Std C++ levelDB linker error when linking against 6.14-6.16. #4819

possen · 2020-02-04T22:42:47Z

[REQUIRED] Step 1: Describe your environment

Xcode version: 11.3.1
Firebase SDK version: 6.14 - 6.16
Firebase Component: LevelDB
Component version: 6.14 - 6.16
Installation method: Carthage

[REQUIRED] Step 2: Describe the problem

Steps to reproduce:

When I try to link my library with versions after 6.13 I am getting an error saying it cant find std library symbols when linking the levelDB library. I get this error when I try to link my library to the Firebase SDK. The carthage update command succeeds without error, this is only after linking to my library.

Showing All Messages
Ld /Users/possen/Library/Developer/Xcode/DerivedData/Cores-esachfxxvohxazcdpfwszjvpzqni/Build/Products/Debug-iphonesimulator/SharedCore.framework/SharedCore normal x86_64 (in target 'SharedCore' from project 'Cores')
    cd /Users/possen/Projects/RideCore
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -target x86_64-apple-ios12.0-simulator -dynamiclib -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator13.2.sdk -L/Users/possen/Library/Developer/Xcode/DerivedData/Cores-esachfxxvohxazcdpfwszjvpzqni/Build/Products/Debug-iphonesimulator -F/Users/possen/Library/Developer/Xcode/DerivedData/Cores-esachfxxvohxazcdpfwszjvpzqni/Build/Products/Debug-iphonesimulator -F/Users/possen/Projects/Core/Carthage/Build/iOS -filelist /Users/possen/Library/Developer/Xcode/DerivedData/Cores-esachfxxvohxazcdpfwszjvpzqni/Build/Intermediates.noindex/Cores.build/Debug-iphonesimulator/SharedCore.build/Objects-normal/x86_64/SharedCore.LinkFileList -install_name @executable_path/../Frameworks/SharedCore.framework/SharedCore -Xlinker -rpath -Xlinker /usr/lib/swift -Xlinker -rpath -Xlinker @executable_path/Frameworks -Xlinker -rpath -Xlinker @loader_path/Frameworks -dead_strip -Xlinker -object_path_lto -Xlinker /Users/possen/Library/Developer/Xcode/DerivedData/Cores-esachfxxvohxazcdpfwszjvpzqni/Build/Intermediates.noindex/Cores.build/Debug-iphonesimulator/SharedCore.build/Objects-normal/x86_64/SharedCore_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -Xlinker -objc_abi_version -Xlinker 2 -fobjc-link-runtime -L/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator -L/usr/lib/swift -Xlinker -add_ast_path -Xlinker /Users/possen/Library/Developer/Xcode/DerivedData/Cores-esachfxxvohxazcdpfwszjvpzqni/Build/Intermediates.noindex/Cores.build/Debug-iphonesimulator/SharedCore.build/Objects-normal/x86_64/SharedCore.swiftmodule -ObjC -framework GoogleUtilities -framework FirebaseCore -framework nanopb -framework GTMSessionFetcher -framework FirebaseMessaging -framework FirebaseInstanceID -framework leveldb-library -framework FirebaseAuth -framework FirebaseMessaging -framework FirebaseAnalytics -framework Firebase -framework GoogleAppMeasurement -framework FirebaseDatabase -framework Protobuf -compatibility_version 1 -current_version 9 -Xlinker -dependency_info -Xlinker /Users/possen/Library/Developer/Xcode/DerivedData/Cores-esachfxxvohxazcdpfwszjvpzqni/Build/Intermediates.noindex/Cores.build/Debug-iphonesimulator/SharedCore.build/Objects-normal/x86_64/SharedCore_dependency_info.dat -o /Users/possen/Library/Developer/Xcode/DerivedData/Cores-esachfxxvohxazcdpfwszjvpzqni/Build/Products/Debug-iphonesimulator/SharedCore.framework/SharedCore

