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-rw-r--r--tools/llvm-config/llvm-config.cpp285
1 files changed, 254 insertions, 31 deletions
diff --git a/tools/llvm-config/llvm-config.cpp b/tools/llvm-config/llvm-config.cpp
index 879b9ab0945b..80f627936d0c 100644
--- a/tools/llvm-config/llvm-config.cpp
+++ b/tools/llvm-config/llvm-config.cpp
@@ -30,6 +30,7 @@
#include <cstdlib>
#include <set>
#include <vector>
+#include <unordered_set>
using namespace llvm;
@@ -51,12 +52,16 @@ using namespace llvm;
/// \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,
+/// \param RequiredLibs [out] - The ordered list of required
+/// libraries.
+/// \param GetComponentNames - Get the component names instead of the
+/// library name.
+static void VisitComponent(const std::string& Name,
const StringMap<AvailableComponent*> &ComponentMap,
std::set<AvailableComponent*> &VisitedComponents,
- std::vector<StringRef> &RequiredLibs,
- bool IncludeNonInstalled) {
+ std::vector<std::string> &RequiredLibs,
+ bool IncludeNonInstalled, bool GetComponentNames,
+ const std::string *ActiveLibDir, bool *HasMissing) {
// Lookup the component.
AvailableComponent *AC = ComponentMap.lookup(Name);
assert(AC && "Invalid component name!");
@@ -74,12 +79,22 @@ static void VisitComponent(StringRef Name,
// Otherwise, visit all the dependencies.
for (unsigned i = 0; AC->RequiredLibraries[i]; ++i) {
VisitComponent(AC->RequiredLibraries[i], ComponentMap, VisitedComponents,
- RequiredLibs, IncludeNonInstalled);
+ RequiredLibs, IncludeNonInstalled, GetComponentNames,
+ ActiveLibDir, HasMissing);
+ }
+
+ if (GetComponentNames) {
+ RequiredLibs.push_back(Name);
+ return;
}
// Add to the required library list.
- if (AC->Library)
+ if (AC->Library) {
+ if (!IncludeNonInstalled && HasMissing && !*HasMissing && ActiveLibDir) {
+ *HasMissing = !sys::fs::exists(*ActiveLibDir + "/" + AC->Library);
+ }
RequiredLibs.push_back(AC->Library);
+ }
}
/// \brief Compute the list of required libraries for a given list of
@@ -87,14 +102,15 @@ static void VisitComponent(StringRef Name,
/// 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.
/// \param IncludeNonInstalled - Whether non-installed components should be
/// reported.
-static void ComputeLibsForComponents(const std::vector<StringRef> &Components,
- std::vector<StringRef> &RequiredLibs,
- bool IncludeNonInstalled) {
- std::set<AvailableComponent*> VisitedComponents;
+/// \param GetComponentNames - True if one would prefer the component names.
+static std::vector<std::string>
+ComputeLibsForComponents(const std::vector<StringRef> &Components,
+ bool IncludeNonInstalled, bool GetComponentNames,
+ const std::string *ActiveLibDir, bool *HasMissing) {
+ std::vector<std::string> RequiredLibs;
+ std::set<AvailableComponent *> VisitedComponents;
// Build a map of component names to information.
StringMap<AvailableComponent*> ComponentMap;
@@ -116,12 +132,15 @@ static void ComputeLibsForComponents(const std::vector<StringRef> &Components,
}
VisitComponent(ComponentLower, ComponentMap, VisitedComponents,
- RequiredLibs, IncludeNonInstalled);
+ RequiredLibs, IncludeNonInstalled, GetComponentNames,
+ ActiveLibDir, HasMissing);
}
// 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());
+
+ return RequiredLibs;
}
/* *** */
@@ -157,6 +176,9 @@ Options:\n\
--host-target Target triple used to configure LLVM.\n\
--build-mode Print build mode of LLVM tree (e.g. Debug or Release).\n\
--assertion-mode Print assertion mode of LLVM tree (ON or OFF).\n\
+ --build-system Print the build system used to build LLVM (autoconf or cmake).\n\
+ --has-rtti Print whether or not LLVM was built with rtti (YES or NO).\n\
+ --shared-mode Print how the provided components can be collectively linked (`shared` or `static`).\n\
Typical components:\n\
all All LLVM libraries (default).\n\
engine Either a native JIT or a bitcode interpreter.\n";
@@ -171,10 +193,34 @@ std::string GetExecutablePath(const char *Argv0) {
return llvm::sys::fs::getMainExecutable(Argv0, P);
}
+/// \brief Expand the semi-colon delimited LLVM_DYLIB_COMPONENTS into
+/// the full list of components.
