| //===- MultilibBuilder.cpp - MultilibBuilder Implementation -===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Driver/MultilibBuilder.h" |
| #include "ToolChains/CommonArgs.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/StringMap.h" |
| #include "llvm/Support/Path.h" |
| #include "llvm/Support/Regex.h" |
| #include "llvm/Support/raw_ostream.h" |
| |
| using namespace clang; |
| using namespace driver; |
| |
| /// normalize Segment to "/foo/bar" or "". |
| static void normalizePathSegment(std::string &Segment) { |
| StringRef seg = Segment; |
| |
| // Prune trailing "/" or "./" |
| while (true) { |
| StringRef last = llvm::sys::path::filename(seg); |
| if (last != ".") |
| break; |
| seg = llvm::sys::path::parent_path(seg); |
| } |
| |
| if (seg.empty() || seg == "/") { |
| Segment.clear(); |
| return; |
| } |
| |
| // Add leading '/' |
| if (seg.front() != '/') { |
| Segment = "/" + seg.str(); |
| } else { |
| Segment = std::string(seg); |
| } |
| } |
| |
| MultilibBuilder::MultilibBuilder(StringRef GCC, StringRef OS, StringRef Include) |
| : GCCSuffix(GCC), OSSuffix(OS), IncludeSuffix(Include) { |
| normalizePathSegment(GCCSuffix); |
| normalizePathSegment(OSSuffix); |
| normalizePathSegment(IncludeSuffix); |
| } |
| |
| MultilibBuilder::MultilibBuilder(StringRef Suffix) |
| : MultilibBuilder(Suffix, Suffix, Suffix) {} |
| |
| MultilibBuilder &MultilibBuilder::gccSuffix(StringRef S) { |
| GCCSuffix = std::string(S); |
| normalizePathSegment(GCCSuffix); |
| return *this; |
| } |
| |
| MultilibBuilder &MultilibBuilder::osSuffix(StringRef S) { |
| OSSuffix = std::string(S); |
| normalizePathSegment(OSSuffix); |
| return *this; |
| } |
| |
| MultilibBuilder &MultilibBuilder::includeSuffix(StringRef S) { |
| IncludeSuffix = std::string(S); |
| normalizePathSegment(IncludeSuffix); |
| return *this; |
| } |
| |
| bool MultilibBuilder::isValid() const { |
| llvm::StringMap<int> FlagSet; |
| for (unsigned I = 0, N = Flags.size(); I != N; ++I) { |
| StringRef Flag(Flags[I]); |
| llvm::StringMap<int>::iterator SI = FlagSet.find(Flag.substr(1)); |
| |
| assert(StringRef(Flag).front() == '-' || StringRef(Flag).front() == '!'); |
| |
| if (SI == FlagSet.end()) |
| FlagSet[Flag.substr(1)] = I; |
| else if (Flags[I] != Flags[SI->getValue()]) |
| return false; |
| } |
| return true; |
| } |
| |
| MultilibBuilder &MultilibBuilder::flag(StringRef Flag, bool Disallow) { |
| tools::addMultilibFlag(!Disallow, Flag, Flags); |
| return *this; |
| } |
| |
| Multilib MultilibBuilder::makeMultilib() const { |
| return Multilib(GCCSuffix, OSSuffix, IncludeSuffix, Flags); |
| } |
| |
| MultilibSetBuilder &MultilibSetBuilder::Maybe(const MultilibBuilder &M) { |
| MultilibBuilder Opposite; |
| // Negate positive flags |
| for (StringRef Flag : M.flags()) { |
| if (Flag.front() == '-') |
| Opposite.flag(Flag, /*Disallow=*/true); |
| } |
| return Either(M, Opposite); |
| } |
| |
| MultilibSetBuilder &MultilibSetBuilder::Either(const MultilibBuilder &M1, |
| const MultilibBuilder &M2) { |
| return Either({M1, M2}); |
| } |
| |
| MultilibSetBuilder &MultilibSetBuilder::Either(const MultilibBuilder &M1, |
| const MultilibBuilder &M2, |
| const MultilibBuilder &M3) { |
| return Either({M1, M2, M3}); |
| } |
| |
| MultilibSetBuilder &MultilibSetBuilder::Either(const MultilibBuilder &M1, |
| const MultilibBuilder &M2, |
| const MultilibBuilder &M3, |
| const MultilibBuilder &M4) { |
| return Either({M1, M2, M3, M4}); |
| } |
| |
| MultilibSetBuilder &MultilibSetBuilder::Either(const MultilibBuilder &M1, |
| const MultilibBuilder &M2, |
| const MultilibBuilder &M3, |
| const MultilibBuilder &M4, |
| const MultilibBuilder &M5) { |
| return Either({M1, M2, M3, M4, M5}); |
| } |
| |
| static MultilibBuilder compose(const MultilibBuilder &Base, |
| const MultilibBuilder &New) { |
| SmallString<128> GCCSuffix; |
| llvm::sys::path::append(GCCSuffix, "/", Base.gccSuffix(), New.gccSuffix()); |
| SmallString<128> OSSuffix; |
| llvm::sys::path::append(OSSuffix, "/", Base.osSuffix(), New.osSuffix()); |
| SmallString<128> IncludeSuffix; |
| llvm::sys::path::append(IncludeSuffix, "/", Base.includeSuffix(), |
| New.includeSuffix()); |
| |
| MultilibBuilder Composed(GCCSuffix, OSSuffix, IncludeSuffix); |
| |
| MultilibBuilder::flags_list &Flags = Composed.flags(); |
| |
| Flags.insert(Flags.end(), Base.flags().begin(), Base.flags().end()); |
| Flags.insert(Flags.end(), New.flags().begin(), New.flags().end()); |
| |
| return Composed; |
| } |
| |
| MultilibSetBuilder & |
| MultilibSetBuilder::Either(ArrayRef<MultilibBuilder> MultilibSegments) { |
| multilib_list Composed; |
| |
| if (Multilibs.empty()) |
| Multilibs.insert(Multilibs.end(), MultilibSegments.begin(), |
| MultilibSegments.end()); |
| else { |
| for (const auto &New : MultilibSegments) { |
| for (const auto &Base : Multilibs) { |
| MultilibBuilder MO = compose(Base, New); |
| if (MO.isValid()) |
| Composed.push_back(MO); |
| } |
| } |
| |
| Multilibs = Composed; |
| } |
| |
| return *this; |
| } |
| |
| MultilibSetBuilder &MultilibSetBuilder::FilterOut(const char *Regex) { |
| llvm::Regex R(Regex); |
| #ifndef NDEBUG |
| std::string Error; |
| if (!R.isValid(Error)) { |
| llvm::errs() << Error; |
| llvm_unreachable("Invalid regex!"); |
| } |
| #endif |
| llvm::erase_if(Multilibs, [&R](const MultilibBuilder &M) { |
| return R.match(M.gccSuffix()); |
| }); |
| return *this; |
| } |
| |
| MultilibSet MultilibSetBuilder::makeMultilibSet() const { |
| MultilibSet Result; |
| for (const auto &M : Multilibs) { |
| Result.push_back(M.makeMultilib()); |
| } |
| return Result; |
| } |