Undefined symbols for architecture x86_64:
  "typeinfo for std::__1::ios_base", referenced from:
      typeinfo for std::__1::basic_ios<char, std::__1::char_traits<char> > in leveldb-library(env_posix.o)
  "std::uncaught_exception()", referenced from:
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::sentry::~sentry() in leveldb-library(env_posix.o)
  "std::__1::ios_base::clear(unsigned int)", referenced from:
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(void const*) in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::flush() in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::sentry::~sentry() in leveldb-library(env_posix.o)
  "std::__1::locale::~locale()", referenced from:
      leveldb::PosixLogger::Logv(char const*, __va_list_tag*) in leveldb-library(env_posix.o)
      std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream() in leveldb-library(env_posix.o)
      std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream() in leveldb-library(env_posix.o)
      virtual thunk to std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream() in leveldb-library(env_posix.o)
      virtual thunk to std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream() in leveldb-library(env_posix.o)
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_stringbuf() in leveldb-library(env_posix.o)
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_stringbuf() in leveldb-library(env_posix.o)
      ...
  "std::__1::locale::locale()", referenced from:
      leveldb::PosixLogger::Logv(char const*, __va_list_tag*) in leveldb-library(env_posix.o)
  "std::__1::ios_base::~ios_base()", referenced from:
      leveldb::PosixLogger::Logv(char const*, __va_list_tag*) in leveldb-library(env_posix.o)
      std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream() in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::~basic_ostream() in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::~basic_ostream() in leveldb-library(env_posix.o)
      virtual thunk to std::__1::basic_ostream<char, std::__1::char_traits<char> >::~basic_ostream() in leveldb-library(env_posix.o)
      virtual thunk to std::__1::basic_ostream<char, std::__1::char_traits<char> >::~basic_ostream() in leveldb-library(env_posix.o)
      std::__1::basic_ostringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_ostringstream() in leveldb-library(env_posix.o)
      ...
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::find(char, unsigned long) const", referenced from:
      leveldb::(anonymous namespace)::PosixWritableFile::PosixWritableFile(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, int) in leveldb-library(env_posix.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::append(char const*, unsigned long)", referenced from:
      leveldb::WriteBatchInternal::Append(leveldb::WriteBatch*, leveldb::WriteBatch const*) in leveldb-library(write_batch.o)
      leveldb::DBImpl::DeleteObsoleteFiles() in leveldb-library(db_impl.o)
      leveldb::DestroyDB(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, leveldb::Options const&) in leveldb-library(db_impl.o)
      leveldb::Status::ToString() const in leveldb-library(status.o)
      leveldb::Version::DebugString() const in leveldb-library(version_set.o)
      leveldb::VersionSet::Recover(bool*) in leveldb-library(version_set.o)
      std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > std::__1::operator+<char, std::__1::char_traits<char>, std::__1::allocator<char> >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char const*) in leveldb-library(version_set.o)
      ...
  "std::__1::__thread_struct::__thread_struct()", referenced from:
      leveldb::(anonymous namespace)::PosixEnv::Schedule(void (*)(void*), void*) in leveldb-library(env_posix.o)
      std::__1::thread::thread<void (*&)(void*), void*&, void>(void (*&)(void*), void*&) in leveldb-library(env_posix.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::rfind(char, unsigned long) const", referenced from:
      leveldb::(anonymous namespace)::PosixWritableFile::PosixWritableFile(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, int) in leveldb-library(env_posix.o)
  "std::__1::__throw_system_error(int, char const*)", referenced from:
      leveldb::(anonymous namespace)::PosixEnv::Schedule(void (*)(void*), void*) in leveldb-library(env_posix.o)
      std::__1::thread::thread<void (*&)(void*), void*&, void>(void (*&)(void*), void*&) in leveldb-library(env_posix.o)
  "std::__1::thread::~thread()", referenced from:
      leveldb::(anonymous namespace)::PosixEnv::Schedule(void (*)(void*), void*) in leveldb-library(env_posix.o)
      leveldb::(anonymous namespace)::PosixEnv::StartThread(void (*)(void*), void*) in leveldb-library(env_posix.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::operator=(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
      leveldb::VersionEdit::AddFile(int, unsigned long long, unsigned long long, leveldb::InternalKey const&, leveldb::InternalKey const&) in leveldb-library(db_impl.o)
      leveldb::DBImpl::BackgroundCompaction() in leveldb-library(db_impl.o)
      leveldb::VersionEdit::AddFile(int, unsigned long long, unsigned long long, leveldb::InternalKey const&, leveldb::InternalKey const&) in leveldb-library(version_set.o)
      leveldb::VersionSet::GetRange(std::__1::vector<leveldb::FileMetaData*, std::__1::allocator<leveldb::FileMetaData*> > const&, leveldb::InternalKey*, leveldb::InternalKey*) in leveldb-library(version_set.o)
      leveldb::VersionSet::SetupOtherInputs(leveldb::Compaction*) in leveldb-library(version_set.o)
      leveldb::FindLargestKey(leveldb::InternalKeyComparator const&, std::__1::vector<leveldb::FileMetaData*, std::__1::allocator<leveldb::FileMetaData*> > const&, leveldb::InternalKey*) in leveldb-library(version_set.o)
      leveldb::AddBoundaryInputs(leveldb::InternalKeyComparator const&, std::__1::vector<leveldb::FileMetaData*, std::__1::allocator<leveldb::FileMetaData*> > const&, std::__1::vector<leveldb::FileMetaData*, std::__1::allocator<leveldb::FileMetaData*> >*) in leveldb-library(version_set.o)
      ...
  "___cxa_guard_abort", referenced from:
      leveldb::Env::Default() in leveldb-library(env_posix.o)
  "std::__1::ios_base::__set_badbit_and_consider_rethrow()", referenced from:
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(void const*) in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::flush() in leveldb-library(env_posix.o)
  "___cxa_guard_acquire", referenced from:
      leveldb::BytewiseComparator() in leveldb-library(comparator.o)
      leveldb::Env::Default() in leveldb-library(env_posix.o)
      leveldb::crc32c::Extend(unsigned int, char const*, unsigned long) in leveldb-library(crc32c.o)
  "std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&)", referenced from:
      leveldb::DBImpl::~DBImpl() in leveldb-library(db_impl.o)
      leveldb::DBImpl::TEST_CompactMemTable() in leveldb-library(db_impl.o)
      leveldb::DBImpl::TEST_CompactRange(int, leveldb::Slice const*, leveldb::Slice const*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::Write(leveldb::WriteOptions const&, leveldb::WriteBatch*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::MakeRoomForWrite(bool) in leveldb-library(db_impl.o)
      leveldb::(anonymous namespace)::PosixEnv::BackgroundThreadMain() in leveldb-library(env_posix.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::push_back(char)", referenced from:
      leveldb::WriteBatch::Put(leveldb::Slice const&, leveldb::Slice const&) in leveldb-library(write_batch.o)
      leveldb::WriteBatch::Delete(leveldb::Slice const&) in leveldb-library(write_batch.o)
      leveldb::Version::DebugString() const in leveldb-library(version_set.o)
      leveldb::AppendEscapedStringTo(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*, leveldb::Slice const&) in leveldb-library(logging.o)
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::overflow(int) in leveldb-library(env_posix.o)
      leveldb::FilterBlockBuilder::Finish() in leveldb-library(filter_block.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::compare(unsigned long, unsigned long, char const*, unsigned long) const", referenced from:
      leveldb::VersionSet::Recover(bool*) in leveldb-library(version_set.o)
  "typeinfo for std::length_error", referenced from:
      std::__1::__throw_length_error(char const*) in leveldb-library(db_impl.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_set.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_edit.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(env_posix.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(block_builder.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(filter_block.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(arena.o)
      ...
  "std::__1::ios_base::getloc() const", referenced from:
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(void const*) in leveldb-library(env_posix.o)
  "std::length_error::~length_error()", referenced from:
      std::__1::__throw_length_error(char const*) in leveldb-library(db_impl.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_set.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_edit.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(env_posix.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(block_builder.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(filter_block.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(arena.o)
      ...
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > std::__1::operator+<char, std::__1::char_traits<char>, std::__1::allocator<char> >(char const*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
      leveldb::(anonymous namespace)::PosixEnv::LockFile(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, leveldb::FileLock**) in leveldb-library(env_posix.o)
      leveldb::(anonymous namespace)::PosixEnv::UnlockFile(leveldb::FileLock*) in leveldb-library(env_posix.o)
  "___cxa_throw", referenced from:
      std::__1::__throw_length_error(char const*) in leveldb-library(db_impl.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_set.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_edit.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(env_posix.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(block_builder.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(filter_block.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(arena.o)
      ...
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::append(char const*)", referenced from:
      leveldb::DBImpl::GetProperty(leveldb::Slice const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*) in leveldb-library(db_impl.o)
      leveldb::Version::DebugString() const in leveldb-library(version_set.o)
      leveldb::SetCurrentFile(leveldb::Env*, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long long) in leveldb-library(filename.o)
      leveldb::VersionEdit::DebugString() const in leveldb-library(version_edit.o)
      leveldb::TableBuilder::Finish() in leveldb-library(table_builder.o)
      leveldb::ParsedInternalKey::DebugString() const in leveldb-library(dbformat.o)
      leveldb::AppendNumberTo(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*, unsigned long long) in leveldb-library(logging.o)
      ...
  "vtable for __cxxabiv1::__si_class_type_info", referenced from:
      typeinfo for leveldb::(anonymous namespace)::MemTableInserter in leveldb-library(write_batch.o)
      typeinfo for leveldb::DBImpl in leveldb-library(db_impl.o)
      typeinfo for leveldb::SnapshotImpl in leveldb-library(db_impl.o)
      typeinfo for leveldb::DBImpl::RecoverLogFile(unsigned long long, bool, bool*, leveldb::VersionEdit*, unsigned long long*)::LogReporter in leveldb-library(db_impl.o)
      typeinfo for leveldb::Version::LevelFileNumIterator in leveldb-library(version_set.o)
      typeinfo for leveldb::VersionSet::Recover(bool*)::LogReporter in leveldb-library(version_set.o)
      typeinfo for leveldb::(anonymous namespace)::BytewiseComparatorImpl in leveldb-library(comparator.o)
      ...
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::assign(char const*)", referenced from:
      leveldb::DBImpl::GetProperty(leveldb::Slice const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*) in leveldb-library(db_impl.o)
      leveldb::InternalKey::DebugString() const in leveldb-library(dbformat.o)
      leveldb::(anonymous namespace)::PosixEnv::GetTestDirectory(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*) in leveldb-library(env_posix.o)
  "operator new[](unsigned long)", referenced from:
      leveldb::Status::CopyState(char const*) in leveldb-library(status.o)
      leveldb::Status::Status(leveldb::Status::Code, leveldb::Slice const&, leveldb::Slice const&) in leveldb-library(status.o)
      leveldb::VersionSet::MakeInputIterator(leveldb::Compaction*) in leveldb-library(version_set.o)
      leveldb::(anonymous namespace)::HandleTable::Resize() in leveldb-library(cache.o)
      leveldb::LookupKey::LookupKey(leveldb::Slice const&, unsigned long long) in leveldb-library(dbformat.o)
      leveldb::NewMergingIterator(leveldb::Comparator const*, leveldb::Iterator**, int) in leveldb-library(merger.o)
      leveldb::PosixLogger::Logv(char const*, __va_list_tag*) in leveldb-library(env_posix.o)
      ...
  "std::__1::condition_variable::notify_one()", referenced from:
      leveldb::DBImpl::Write(leveldb::WriteOptions const&, leveldb::WriteBatch*) in leveldb-library(db_impl.o)
      leveldb::(anonymous namespace)::PosixEnv::Schedule(void (*)(void*), void*) in leveldb-library(env_posix.o)
  "___cxa_allocate_exception", referenced from:
      std::__1::__throw_length_error(char const*) in leveldb-library(db_impl.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_set.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_edit.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(env_posix.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(block_builder.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(filter_block.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(arena.o)
      ...
  "vtable for std::length_error", referenced from:
      std::length_error::length_error(char const*) in leveldb-library(db_impl.o)
      std::length_error::length_error(char const*) in leveldb-library(version_set.o)
      std::length_error::length_error(char const*) in leveldb-library(version_edit.o)
      std::length_error::length_error(char const*) in leveldb-library(env_posix.o)
      std::length_error::length_error(char const*) in leveldb-library(block_builder.o)
      std::length_error::length_error(char const*) in leveldb-library(filter_block.o)
      std::length_error::length_error(char const*) in leveldb-library(arena.o)
      ...
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "std::__1::condition_variable::notify_all()", referenced from:
      leveldb::DBImpl::RecordBackgroundError(leveldb::Status const&) in leveldb-library(db_impl.o)
      leveldb::DBImpl::BackgroundCall() in leveldb-library(db_impl.o)
      leveldb::DBImpl::DoCompactionWork(leveldb::DBImpl::CompactionState*) in leveldb-library(db_impl.o)
  "vtable for __cxxabiv1::__vmi_class_type_info", referenced from:
      typeinfo for std::__1::basic_ostream<char, std::__1::char_traits<char> > in leveldb-library(env_posix.o)
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::resize(unsigned long, char)", referenced from:
      leveldb::WriteBatch::Clear() in leveldb-library(write_batch.o)
      leveldb::VersionSet::Recover(bool*) in leveldb-library(version_set.o)
      leveldb::(anonymous namespace)::BytewiseComparatorImpl::FindShortestSeparator(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*, leveldb::Slice const&) const in leveldb-library(comparator.o)
      leveldb::(anonymous namespace)::BytewiseComparatorImpl::FindShortSuccessor(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*) const in leveldb-library(comparator.o)
      leveldb::PosixLogger::Logv(char const*, __va_list_tag*) in leveldb-library(env_posix.o)
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::overflow(int) in leveldb-library(env_posix.o)
      leveldb::BlockBuilder::Add(leveldb::Slice const&, leveldb::Slice const&) in leveldb-library(block_builder.o)
      ...
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::assign(char const*, unsigned long)", referenced from:
      leveldb::WriteBatchInternal::SetContents(leveldb::WriteBatch*, leveldb::Slice const&) in leveldb-library(write_batch.o)
      leveldb::DBImpl::DoCompactionWork(leveldb::DBImpl::CompactionState*) in leveldb-library(db_impl.o)
      leveldb::BuildTable(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, leveldb::Env*, leveldb::Options const&, leveldb::TableCache*, leveldb::Iterator*, leveldb::FileMetaData*) in leveldb-library(builder.o)
      leveldb::SaveValue(void*, leveldb::Slice const&, leveldb::Slice const&) in leveldb-library(version_set.o)
      leveldb::VersionSet::WriteSnapshot(leveldb::log::Writer*) in leveldb-library(version_set.o)
      leveldb::GetInternalKey(leveldb::Slice*, leveldb::InternalKey*) in leveldb-library(version_edit.o)
      leveldb::TableBuilder::Add(leveldb::Slice const&, leveldb::Slice const&) in leveldb-library(table_builder.o)
      ...
  "void std::__1::__sort<std::__1::__less<unsigned long long, unsigned long long>&, unsigned long long*>(unsigned long long*, unsigned long long*, std::__1::__less<unsigned long long, unsigned long long>&)", referenced from:
      leveldb::DBImpl::Recover(leveldb::VersionEdit*, bool*) in leveldb-library(db_impl.o)
  "___cxa_end_catch", referenced from:
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::overflow(int) in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(void const*) in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::flush() in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::sentry::~sentry() in leveldb-library(env_posix.o)
  "std::__1::mutex::unlock()", referenced from:
      leveldb::DBImpl::~DBImpl() in leveldb-library(db_impl.o)
      leveldb::DBImpl::WriteLevel0Table(leveldb::MemTable*, leveldb::VersionEdit*, leveldb::Version*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::CompactRange(leveldb::Slice const*, leveldb::Slice const*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::TEST_CompactMemTable() in leveldb-library(db_impl.o)
      leveldb::DBImpl::TEST_CompactRange(int, leveldb::Slice const*, leveldb::Slice const*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::BackgroundCall() in leveldb-library(db_impl.o)
      leveldb::DBImpl::DoCompactionWork(leveldb::DBImpl::CompactionState*) in leveldb-library(db_impl.o)
      ...
  "std::__1::condition_variable::~condition_variable()", referenced from:
      leveldb::DBImpl::DBImpl(leveldb::Options const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in leveldb-library(db_impl.o)
      leveldb::port::CondVar::~CondVar() in leveldb-library(db_impl.o)
      leveldb::DBImpl::~DBImpl() in leveldb-library(db_impl.o)
      leveldb::DBImpl::Write(leveldb::WriteOptions const&, leveldb::WriteBatch*) in leveldb-library(db_impl.o)
      leveldb::port::CondVar::CondVar(leveldb::port::Mutex*) in leveldb-library(db_impl.o)
      leveldb::Env::Default() in leveldb-library(env_posix.o)
      leveldb::port::CondVar::~CondVar() in leveldb-library(env_posix.o)
      ...
  "std::__1::ctype<char>::id", referenced from:
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(void const*) in leveldb-library(env_posix.o)
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::~basic_string()", referenced from:
      leveldb::DBImpl::~DBImpl() in leveldb-library(db_impl.o)
      leveldb::VersionSet::~VersionSet() (.cold.1) in leveldb-library(version_set.o)
      leveldb::VersionSet::Builder::SaveTo(leveldb::Version*) (.cold.1) in leveldb-library(version_set.o)
      leveldb::(anonymous namespace)::PosixSequentialFile::~PosixSequentialFile() in leveldb-library(env_posix.o)
      leveldb::(anonymous namespace)::PosixRandomAccessFile::~PosixRandomAccessFile() in leveldb-library(env_posix.o)
      leveldb::(anonymous namespace)::PosixMmapReadableFile::~PosixMmapReadableFile() in leveldb-library(env_posix.o)
      leveldb::(anonymous namespace)::PosixWritableFile::~PosixWritableFile() in leveldb-library(env_posix.o)
      ...
  "std::__1::num_put<char, std::__1::ostreambuf_iterator<char, std::__1::char_traits<char> > >::id", referenced from:
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(void const*) in leveldb-library(env_posix.o)
  "std::terminate()", referenced from:
      ___clang_call_terminate in leveldb-library(db_impl.o)
  "std::__1::mutex::lock()", referenced from:
      leveldb::DBImpl::~DBImpl() in leveldb-library(db_impl.o)
      leveldb::DBImpl::WriteLevel0Table(leveldb::MemTable*, leveldb::VersionEdit*, leveldb::Version*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::CompactRange(leveldb::Slice const*, leveldb::Slice const*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::TEST_CompactMemTable() in leveldb-library(db_impl.o)
      leveldb::DBImpl::TEST_CompactRange(int, leveldb::Slice const*, leveldb::Slice const*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::BackgroundCall() in leveldb-library(db_impl.o)
      leveldb::DBImpl::DoCompactionWork(leveldb::DBImpl::CompactionState*) in leveldb-library(db_impl.o)
      ...
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::basic_string(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)", referenced from:
      leveldb::DBImpl::DBImpl(leveldb::Options const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in leveldb-library(db_impl.o)
      leveldb::VersionEdit::AddFile(int, unsigned long long, unsigned long long, leveldb::InternalKey const&, leveldb::InternalKey const&) in leveldb-library(db_impl.o)
      void std::__1::allocator_traits<std::__1::allocator<leveldb::DBImpl::CompactionState::Output> >::construct<leveldb::DBImpl::CompactionState::Output, leveldb::DBImpl::CompactionState::Output const&>(std::__1::allocator<leveldb::DBImpl::CompactionState::Output>&, leveldb::DBImpl::CompactionState::Output*, leveldb::DBImpl::CompactionState::Output const&) in leveldb-library(db_impl.o)
      leveldb::VersionSet::VersionSet(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, leveldb::Options const*, leveldb::TableCache*, leveldb::InternalKeyComparator const*) in leveldb-library(version_set.o)
      leveldb::VersionSet::Builder::Apply(leveldb::VersionEdit*) in leveldb-library(version_set.o)
      leveldb::VersionEdit::SetCompactPointer(int, leveldb::InternalKey const&) in leveldb-library(version_set.o)
      leveldb::VersionEdit::AddFile(int, unsigned long long, unsigned long long, leveldb::InternalKey const&, leveldb::InternalKey const&) in leveldb-library(version_set.o)
      ...
  "std::__1::locale::use_facet(std::__1::locale::id&) const", referenced from:
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(void const*) in leveldb-library(env_posix.o)
  "___cxa_begin_catch", referenced from:
      ___clang_call_terminate in leveldb-library(db_impl.o)
      std::__1::basic_stringbuf<char, std::__1::char_traits<char>, std::__1::allocator<char> >::overflow(int) in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::operator<<(void const*) in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::flush() in leveldb-library(env_posix.o)
      std::__1::basic_ostream<char, std::__1::char_traits<char> >::sentry::~sentry() in leveldb-library(env_posix.o)
  "std::__1::__vector_base_common<true>::__throw_length_error() const", referenced from:
      void std::__1::vector<std::__1::pair<int, leveldb::FileMetaData>, std::__1::allocator<std::__1::pair<int, leveldb::FileMetaData> > >::__push_back_slow_path<std::__1::pair<int, leveldb::FileMetaData> >(std::__1::pair<int, leveldb::FileMetaData>&&) in leveldb-library(db_impl.o)
      void std::__1::vector<unsigned long long, std::__1::allocator<unsigned long long> >::__push_back_slow_path<unsigned long long const&>(unsigned long long const&) in leveldb-library(db_impl.o)
      void std::__1::vector<leveldb::DBImpl::CompactionState::Output, std::__1::allocator<leveldb::DBImpl::CompactionState::Output> >::__push_back_slow_path<leveldb::DBImpl::CompactionState::Output const&>(leveldb::DBImpl::CompactionState::Output const&) in leveldb-library(db_impl.o)
      void std::__1::vector<leveldb::Iterator*, std::__1::allocator<leveldb::Iterator*> >::__push_back_slow_path<leveldb::Iterator*>(leveldb::Iterator*&&) in leveldb-library(db_impl.o)
      std::__1::enable_if<(__is_forward_iterator<std::__1::__wrap_iter<leveldb::FileMetaData* const*> >::value) && (is_constructible<leveldb::FileMetaData*, std::__1::iterator_traits<std::__1::__wrap_iter<leveldb::FileMetaData* const*> >::reference>::value), std::__1::__wrap_iter<leveldb::FileMetaData**> >::type std::__1::vector<leveldb::FileMetaData*, std::__1::allocator<leveldb::FileMetaData*> >::insert<std::__1::__wrap_iter<leveldb::FileMetaData* const*> >(std::__1::__wrap_iter<leveldb::FileMetaData* const*>, std::__1::__wrap_iter<leveldb::FileMetaData* const*>, std::__1::__wrap_iter<leveldb::FileMetaData* const*>) in leveldb-library(version_set.o)
      void std::__1::vector<std::__1::pair<int, leveldb::InternalKey>, std::__1::allocator<std::__1::pair<int, leveldb::InternalKey> > >::__push_back_slow_path<std::__1::pair<int, leveldb::InternalKey> >(std::__1::pair<int, leveldb::InternalKey>&&) in leveldb-library(version_set.o)
      void std::__1::vector<std::__1::pair<int, leveldb::FileMetaData>, std::__1::allocator<std::__1::pair<int, leveldb::FileMetaData> > >::__push_back_slow_path<std::__1::pair<int, leveldb::FileMetaData> >(std::__1::pair<int, leveldb::FileMetaData>&&) in leveldb-library(version_set.o)
      ...
  "std::__1::__thread_struct::~__thread_struct()", referenced from:
      leveldb::(anonymous namespace)::PosixEnv::Schedule(void (*)(void*), void*) in leveldb-library(env_posix.o)
      std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >::~unique_ptr() in leveldb-library(env_posix.o)
      std::__1::thread::thread<void (*&)(void*), void*&, void>(void (*&)(void*), void*&) in leveldb-library(env_posix.o)
  "std::__1::__thread_local_data()", referenced from:
      void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(leveldb::(anonymous namespace)::PosixEnv*), leveldb::(anonymous namespace)::PosixEnv*> >(void*) in leveldb-library(env_posix.o)
      void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(void*), void*> >(void*) in leveldb-library(env_posix.o)
  "std::__1::__basic_string_common<true>::__throw_length_error() const", referenced from:
      -[APLevelDB initWithPath:error:] in FirebaseDatabase(APLevelDB.o)
      leveldb::DBImpl::DeleteObsoleteFiles() in leveldb-library(db_impl.o)
      leveldb::DestroyDB(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, leveldb::Options const&) in leveldb-library(db_impl.o)
      leveldb::Slice::ToString() const in leveldb-library(db_impl.o)
      std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::basic_string<std::nullptr_t>(char const*) in leveldb-library(status.o)
      std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > std::__1::operator+<char, std::__1::char_traits<char>, std::__1::allocator<char> >(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, char const*) in leveldb-library(version_set.o)