+std::vector<std::string> GetAllDyLibComponents(const bool IsInDevelopmentTree,
+ const bool GetComponentNames) {
+ std::vector<StringRef> DyLibComponents;
+
+ StringRef DyLibComponentsStr(LLVM_DYLIB_COMPONENTS);
+ size_t Offset = 0;
+ while (true) {
+ const size_t NextOffset = DyLibComponentsStr.find(';', Offset);
+ DyLibComponents.push_back(DyLibComponentsStr.substr(Offset, NextOffset));
+ if (NextOffset == std::string::npos) {
+ break;
+ }
+ Offset = NextOffset + 1;
+ }
+
+ assert(!DyLibComponents.empty());
+
+ return ComputeLibsForComponents(DyLibComponents,
+ /*IncludeNonInstalled=*/IsInDevelopmentTree,
+ GetComponentNames, nullptr, nullptr);
+}
+
int main(int argc, char **argv) {
std::vector<StringRef> Components;
bool PrintLibs = false, PrintLibNames = false, PrintLibFiles = false;
- bool PrintSystemLibs = false;
+ bool PrintSystemLibs = false, PrintSharedMode = false;
bool HasAnyOption = false;
// llvm-config is designed to support being run both from a development tree
@@ -269,6 +315,108 @@ int main(int argc, char **argv) {
ActiveIncludeOption = "-I" + ActiveIncludeDir;
}
+ /// We only use `shared library` mode in cases where the static library form
+ /// of the components provided are not available; note however that this is
+ /// skipped if we're run from within the build dir. However, once installed,
+ /// we still need to provide correct output when the static archives are
+ /// removed or, as in the case of CMake's `BUILD_SHARED_LIBS`, never present
+ /// in the first place. This can't be done at configure/build time.
+
+ StringRef SharedExt, SharedVersionedExt, SharedDir, SharedPrefix, StaticExt,
+ StaticPrefix, StaticDir = "lib";
+ const Triple HostTriple(Triple::normalize(LLVM_DEFAULT_TARGET_TRIPLE));
+ if (HostTriple.isOSWindows()) {
+ SharedExt = "dll";
+ SharedVersionedExt = PACKAGE_VERSION ".dll";
+ StaticExt = "a";
+ SharedDir = ActiveBinDir;
+ StaticDir = ActiveLibDir;
+ StaticPrefix = SharedPrefix = "lib";
+ } else if (HostTriple.isOSDarwin()) {
+ SharedExt = "dylib";
+ SharedVersionedExt = PACKAGE_VERSION ".dylib";
+ StaticExt = "a";
+ StaticDir = SharedDir = ActiveLibDir;
+ StaticPrefix = SharedPrefix = "lib";
+ } else {
+ // default to the unix values:
+ SharedExt = "so";
+ SharedVersionedExt = PACKAGE_VERSION ".so";
+ StaticExt = "a";
+ StaticDir = SharedDir = ActiveLibDir;
+ StaticPrefix = SharedPrefix = "lib";
+ }
+
+ const bool BuiltDyLib = (std::strcmp(LLVM_ENABLE_DYLIB, "ON") == 0);
+
+ enum { CMake, AutoConf } ConfigTool;
+ if (std::strcmp(LLVM_BUILD_SYSTEM, "cmake") == 0) {
+ ConfigTool = CMake;
+ } else {
+ ConfigTool = AutoConf;
+ }
+
+ /// CMake style shared libs, ie each component is in a shared library.
+ const bool BuiltSharedLibs =
+ (ConfigTool == CMake && std::strcmp(LLVM_ENABLE_SHARED, "ON") == 0);
+
+ bool DyLibExists = false;
+ const std::string DyLibName =
+ (SharedPrefix + "LLVM-" + SharedVersionedExt).str();
+
+ if (BuiltDyLib) {
+ DyLibExists = sys::fs::exists(SharedDir + "/" + DyLibName);
+ }
+
+ /// Get the component's library name without the lib prefix and the
+ /// extension. Returns true if Lib is in a recognized format.
+ auto GetComponentLibraryNameSlice = [&](const StringRef &Lib,
+ StringRef &Out) {
+ if (Lib.startswith("lib")) {
+ unsigned FromEnd;
+ if (Lib.endswith(StaticExt)) {
+ FromEnd = StaticExt.size() + 1;
+ } else if (Lib.endswith(SharedExt)) {
+ FromEnd = SharedExt.size() + 1;
+ } else {
+ FromEnd = 0;
+ }
+
+ if (FromEnd != 0) {
+ Out = Lib.slice(3, Lib.size() - FromEnd);
+ return true;
+ }
+ }
+
+ return false;
+ };
+ /// Maps Unixizms to the host platform.
+ auto GetComponentLibraryFileName = [&](const StringRef &Lib,
+ const bool ForceShared) {
+ std::string LibFileName = Lib;
+ StringRef LibName;
+ if (GetComponentLibraryNameSlice(Lib, LibName)) {
+ if (BuiltSharedLibs || ForceShared) {
+ LibFileName = (SharedPrefix + LibName + "." + SharedExt).str();
+ } else {
+ // default to static
+ LibFileName = (StaticPrefix + LibName + "." + StaticExt).str();
+ }
+ }
+
+ return LibFileName;
+ };
+ /// Get the full path for a possibly shared component library.
