Index: llvm/trunk/include/llvm/Object/ArchiveWriter.h =================================================================== --- llvm/trunk/include/llvm/Object/ArchiveWriter.h +++ llvm/trunk/include/llvm/Object/ArchiveWriter.h @@ -26,7 +26,6 @@ sys::TimePoint ModTime; unsigned UID = 0, GID = 0, Perms = 0644; - bool IsNew = false; NewArchiveMember() = default; NewArchiveMember(MemoryBufferRef BufRef); @@ -37,6 +36,8 @@ bool Deterministic); }; +std::string computeArchiveRelativePath(StringRef From, StringRef To); + Error writeArchive(StringRef ArcName, ArrayRef NewMembers, bool WriteSymtab, object::Archive::Kind Kind, bool Deterministic, bool Thin, Index: llvm/trunk/lib/Object/ArchiveWriter.cpp =================================================================== --- llvm/trunk/lib/Object/ArchiveWriter.cpp +++ llvm/trunk/lib/Object/ArchiveWriter.cpp @@ -48,7 +48,6 @@ return BufOrErr.takeError(); NewArchiveMember M; - assert(M.IsNew == false); M.Buf = MemoryBuffer::getMemBuffer(*BufOrErr, false); M.MemberName = M.Buf->getBufferIdentifier(); if (!Deterministic) { @@ -98,7 +97,6 @@ return errorCodeToError(std::error_code(errno, std::generic_category())); NewArchiveMember M; - M.IsNew = true; M.Buf = std::move(*MemberBufferOrErr); M.MemberName = M.Buf->getBufferIdentifier(); if (!Deterministic) { @@ -191,35 +189,6 @@ return Thin || Name.size() >= 16 || Name.contains('/'); } -// Compute the relative path from From to To. -static std::string computeRelativePath(StringRef From, StringRef To) { - if (sys::path::is_absolute(From) || sys::path::is_absolute(To)) - return To; - - StringRef DirFrom = sys::path::parent_path(From); - auto FromI = sys::path::begin(DirFrom); - auto ToI = sys::path::begin(To); - while (*FromI == *ToI) { - ++FromI; - ++ToI; - } - - SmallString<128> Relative; - for (auto FromE = sys::path::end(DirFrom); FromI != FromE; ++FromI) - sys::path::append(Relative, ".."); - - for (auto ToE = sys::path::end(To); ToI != ToE; ++ToI) - sys::path::append(Relative, *ToI); - -#ifdef _WIN32 - // Replace backslashes with slashes so that the path is portable between *nix - // and Windows. - std::replace(Relative.begin(), Relative.end(), '\\', '/'); -#endif - - return Relative.str(); -} - static bool is64BitKind(object::Archive::Kind Kind) { switch (Kind) { case object::Archive::K_GNU: @@ -234,27 +203,11 @@ llvm_unreachable("not supported for writting"); } -static void addToStringTable(raw_ostream &Out, StringRef ArcName, - const NewArchiveMember &M, bool Thin) { - StringRef ID = M.Buf->getBufferIdentifier(); - if (Thin) { - if (M.IsNew) - Out << computeRelativePath(ArcName, ID); - else - Out << ID; - } else - Out << M.MemberName; - Out << "/\n"; -} - -static void printMemberHeader(raw_ostream &Out, uint64_t Pos, - raw_ostream &StringTable, - StringMap &MemberNames, - object::Archive::Kind Kind, bool Thin, - StringRef ArcName, const NewArchiveMember &M, - sys::TimePoint ModTime, - unsigned Size) { - +static void +printMemberHeader(raw_ostream &Out, uint64_t Pos, raw_ostream &StringTable, + StringMap &MemberNames, object::Archive::Kind Kind, + bool Thin, const NewArchiveMember &M, + sys::TimePoint ModTime, unsigned Size) { if (isBSDLike(Kind)) return printBSDMemberHeader(Out, Pos, M.MemberName, ModTime, M.UID, M.GID, M.Perms, Size); @@ -265,12 +218,12 @@ uint64_t NamePos; if (Thin) { NamePos = StringTable.tell(); - addToStringTable(StringTable, ArcName, M, Thin); + StringTable << M.MemberName << "/\n"; } else { auto Insertion = MemberNames.insert({M.MemberName, uint64_t(0)}); if (Insertion.second) { Insertion.first->second = StringTable.tell(); - addToStringTable(StringTable, ArcName, M, Thin); + StringTable << M.MemberName << "/\n"; } NamePos = Insertion.first->second; } @@ -432,8 +385,8 @@ static Expected> computeMemberData(raw_ostream &StringTable, raw_ostream &SymNames, - object::Archive::Kind Kind, bool Thin, StringRef ArcName, - bool Deterministic, ArrayRef NewMembers) { + object::Archive::Kind Kind, bool Thin, bool Deterministic, + ArrayRef NewMembers) { static char PaddingData[8] = {'\n', '\n', '\n', '\n', '\n', '\n', '\n', '\n'}; // This ignores the symbol table, but we only need the value mod 8 and the @@ -520,8 +473,8 @@ ModTime = sys::toTimePoint(FilenameCount[M.MemberName]++); else ModTime = M.ModTime; - printMemberHeader(Out, Pos, StringTable, MemberNames, Kind, Thin, ArcName, - M, ModTime, Buf.getBufferSize() + MemberPadding); + printMemberHeader(Out, Pos, StringTable, MemberNames, Kind, Thin, M, + ModTime, Buf.getBufferSize() + MemberPadding); Out.flush(); Expected> Symbols = @@ -540,11 +493,40 @@ return Ret; } -Error llvm::writeArchive(StringRef ArcName, - ArrayRef NewMembers, - bool WriteSymtab, object::Archive::Kind Kind, - bool Deterministic, bool Thin, - std::unique_ptr OldArchiveBuf) { +namespace llvm { +// Compute the relative path from From to To. +std::string computeArchiveRelativePath(StringRef From, StringRef To) { + if (sys::path::is_absolute(From) || sys::path::is_absolute(To)) + return To; + + StringRef DirFrom = sys::path::parent_path(From); + auto FromI = sys::path::begin(DirFrom); + auto ToI = sys::path::begin(To); + while (*FromI == *ToI) { + ++FromI; + ++ToI; + } + + SmallString<128> Relative; + for (auto FromE = sys::path::end(DirFrom); FromI != FromE; ++FromI) + sys::path::append(Relative, ".."); + + for (auto ToE = sys::path::end(To); ToI != ToE; ++ToI) + sys::path::append(Relative, *ToI); + +#ifdef _WIN32 + // Replace backslashes with slashes so that the path is portable between *nix + // and Windows. + std::replace(Relative.begin(), Relative.end(), '\\', '/'); +#endif + + return Relative.str(); +} + +Error writeArchive(StringRef ArcName, ArrayRef NewMembers, + bool WriteSymtab, object::Archive::Kind Kind, + bool Deterministic, bool Thin, + std::unique_ptr OldArchiveBuf) { assert((!Thin || !isBSDLike(Kind)) && "Only the gnu format has a thin mode"); SmallString<0> SymNamesBuf; @@ -553,7 +535,7 @@ raw_svector_ostream StringTable(StringTableBuf); Expected> DataOrErr = computeMemberData( - StringTable, SymNames, Kind, Thin, ArcName, Deterministic, NewMembers); + StringTable, SymNames, Kind, Thin, Deterministic, NewMembers); if (Error E = DataOrErr.takeError()) return E; std::vector &Data = *DataOrErr; @@ -630,3 +612,5 @@ return Temp->keep(ArcName); } + +} // namespace llvm Index: llvm/trunk/lib/ToolDrivers/llvm-lib/CMakeLists.txt =================================================================== --- llvm/trunk/lib/ToolDrivers/llvm-lib/CMakeLists.txt +++ llvm/trunk/lib/ToolDrivers/llvm-lib/CMakeLists.txt @@ -1,3 +1,10 @@ +set(LLVM_LINK_COMPONENTS + BinaryFormat + Object + Option + Support + ) + set(LLVM_TARGET_DEFINITIONS Options.td) tablegen(LLVM Options.inc -gen-opt-parser-defs) add_public_tablegen_target(LibOptionsTableGen) Index: llvm/trunk/lib/ToolDrivers/llvm-lib/LibDriver.cpp =================================================================== --- llvm/trunk/lib/ToolDrivers/llvm-lib/LibDriver.cpp +++ llvm/trunk/lib/ToolDrivers/llvm-lib/LibDriver.cpp @@ -208,6 +208,13 @@ // Create an archive file. std::string OutputPath = getOutputPath(&Args, Members[0]); + // llvm-lib uses relative paths for both regular and thin archives, unlike + // standard GNU ar, which only uses relative paths for thin archives and + // basenames for regular archives. + for (NewArchiveMember &Member : Members) + Member.MemberName = + Saver.save(computeArchiveRelativePath(OutputPath, Member.MemberName)); + if (Error E = writeArchive(OutputPath, Members, /*WriteSymtab=*/true, object::Archive::K_GNU, Index: llvm/trunk/test/tools/llvm-ar/flatten-thin-archive-directories.test =================================================================== --- llvm/trunk/test/tools/llvm-ar/flatten-thin-archive-directories.test +++ llvm/trunk/test/tools/llvm-ar/flatten-thin-archive-directories.test @@ -0,0 +1,15 @@ +# This test creates a thin archive in a directory and adds it to a thin archive +# in the parent directory. The relative path should be included when flattening +# the archive. + +RUN: mkdir -p %t/foo +RUN: touch %t/foo/a.txt +RUN: rm -f %t/archive.a %t/foo/archive.a + +# These tests must be run in the same directory as %t/archive.a. cd %t is +# included on each line to make debugging this test case easier. +RUN: cd %t && llvm-ar rcST foo/archive.a foo/a.txt +RUN: cd %t && llvm-ar rcST archive.a foo/archive.a +RUN: cd %t && llvm-ar t archive.a | FileCheck %s --match-full-lines + +CHECK: foo/a.txt Index: llvm/trunk/test/tools/llvm-ar/flatten-thin-archive.test =================================================================== --- llvm/trunk/test/tools/llvm-ar/flatten-thin-archive.test +++ llvm/trunk/test/tools/llvm-ar/flatten-thin-archive.test @@ -6,7 +6,7 @@ # flattened members appearing together. RUN: touch %t-a.txt %t-b.txt %t-c.txt %t-d.txt %t-e.txt -RUN: rm -f %t-a-plus-b.a %t.a +RUN: rm -f %t-a-plus-b.a %t-d-plus-e.a %t.a RUN: llvm-ar rcsT %t-a-plus-b.a %t-a.txt %t-b.txt RUN: llvm-ar rcs %t-d-plus-e.a %t-d.txt %t-e.txt RUN: llvm-ar rcsT %t.a %t-a-plus-b.a %t-c.txt %t-d-plus-e.a Index: llvm/trunk/test/tools/llvm-lib/thin-relative.test =================================================================== --- llvm/trunk/test/tools/llvm-lib/thin-relative.test +++ llvm/trunk/test/tools/llvm-lib/thin-relative.test @@ -0,0 +1,13 @@ +RUN: rm -rf %t +RUN: mkdir -p %t/foo +RUN: cd %t + +RUN: llvm-mc -triple=x86_64-pc-windows-msvc -filetype=obj -o foo/obj.o %S/Inputs/a.s + +RUN: llvm-lib -out:archive.a -llvmlibthin foo/obj.o +RUN: llvm-ar t archive.a | FileCheck %s --check-prefix=PARENT-DIR --match-full-lines +PARENT-DIR: foo/obj.o + +RUN: llvm-lib -out:foo/archive.a -llvmlibthin foo/obj.o +RUN: llvm-ar t foo/archive.a | FileCheck %s --check-prefix=SAME-DIR --match-full-lines +SAME-DIR: foo/obj.o Index: llvm/trunk/tools/llvm-ar/llvm-ar.cpp =================================================================== --- llvm/trunk/tools/llvm-ar/llvm-ar.cpp +++ llvm/trunk/tools/llvm-ar/llvm-ar.cpp @@ -193,6 +193,9 @@ // on the command line. static std::vector Members; +// Static buffer to hold StringRefs. +static BumpPtrAllocator Alloc; + // Extract the member filename from the command line for the [relpos] argument // associated with a, b, and i modifiers static void getRelPos() { @@ -545,6 +548,15 @@ Expected NMOrErr = NewArchiveMember::getOldMember(M, Deterministic); failIfError(NMOrErr.takeError()); + // If the child member we're trying to add is thin, use the path relative to + // the archive it's in, so the file resolves correctly. + if (Thin && FlattenArchive) { + StringSaver Saver(Alloc); + Expected FileNameOrErr = M.getFullName(); + failIfError(FileNameOrErr.takeError()); + NMOrErr->MemberName = + Saver.save(computeArchiveRelativePath(ArchiveName, *FileNameOrErr)); + } if (FlattenArchive && identify_magic(NMOrErr->Buf->getBuffer()) == file_magic::archive) { Expected FileNameOrErr = M.getFullName(); @@ -568,6 +580,13 @@ Expected NMOrErr = NewArchiveMember::getFile(FileName, Deterministic); failIfError(NMOrErr.takeError(), FileName); + StringSaver Saver(Alloc); + // For regular archives, use the basename of the object path for the member + // name. For thin archives, use the full relative paths so the file resolves + // correctly. + NMOrErr->MemberName = + Thin ? Saver.save(computeArchiveRelativePath(ArchiveName, FileName)) + : sys::path::filename(NMOrErr->MemberName); if (FlattenArchive && identify_magic(NMOrErr->Buf->getBuffer()) == file_magic::archive) { object::Archive &Lib = readLibrary(FileName); @@ -581,8 +600,6 @@ return; } } - // Use the basename of the object path for the member name. - NMOrErr->MemberName = sys::path::filename(NMOrErr->MemberName); Members.push_back(std::move(*NMOrErr)); } @@ -672,7 +689,7 @@ computeInsertAction(Operation, Child, Name, MemberI); switch (Action) { case IA_AddOldMember: - addChildMember(Ret, Child); + addChildMember(Ret, Child, /*FlattenArchive=*/Thin); break; case IA_AddNewMember: addMember(Ret, *MemberI); @@ -680,7 +697,7 @@ case IA_Delete: break; case IA_MoveOldMember: - addChildMember(Moved, Child); + addChildMember(Moved, Child, /*FlattenArchive=*/Thin); break; case IA_MoveNewMember: addMember(Moved, *MemberI); @@ -899,7 +916,7 @@ { Error Err = Error::success(); for (auto &Member : Lib.children(Err)) - addChildMember(NewMembers, Member); + addChildMember(NewMembers, Member, /*FlattenArchive=*/Thin); failIfError(std::move(Err)); } break; @@ -951,7 +968,6 @@ static int ar_main(int argc, char **argv) { SmallVector Argv(argv, argv + argc); - BumpPtrAllocator Alloc; StringSaver Saver(Alloc); cl::ExpandResponseFiles(Saver, cl::TokenizeGNUCommandLine, Argv); for (size_t i = 1; i < Argv.size(); ++i) {