./re2/re2.h:1002:40: error: 'cb' was not declared in this scope
   void Set##type##Hook(type##Callback* cb); \
                                        ^
./re2/re2.h:1005:1: note: in expansion of macro 'DECLARE_HOOK'
 DECLARE_HOOK(DFAStateCacheReset)
 ^
./re2/re2.h:1005:14: error: 'DFAStateCacheResetCallback' does not name a type
 DECLARE_HOOK(DFAStateCacheReset)
              ^
./re2/re2.h:1003:3: note: in definition of macro 'DECLARE_HOOK'
   type##Callback* Get##type##Hook();
   ^
./re2/re2.h:1006:14: error: expected nested-name-specifier before 'DFASearchFailureCallback'
 DECLARE_HOOK(DFASearchFailure)
              ^
./re2/re2.h:1001:9: note: in definition of macro 'DECLARE_HOOK'
   using type##Callback = void(const type&); \
         ^
./re2/re2.h:1006:14: error: 'DFASearchFailureCallback' has not been declared
 DECLARE_HOOK(DFASearchFailure)
              ^
./re2/re2.h:1001:9: note: in definition of macro 'DECLARE_HOOK'
   using type##Callback = void(const type&); \
         ^
./re2/re2.h:1001:24: error: expected ';' before '=' token
   using type##Callback = void(const type&); \
                        ^
./re2/re2.h:1006:1: note: in expansion of macro 'DECLARE_HOOK'
 DECLARE_HOOK(DFASearchFailure)
 ^
./re2/re2.h:1001:24: error: expected unqualified-id before '=' token
   using type##Callback = void(const type&); \
                        ^
./re2/re2.h:1006:1: note: in expansion of macro 'DECLARE_HOOK'
 DECLARE_HOOK(DFASearchFailure)
 ^
./re2/re2.h:1006:14: error: variable or field 'SetDFASearchFailureHook' declared void
 DECLARE_HOOK(DFASearchFailure)
              ^
./re2/re2.h:1002:24: note: in definition of macro 'DECLARE_HOOK'
   void Set##type##Hook(type##Callback* cb); \
                        ^
./re2/re2.h:1006:14: error: 'DFASearchFailureCallback' was not declared in this scope
 DECLARE_HOOK(DFASearchFailure)
              ^
./re2/re2.h:1002:24: note: in definition of macro 'DECLARE_HOOK'
   void Set##type##Hook(type##Callback* cb); \
                        ^
./re2/re2.h:1002:40: error: 'cb' was not declared in this scope
   void Set##type##Hook(type##Callback* cb); \
                                        ^
./re2/re2.h:1006:1: note: in expansion of macro 'DECLARE_HOOK'
 DECLARE_HOOK(DFASearchFailure)
 ^
./re2/re2.h:1006:14: error: 'DFASearchFailureCallback' does not name a type
 DECLARE_HOOK(DFASearchFailure)
              ^
./re2/re2.h:1003:3: note: in definition of macro 'DECLARE_HOOK'
   type##Callback* Get##type##Hook();
   ^
In file included from ./re2/prog.h:23:0,
                 from re2/dfa.cc:44:
./re2/sparse_array.h:123:26: error: expected ',' or '...' before '&&' token
   SparseArray(SparseArray&& src);
                          ^
./re2/sparse_array.h:123:32: error: invalid constructor; you probably meant 're2::SparseArray<Value> (const re2::SparseArray<Value>&)'
   SparseArray(SparseArray&& src);
                                ^
./re2/sparse_array.h:126:37: error: expected ',' or '...' before '&&' token
   SparseArray& operator=(SparseArray&& src);
                                     ^
./re2/sparse_array.h:260:15: warning: non-static data member initializers only available with -std=c++11 or -std=gnu++11 [enabled by default]
   int size_ = 0;
               ^
./re2/sparse_array.h:266:37: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
 SparseArray<Value>::SparseArray() = default;
                                     ^
./re2/sparse_array.h: In copy constructor 're2::SparseArray<Value>::SparseArray(const re2::SparseArray<Value>&)':
./re2/sparse_array.h:273:3: error: 'copy_n' is not a member of 'std'
   std::copy_n(src.sparse_.data(), src.max_size(), sparse_.data());
   ^
./re2/sparse_array.h:274:3: error: 'copy_n' is not a member of 'std'
   std::copy_n(src.dense_.data(), src.max_size(), dense_.data());
   ^
./re2/sparse_array.h: At global scope:
./re2/sparse_array.h:278:44: error: expected ',' or '...' before '&&' token
 SparseArray<Value>::SparseArray(SparseArray&& src)