      leveldb::Slice::ToString() const in leveldb-library(version_set.o)
      ...
  "operator delete(void*)", referenced from:
      -[APLevelDB initWithPath:error:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB dataForKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB stringForKey:] in FirebaseDatabase(APLevelDB.o)
      leveldb::WriteBatch::WriteBatch() in leveldb-library(write_batch.o)
      leveldb::WriteBatch::~WriteBatch() in leveldb-library(write_batch.o)
      leveldb::WriteBatch::~WriteBatch() in leveldb-library(write_batch.o)
      leveldb::(anonymous namespace)::MemTableInserter::~MemTableInserter() in leveldb-library(write_batch.o)
      ...
  "___cxa_pure_virtual", referenced from:
      vtable for leveldb::WriteBatch::Handler in leveldb-library(write_batch.o)
      vtable for leveldb::DB in leveldb-library(db_impl.o)
      vtable for leveldb::Comparator in leveldb-library(comparator.o)
      vtable for leveldb::Cache in leveldb-library(cache.o)
      vtable for leveldb::FilterPolicy in leveldb-library(filter_policy.o)
      vtable for leveldb::Env in leveldb-library(env.o)
      vtable for leveldb::SequentialFile in leveldb-library(env.o)
      ...
  "std::__1::thread::detach()", referenced from:
      leveldb::(anonymous namespace)::PosixEnv::Schedule(void (*)(void*), void*) in leveldb-library(env_posix.o)
      leveldb::(anonymous namespace)::PosixEnv::StartThread(void (*)(void*), void*) in leveldb-library(env_posix.o)
  "std::__1::mutex::~mutex()", referenced from:
      leveldb::DBImpl::DBImpl(leveldb::Options const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in leveldb-library(db_impl.o)
      leveldb::port::Mutex::~Mutex() in leveldb-library(db_impl.o)
      leveldb::DBImpl::~DBImpl() in leveldb-library(db_impl.o)
      leveldb::NewLRUCache(unsigned long) in leveldb-library(cache.o)
      leveldb::(anonymous namespace)::LRUCache::~LRUCache() in leveldb-library(cache.o)
      leveldb::port::Mutex::~Mutex() in leveldb-library(cache.o)
      leveldb::(anonymous namespace)::ShardedLRUCache::~ShardedLRUCache() in leveldb-library(cache.o)
      ...
  "___gxx_personality_v0", referenced from:
      +[APLevelDB levelDBWithPath:error:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB initWithPath:error:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB setData:forKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB setString:forKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB dataForKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB stringForKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB removeKey:] in FirebaseDatabase(APLevelDB.o)
      ...
  "std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >::basic_string(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, unsigned long, unsigned long, std::__1::allocator<char> const&)", referenced from:
      leveldb::(anonymous namespace)::PosixWritableFile::PosixWritableFile(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, int) in leveldb-library(env_posix.o)
  "___cxa_free_exception", referenced from:
      std::__1::__throw_length_error(char const*) in leveldb-library(db_impl.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_set.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(version_edit.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(env_posix.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(block_builder.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(filter_block.o)
      std::__1::__throw_length_error(char const*) in leveldb-library(arena.o)
      ...
  "operator delete[](void*)", referenced from:
      -[APLevelDB initWithPath:error:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB setData:forKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB setString:forKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB dataForKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB stringForKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB removeKey:] in FirebaseDatabase(APLevelDB.o)
      -[APLevelDB commitWriteBatch:] in FirebaseDatabase(APLevelDB.o)
      ...
  "std::logic_error::logic_error(char const*)", referenced from:
      std::length_error::length_error(char const*) in leveldb-library(db_impl.o)
      std::length_error::length_error(char const*) in leveldb-library(version_set.o)
      std::length_error::length_error(char const*) in leveldb-library(version_edit.o)
      std::length_error::length_error(char const*) in leveldb-library(env_posix.o)
      std::length_error::length_error(char const*) in leveldb-library(block_builder.o)
      std::length_error::length_error(char const*) in leveldb-library(filter_block.o)
      std::length_error::length_error(char const*) in leveldb-library(arena.o)
      ...
  "vtable for __cxxabiv1::__class_type_info", referenced from:
      typeinfo for leveldb::WriteBatch::Handler in leveldb-library(write_batch.o)
      typeinfo for leveldb::Snapshot in leveldb-library(db_impl.o)
      typeinfo for leveldb::DB in leveldb-library(db_impl.o)
      typeinfo for leveldb::Comparator in leveldb-library(comparator.o)
      typeinfo for leveldb::Cache in leveldb-library(cache.o)
      typeinfo for leveldb::FilterPolicy in leveldb-library(filter_policy.o)
      typeinfo for std::__1::basic_streambuf<char, std::__1::char_traits<char> > in leveldb-library(env_posix.o)
      ...
  NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
  "std::__1::ios_base::init(void*)", referenced from:
      leveldb::PosixLogger::Logv(char const*, __va_list_tag*) in leveldb-library(env_posix.o)
  "operator new(unsigned long)", referenced from:
      -[APLevelDB initWithPath:error:] in FirebaseDatabase(APLevelDB.o)
      leveldb::DBImpl::DBImpl(leveldb::Options const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) in leveldb-library(db_impl.o)
      leveldb::DBImpl::DeleteObsoleteFiles() in leveldb-library(db_impl.o)
      leveldb::DBImpl::RecoverLogFile(unsigned long long, bool, bool*, leveldb::VersionEdit*, unsigned long long*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::BackgroundCompaction() in leveldb-library(db_impl.o)
      leveldb::DBImpl::OpenCompactionOutputFile(leveldb::DBImpl::CompactionState*) in leveldb-library(db_impl.o)
      leveldb::DBImpl::NewInternalIterator(leveldb::ReadOptions const&, unsigned long long*, unsigned int*) in leveldb-library(db_impl.o)
      ...
  "___cxa_guard_release", referenced from:
      leveldb::BytewiseComparator() in leveldb-library(comparator.o)
      leveldb::Env::Default() in leveldb-library(env_posix.o)
      leveldb::crc32c::Extend(unsigned int, char const*, unsigned long) in leveldb-library(crc32c.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