+ auto GetComponentLibraryPath = [&](const StringRef &Name,
+ const bool ForceShared) {
+ auto LibFileName = GetComponentLibraryFileName(Name, ForceShared);
+ if (BuiltSharedLibs || ForceShared) {
+ return (SharedDir + "/" + LibFileName).str();
+ } else {
+ return (StaticDir + "/" + LibFileName).str();
+ }
+ };
+
raw_ostream &OS = outs();
for (int i = 1; i != argc; ++i) {
StringRef Arg = argv[i];
@@ -302,13 +450,33 @@ int main(int argc, char **argv) {
} 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;
- OS << ' ';
- OS << AvailableComponents[j].Name;
+ Components.push_back(AvailableComponents[j].Name);
+ if (AvailableComponents[j].Library && !IsInDevelopmentTree) {
+ if (DyLibExists &&
+ !sys::fs::exists(GetComponentLibraryPath(
+ AvailableComponents[j].Library, false))) {
+ Components = GetAllDyLibComponents(IsInDevelopmentTree, true);
+ std::sort(Components.begin(), Components.end());
+ break;
+ }
+ }
+ }
+
+ for (unsigned I = 0; I < Components.size(); ++I) {
+ if (I) {
+ OS << ' ';
+ }
+
+ OS << Components[I];
}
OS << '\n';
} else if (Arg == "--targets-built") {
@@ -323,6 +491,12 @@ int main(int argc, char **argv) {
#else
OS << "ON\n";
#endif
+ } else if (Arg == "--build-system") {
+ OS << LLVM_BUILD_SYSTEM << '\n';
+ } else if (Arg == "--has-rtti") {
+ OS << LLVM_HAS_RTTI << '\n';
+ } else if (Arg == "--shared-mode") {
+ PrintSharedMode = true;
} else if (Arg == "--obj-root") {
OS << ActivePrefix << '\n';
} else if (Arg == "--src-root") {
@@ -338,35 +512,84 @@ int main(int argc, char **argv) {
if (!HasAnyOption)
usage();
- if (PrintLibs || PrintLibNames || PrintLibFiles || PrintSystemLibs) {
+ 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::vector<StringRef> RequiredLibs;
- ComputeLibsForComponents(Components, RequiredLibs,
- /*IncludeNonInstalled=*/IsInDevelopmentTree);
+ bool HasMissing = false;
+ std::vector<std::string> RequiredLibs =
+ ComputeLibsForComponents(Components,
+ /*IncludeNonInstalled=*/IsInDevelopmentTree,
+ false, &ActiveLibDir, &HasMissing);
+
+ if (PrintSharedMode) {
+ std::unordered_set<std::string> FullDyLibComponents;
+ std::vector<std::string> DyLibComponents =
+ GetAllDyLibComponents(IsInDevelopmentTree, false);
+
+ 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 (HasMissing && DyLibExists) {
+ OS << "shared\n";
+ return 0;
+ } else {
+ OS << "static\n";
+ return 0;
+ }
+ }
if (PrintLibs || PrintLibNames || PrintLibFiles) {
- for (unsigned i = 0, e = RequiredLibs.size(); i != e; ++i) {
- StringRef Lib = RequiredLibs[i];
- if (i)
- OS << ' ';
+ auto PrintForLib = [&](const StringRef &Lib, const bool ForceShared) {
if (PrintLibNames) {
- OS << Lib;
+ OS << GetComponentLibraryFileName(Lib, ForceShared);
} else if (PrintLibFiles) {
- OS << ActiveLibDir << '/' << Lib;
+ OS << GetComponentLibraryPath(Lib, ForceShared);
} 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;
+ StringRef LibName;
+ if (Lib.startswith("lib")) {
+ if (GetComponentLibraryNameSlice(Lib, LibName)) {
+ OS << "-l" << LibName;
+ } else {
+ OS << "-l:" << GetComponentLibraryFileName(Lib, ForceShared);
+ }
+ } else {
+ // Otherwise, print the full path.
+ OS << GetComponentLibraryPath(Lib, ForceShared);
}
+ }
+ };
+
+ if (HasMissing && DyLibExists) {
+ PrintForLib(DyLibName, true);
+ } else {
+ for (unsigned i = 0, e = RequiredLibs.size(); i != e; ++i) {
+ auto Lib = RequiredLibs[i];
+ if (i)
+ OS << ' ';
- // Otherwise, print the full path.
- OS << ActiveLibDir << '/' << Lib;
+ PrintForLib(Lib, false);
}
}
OS << '\n';
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