                                            ^
./re2/sparse_array.h:278:1: error: prototype for 're2::SparseArray<Value>::SparseArray(re2::SparseArray<Value>)' does not match any in class 're2::SparseArray<Value>'
 SparseArray<Value>::SparseArray(SparseArray&& src)
 ^
./re2/sparse_array.h:269:1: error: candidates are: re2::SparseArray<Value>::SparseArray(const re2::SparseArray<Value>&)
 SparseArray<Value>::SparseArray(const SparseArray& src)
 ^
./re2/sparse_array.h:113:12: error:                 re2::SparseArray<Value>::SparseArray(int)
   explicit SparseArray(int max_size);
            ^
./re2/sparse_array.h:266:1: error:                 re2::SparseArray<Value>::SparseArray()
 SparseArray<Value>::SparseArray() = default;
 ^
./re2/sparse_array.h: In member function 're2::SparseArray<Value>& re2::SparseArray<Value>::operator=(const re2::SparseArray<Value>&)':
./re2/sparse_array.h:292:13: error: 'move' is not a member of 'std'
   sparse_ = std::move(a);
             ^
./re2/sparse_array.h:293:12: error: 'move' is not a member of 'std'
   dense_ = std::move(b);
            ^
./re2/sparse_array.h:294:3: error: 'copy_n' is not a member of 'std'
   std::copy_n(src.sparse_.data(), src.max_size(), sparse_.data());
   ^
./re2/sparse_array.h:295:3: error: 'copy_n' is not a member of 'std'
   std::copy_n(src.dense_.data(), src.max_size(), dense_.data());
   ^
./re2/sparse_array.h: At global scope:
./re2/sparse_array.h:300:62: error: expected ',' or '...' before '&&' token
 SparseArray<Value>& SparseArray<Value>::operator=(SparseArray&& src) {
                                                              ^
./re2/sparse_array.h: In member function 're2::SparseArray<Value>& re2::SparseArray<Value>::operator=(re2::SparseArray<Value>)':
./re2/sparse_array.h:301:11: error: 'src' was not declared in this scope
   size_ = src.size_;
           ^
./re2/sparse_array.h:302:13: error: 'move' is not a member of 'std'
   sparse_ = std::move(src.sparse_);
             ^
./re2/sparse_array.h:303:12: error: 'move' is not a member of 'std'
   dense_ = std::move(src.dense_);
            ^
./re2/sparse_array.h: In member function 'void re2::SparseArray<Value>::resize(int)':
./re2/sparse_array.h:334:5: error: 'copy_n' is not a member of 'std'
     std::copy_n(sparse_.data(), old_max_size, a.data());
     ^
./re2/sparse_array.h:335:5: error: 'copy_n' is not a member of 'std'
     std::copy_n(dense_.data(), old_max_size, b.data());
     ^
./re2/sparse_array.h:337:15: error: 'move' is not a member of 'std'
     sparse_ = std::move(a);
               ^
./re2/sparse_array.h:338:14: error: 'move' is not a member of 'std'
     dense_ = std::move(b);
              ^
In file included from ./re2/prog.h:24:0,
                 from re2/dfa.cc:44:
./re2/sparse_set.h: At global scope:
./re2/sparse_set.h:185:15: warning: non-static data member initializers only available with -std=c++11 or -std=gnu++11 [enabled by default]
   int size_ = 0;
               ^
./re2/sparse_set.h:191:35: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
 SparseSetT<Value>::SparseSetT() = default;
                                   ^
./re2/sparse_set.h: In member function 'void re2::SparseSetT<Value>::resize(int)':
./re2/sparse_set.h:205:5: error: 'copy_n' is not a member of 'std'
     std::copy_n(sparse_.data(), old_max_size, a.data());
     ^
./re2/sparse_set.h:206:5: error: 'copy_n' is not a member of 'std'
     std::copy_n(dense_.data(), old_max_size, b.data());
     ^
./re2/sparse_set.h:208:15: error: 'move' is not a member of 'std'
     sparse_ = std::move(a);
               ^
./re2/sparse_set.h:209:14: error: 'move' is not a member of 'std'
     dense_ = std::move(b);
              ^
In file included from re2/dfa.cc:44:0:
./re2/prog.h: At global scope:
./re2/prog.h:65:14: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
     Inst() = default;
              ^
./re2/prog.h:68:25: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
     Inst(const Inst&) = default;
                         ^
