
|
case LinkModeShared:
|
|
if (LinkDyLib && !BuiltSharedLibs)
|
|
break;
|
|
// Using component shared libraries.
|
|
for (auto &Lib : MissingLibs)
|
|
WithColor::error(errs(), "llvm-config") << "missing: " << Lib << "\n";
|
|
return 1;
|
|
case LinkModeAuto:
|
|
if (DyLibExists) {
|
|
LinkMode = LinkModeShared;
|
|
break;
|
|
}
|
|
WithColor::error(errs(), "llvm-config")
|
|
<< "component libraries and shared library\n\n";
|
|
LLVM_FALLTHROUGH;
|
|
case LinkModeStatic:
|
|
for (auto &Lib : MissingLibs)
|
|
WithColor::error(errs(), "llvm-config") << "missing: " << Lib << "\n";
|
|
return 1;
|
|
}
|
|
} else if (LinkMode == LinkModeAuto) {
|
|
LinkMode = LinkModeStatic;
|
|
}
|
|
|
|
if (PrintSharedMode) {
|
|
std::unordered_set<std::string> FullDyLibComponents;
|
|
std::vector<std::string> DyLibComponents =
|
|
GetAllDyLibComponents(IsInDevelopmentTree, false, DirSep);
|
|
|
|
for (auto &Component : DyLibComponents) {
|
|
FullDyLibComponents.insert(Component);
|
|
}
|
|
DyLibComponents.clear();
|
|
|
|
for (auto &Lib : RequiredLibs) {
|
|
if (!FullDyLibComponents.count(Lib)) {
|
|
OS << "static\n";
|
|
return 0;
|
|
}
|
|
}
|
|
FullDyLibComponents.clear();
|
|
|
|
if (LinkMode == LinkModeShared) {
|
|
OS << "shared\n";
|
|
return 0;
|
|
} else {
|
|
OS << "static\n";
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (PrintLibs || PrintLibNames || PrintLibFiles) {
|
|
|
|
auto PrintForLib = [&](const StringRef &Lib) {
|
|
const bool Shared = LinkMode == LinkModeShared;
|
|
if (PrintLibNames) {
|
|
OS << GetComponentLibraryFileName(Lib, Shared);
|
|
} else if (PrintLibFiles) {
|
|
OS << GetComponentLibraryPath(Lib, Shared);
|
|
} else if (PrintLibs) {
|
|
// On Windows, output full path to library without parameters.
|
|
// Elsewhere, if this is a typical library name, include it using -l.
|
|
if (HostTriple.isWindowsMSVCEnvironment()) {
|
|
OS << GetComponentLibraryPath(Lib, Shared);
|
|
} else {
|
|
StringRef LibName;
|
|
if (GetComponentLibraryNameSlice(Lib, LibName)) {
|
|
// Extract library name (remove prefix and suffix).
|
|
OS << "-l" << LibName;
|
|
} else {
|
|
// Lib is already a library name without prefix and suffix.
|
|
OS << "-l" << Lib;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
if (LinkMode == LinkModeShared && LinkDyLib) {
|
|
PrintForLib(DyLibName);
|
|
} else {
|
|
for (unsigned i = 0, e = RequiredLibs.size(); i != e; ++i) {
|
|
auto Lib = RequiredLibs[i];
|
|
if (i)
|
|
OS << ' ';
|
|
|
|
PrintForLib(Lib);
|
|
}
|
|
}
|
|
OS << '\n';
|
|
}
|
|
|
|
// Print SYSTEM_LIBS after --libs.
|
|
// FIXME: Each LLVM component may have its dependent system libs.
|
|
if (PrintSystemLibs) {
|
|
// Output system libraries only if linking against a static
|
|
// library (since the shared library links to all system libs
|
|
// already)
|
|
OS << (LinkMode == LinkModeStatic ? LLVM_SYSTEM_LIBS : "") << '\n';
|
|
}
|
|
} else if (!Components.empty()) {
|
|
WithColor::error(errs(), "llvm-config")
|
|
<< "components given, but unused\n\n";
|
|
usage();
|
|
}
|
|
|
|
return 0;
|
|
}
|