if I go back to 6.13 it does not have link errors.

Relevant Code:

Cartfile using 6.14, similar problem with 6.15 and 6.16 does not happen with 6.13:
binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseAnalyticsBinary.json"==6.14
binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseAuthBinary.json"==6.14
binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseDatabaseBinary.json"==6.14
binary "https://dl.google.com/dl/firebase/ios/carthage/FirebaseMessagingBinary.json"==6.14

The text was updated successfully, but these errors were encountered:

paulb777 · 2020-02-04T22:50:17Z

Not sure why, but it looks like the C++ library is not being linked. This might help - https://stackoverflow.com/a/41729038/556617

possen · 2020-02-04T22:56:20Z

That improved the situation now only get but this does not happen when I go back to 6.13.

Undefined symbols for architecture x86_64:
  "_OBJC_CLASS_$_FIRInstallations", referenced from:
      objc-class-ref in FirebaseInstanceID(FIRInstanceID.o)
      objc-class-ref in FirebaseInstanceID(FIRInstanceIDTokenOperation.o)
  "_FIRInstallationIDDidChangeNotification", referenced from:
      -[FIRInstanceID observeFirebaseInstallationIDChanges] in FirebaseInstanceID(FIRInstanceID.o)
  "_kFIRInstallationIDDidChangeNotificationAppNameKey", referenced from:
      -[FIRInstanceID installationIDDidChangeNotificationReceived:] in FirebaseInstanceID(FIRInstanceID.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

possen · 2020-02-04T23:03:33Z

As a side note I do have -ObjC in Other Linker Flags.

morganchen12 · 2020-02-04T23:05:40Z

The last few missing symbols are from the FirebaseInstallatinos framework. It's a newer dependency, so it may not be linked into your project. Can you make sure it's included in your linked binaries and libraries in Xcode?

possen · 2020-02-04T23:13:45Z

OK it links now after I added the PromisesObjC.framework and FirebaseInstallatinos framework.