./re2/prog.h:69:36: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
     Inst& operator=(const Inst&) = default;
                                    ^
./re2/prog.h:172:22: error: 'std::is_trivial' has not been declared
   static_assert(std::is_trivial<Inst>::value, "Inst must be trivial");
                      ^
./re2/prog.h:172:32: error: expected ',' or '...' before '<' token
   static_assert(std::is_trivial<Inst>::value, "Inst must be trivial");
                                ^
./re2/prog.h:172:69: error: ISO C++ forbids declaration of 'static_assert' with no type [-fpermissive]
   static_assert(std::is_trivial<Inst>::value, "Inst must be trivial");
                                                                     ^
./re2/prog.h:304:9: error: expected nested-name-specifier before 'DFAStateCallback'
   using DFAStateCallback = std::function<void(const int* next, bool match)>;
         ^
./re2/prog.h:304:9: error: using-declaration for non-member at class scope
./re2/prog.h:304:26: error: expected ';' before '=' token
   using DFAStateCallback = std::function<void(const int* next, bool match)>;
                          ^
./re2/prog.h:304:26: error: expected unqualified-id before '=' token
./re2/prog.h:312:44: error: 'DFAStateCallback' does not name a type
   int BuildEntireDFA(MatchKind kind, const DFAStateCallback& cb);
                                            ^
./re2/prog.h:312:62: error: ISO C++ forbids declaration of 'cb' with no type [-fpermissive]
   int BuildEntireDFA(MatchKind kind, const DFAStateCallback& cb);
                                                              ^
./re2/prog.h:381:50: error: '>>' should be '> >' within a nested template argument list
                       std::vector<std::vector<int>>* predvec,
                                                  ^
./re2/prog.h:389:49: error: '>>' should be '> >' within a nested template argument list
                      std::vector<std::vector<int>>* predvec,
                                                 ^
./re2/prog.h:448:3: error: 'once_flag' in namespace 'std' does not name a type
   std::once_flag dfa_first_once_;
   ^
./re2/prog.h:449:3: error: 'once_flag' in namespace 'std' does not name a type
   std::once_flag dfa_longest_once_;
   ^
./re2/prog.h:451:23: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   Prog(const Prog&) = delete;
                       ^
./re2/prog.h:452:34: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   Prog& operator=(const Prog&) = delete;
                                  ^
re2/dfa.cc:99:28: error: 'DFAStateCallback' in 'class re2::Prog' does not name a type
   int BuildAllStates(const Prog::DFAStateCallback& cb);
                            ^
re2/dfa.cc:99:52: error: ISO C++ forbids declaration of 'cb' with no type [-fpermissive]
   int BuildAllStates(const Prog::DFAStateCallback& cb);
                                                    ^
re2/dfa.cc:171:11: error: 'unordered_set' in namespace 'std' does not name a type
   typedef std::unordered_set<State*, StateHash, StateEqual> StateSet;
           ^
re2/dfa.cc:175:9: error: expected nested-name-specifier before 'CacheMutex'
   using CacheMutex = Mutex;
         ^
re2/dfa.cc:175:9: error: using-declaration for non-member at class scope
re2/dfa.cc:175:20: error: expected ';' before '=' token
   using CacheMutex = Mutex;
                    ^
re2/dfa.cc:175:20: error: expected unqualified-id before '=' token
re2/dfa.cc:268:41: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
     SearchParams(const SearchParams&) = delete;
                                         ^
re2/dfa.cc:269:52: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
     SearchParams& operator=(const SearchParams&) = delete;
                                                    ^
re2/dfa.cc:341:3: error: 'CacheMutex' does not name a type
   CacheMutex cache_mutex_;
   ^
re2/dfa.cc:344:3: error: 'StateSet' does not name a type
   StateSet state_cache_;   // All States computed so far.
   ^
re2/dfa.cc:347:21: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   DFA(const DFA&) = delete;
                     ^
re2/dfa.cc:348:32: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   DFA& operator=(const DFA&) = delete;
                                ^
re2/dfa.cc: In constructor 're2::DFA::StartInfo::StartInfo()':
re2/dfa.cc:275:29: error: no matching function for call to 'std::atomic<re2::DFA::State*>::atomic(NULL)'
     StartInfo() : start(NULL) {}
                             ^
re2/dfa.cc:275:29: note: candidate is:
In file included from re2/dfa.cc:29:0:
/home/peko/autobuild/instance-0/output-1/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/atomic:296:7: note: std::atomic<_Tp*>::atomic() [with _Tp = re2::DFA::State]
       atomic() noexcept = default;
       ^
/home/peko/autobuild/instance-0/output-1/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/atomic:296:7: note:   candidate expects 0 arguments, 1 provided
re2/dfa.cc: At global scope:
re2/dfa.cc:419:25: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   Workq(const Workq&) = delete;
                         ^
re2/dfa.cc:420:36: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   Workq& operator=(const Workq&) = delete;
                                    ^
re2/dfa.cc: In member function 're2::DFA::State* re2::DFA::CachedState(int*, int, uint32_t)':
re2/dfa.cc:740:3: error: 'StateSet' has not been declared
   StateSet::iterator it = state_cache_.find(&state);
   ^
re2/dfa.cc:740:22: error: expected ';' before 'it'
   StateSet::iterator it = state_cache_.find(&state);
                      ^
re2/dfa.cc:741:7: error: 'it' was not declared in this scope
   if (it != state_cache_.end()) {
       ^
re2/dfa.cc:741:13: error: 'state_cache_' was not declared in this scope
   if (it != state_cache_.end()) {
             ^
re2/dfa.cc:768:55: error: no matching function for call to 'std::atomic<re2::DFA::State*>::atomic(NULL)'
     (void) new (s->next_ + i) std::atomic<State*>(NULL);
                                                       ^
re2/dfa.cc:768:55: note: candidate is:
In file included from re2/dfa.cc:29:0:
/home/peko/autobuild/instance-0/output-1/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/atomic:296:7: note: std::atomic<_Tp*>::atomic() [with _Tp = re2::DFA::State]
       atomic() noexcept = default;
       ^
/home/peko/autobuild/instance-0/output-1/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/atomic:296:7: note:   candidate expects 0 arguments, 1 provided
re2/dfa.cc:777:3: error: 'state_cache_' was not declared in this scope
   state_cache_.insert(s);
   ^
re2/dfa.cc: In member function 'void re2::DFA::ClearCache()':
re2/dfa.cc:783:3: error: 'StateSet' has not been declared
   StateSet::iterator begin = state_cache_.begin();
   ^
re2/dfa.cc:783:22: error: expected ';' before 'begin'
   StateSet::iterator begin = state_cache_.begin();
                      ^
re2/dfa.cc:784:3: error: 'StateSet' has not been declared
   StateSet::iterator end = state_cache_.end();
   ^
re2/dfa.cc:784:22: error: expected ';' before 'end'
   StateSet::iterator end = state_cache_.end();
                      ^
re2/dfa.cc:785:10: error: 'begin' was not declared in this scope
   while (begin != end) {
          ^
re2/dfa.cc:785:19: error: 'end' was not declared in this scope
   while (begin != end) {
                   ^
re2/dfa.cc:786:5: error: 'StateSet' has not been declared
     StateSet::iterator tmp = begin;
     ^
re2/dfa.cc:786:24: error: expected ';' before 'tmp'
     StateSet::iterator tmp = begin;
                        ^
re2/dfa.cc:790:19: error: 'tmp' was not declared in this scope
     int ninst = (*tmp)->ninst_;
                   ^
re2/dfa.cc:796:3: error: 'state_cache_' was not declared in this scope