Undefined symbols for architecture x86_64:
  "_FBLPromiseErrorDomain", referenced from:
      ___60-[FIRSecureStorage getObjectForKey:objectClass:accessGroup:]_block_invoke in FirebaseInstallations(FIRSecureStorage.o)
  "_OBJC_CLASS_$_FBLPromise", referenced from:
      objc-class-ref in FirebaseInstallations(FIRInstallationsIDController.o)
      objc-class-ref in FirebaseInstallations(FIRInstallationsAPIService.o)
      objc-class-ref in FirebaseInstallations(FIRInstallationsIIDStore.o)
      objc-class-ref in FirebaseInstallations(FIRSecureStorage.o)
      objc-class-ref in FirebaseInstallations(FIRInstallationsStore.o)
      objc-class-ref in FirebaseInstallations(FIRInstallationsIIDTokenStore.o)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

But it links now after adding that Promises library. I also had to add the -lc++ to my main app as well as my library. I tested this with 6.16.

possen · 2020-02-04T23:20:41Z

Thanks, it would still be helpful to know why the -lc++ option has to be added in newer versions and maybe the docs need to be updated if this is the new requirement.

paulb777 · 2020-02-04T23:27:17Z

the linker should pick it the -lc++ from the leveldb module.modulemap - Carthage/Build/iOS/leveldb-library.framework/Modules/module.modulemap

I'd like to see a reproducible example or other reports before updating the docs.

possen · 2020-02-04T23:30:31Z

This is what the module map for levelDB looks like (6.16):

framework module leveldb-library {
umbrella header "leveldb-library.h"
export *
module * { export * }
  link "c++"
}

possen · 2020-02-04T23:37:00Z

Looks unchanged to me for 6.13.

framework module leveldb-library {
umbrella header "leveldb-library.h"
export *
module * { export * }
  link "c++"
}

paulb777 · 2020-02-05T01:35:11Z

Are you able to binary search between a project with the working 6.13.0 and not working 6.16.0 to see what's different?

This could also be an issue with a corrupt Xcode module cache in DerivedData. Does removing DerivedData and rebuilding make a difference?

possen · 2020-02-06T18:52:55Z

I regularly delete DerivedData, in fact part of my build scripts because I have had so many issues with it. I will see if I can do a binary diff today. It is very consistent though and our project is not very complex, maybe I can create a small project to reproduce it for you.

paulb777 · 2020-02-06T23:33:36Z

Sounds good. We can dive deeper with a repro case.

nidegen · 2020-02-11T09:40:25Z

hey I ran in the same issue. my repo is https://github.com/nidegen/Sketcher/tree/firebase

nidegen · 2020-02-11T09:45:07Z

Really looking forward to spm binary support 😄

paulb777 · 2020-02-12T17:02:02Z

@nidegen Thanks for the testcase.

I've reproduced there and with the Database quickstart. Investigating ....

paulb777 · 2020-02-12T17:20:56Z

The problem is the FirebaseDatabase module map. See the bottom for the details.

It seems that since leveldb is not actually referenced as a module, the linker does not process its modulemap. The c++ reference must also be in the FirebaseDatabase module map.

We'll fix in the next release. In the meantime, a workaround is to reset the module map as below to the 6.13.0 version or to explicitly add libc++ to the Link Binary With Libraries Build Phase.

$ diff -r 6-17/FirebaseDatabase.framework/ 6-13/FirebaseDatabase.framework/
Binary files 6-17/FirebaseDatabase.framework/FirebaseDatabase and 6-13/FirebaseDatabase.framework/FirebaseDatabase differ
diff -r 6-17/FirebaseDatabase.framework/Modules/module.modulemap 6-13/FirebaseDatabase.framework/Modules/module.modulemap
5a6,8
>   link framework "Security"
>   link framework "SystemConfiguration"
>   link "c++"

nidegen · 2020-02-12T18:11:45Z

awesome, thanks for looking into! i actually remember to have linked it to libc++ in another project:)

looking forward to spm support;)

possen · 2020-02-12T19:04:29Z

Yes, thank you, sorry I did not get a repro case to you, things got busy.

nidegen · 2020-03-02T10:45:20Z

i updated the demo project to 6.18, and the linking of sqlite and libc++ still seem to not be working: https://github.com/nidegen/Sketcher/tree/firebase

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nidegen mentioned this issue Feb 11, 2020

Firebase iOS 6.16.0 manual linking missing symbol #4800

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paulb777 mentioned this issue Feb 12, 2020

Include transitive deps in module maps #4895

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paulb777 closed this as completed in #4895 Feb 13, 2020

rostopira mentioned this issue Mar 11, 2020

Undefined symbols for architecture arm64 #5076

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Std C++ levelDB linker error when linking against 6.14-6.16. #4819

Std C++ levelDB linker error when linking against 6.14-6.16. #4819

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Std C++ levelDB linker error when linking against 6.14-6.16. #4819

Std C++ levelDB linker error when linking against 6.14-6.16. #4819

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possen commented Feb 4, 2020 • edited Loading

[REQUIRED] Step 1: Describe your environment

[REQUIRED] Step 2: Describe the problem

Steps to reproduce:

Relevant Code:

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