   state_cache_.clear();
   ^
re2/dfa.cc: At global scope:
re2/dfa.cc:1116:31: error: expected ')' before '*' token
   explicit RWLocker(CacheMutex* mu);
                               ^
re2/dfa.cc:1126:3: error: 'CacheMutex' does not name a type
   CacheMutex* mu_;
   ^
re2/dfa.cc:1129:31: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   RWLocker(const RWLocker&) = delete;
                               ^
re2/dfa.cc:1130:42: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   RWLocker& operator=(const RWLocker&) = delete;
                                          ^
re2/dfa.cc:1133:24: error: expected constructor, destructor, or type conversion before '(' token
 DFA::RWLocker::RWLocker(CacheMutex* mu) : mu_(mu), writing_(false) {
                        ^
re2/dfa.cc: In member function 'void re2::DFA::RWLocker::LockForWriting()':
re2/dfa.cc:1141:5: error: 'mu_' was not declared in this scope
     mu_->ReaderUnlock();
     ^
re2/dfa.cc: In destructor 're2::DFA::RWLocker::~RWLocker()':
re2/dfa.cc:1149:5: error: 'mu_' was not declared in this scope
     mu_->ReaderUnlock();
     ^
re2/dfa.cc:1151:5: error: 'mu_' was not declared in this scope
     mu_->WriterUnlock();
     ^
re2/dfa.cc: In member function 'void re2::DFA::ResetCache(re2::DFA::RWLocker*)':
re2/dfa.cc:1170:3: error: 'GetDFAStateCacheResetHook' is not a member of 're2::hooks'
   hooks::GetDFAStateCacheResetHook()({
   ^
re2/dfa.cc:1170:37: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11 [enabled by default]
   hooks::GetDFAStateCacheResetHook()({
                                     ^
re2/dfa.cc:1172:7: error: 'state_cache_' was not declared in this scope
       state_cache_.size(),
       ^
re2/dfa.cc: At global scope:
re2/dfa.cc:1219:35: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   StateSaver(const StateSaver&) = delete;
                                   ^
re2/dfa.cc:1220:46: warning: defaulted and deleted functions only available with -std=c++11 or -std=gnu++11 [enabled by default]
   StateSaver& operator=(const StateSaver&) = delete;
                                              ^
re2/dfa.cc: In member function 'bool re2::DFA::InlinedSearchLoop(re2::DFA::SearchParams*)':
re2/dfa.cc:1419:50: error: 'state_cache_' was not declared in this scope
             static_cast<size_t>(p - resetp) < 10*state_cache_.size() &&
                                                  ^
re2/dfa.cc: In member function 'bool re2::DFA::Search(const re2::StringPiece&, const re2::StringPiece&, bool, bool, bool, bool*, const char**, re2::SparseSet*)':
re2/dfa.cc:1752:15: error: 'cache_mutex_' was not declared in this scope
   RWLocker l(&cache_mutex_);
               ^
re2/dfa.cc: In member function 're2::DFA* re2::Prog::GetDFA(re2::Prog::MatchKind)':
re2/dfa.cc:1792:5: error: 'call_once' is not a member of 'std'
     std::call_once(dfa_first_once_, [](Prog* prog) {
     ^
re2/dfa.cc:1792:20: error: 'dfa_first_once_' was not declared in this scope
     std::call_once(dfa_first_once_, [](Prog* prog) {
                    ^
re2/dfa.cc:1794:5: warning: lambda expressions only available with -std=c++11 or -std=gnu++11 [enabled by default]
     }, this);
     ^
re2/dfa.cc:1797:5: error: 'call_once' is not a member of 'std'
     std::call_once(dfa_first_once_, [](Prog* prog) {
     ^
re2/dfa.cc:1797:20: error: 'dfa_first_once_' was not declared in this scope
     std::call_once(dfa_first_once_, [](Prog* prog) {
                    ^
re2/dfa.cc:1799:5: warning: lambda expressions only available with -std=c++11 or -std=gnu++11 [enabled by default]
     }, this);
     ^
re2/dfa.cc:1802:5: error: 'call_once' is not a member of 'std'
     std::call_once(dfa_longest_once_, [](Prog* prog) {
     ^
re2/dfa.cc:1802:20: error: 'dfa_longest_once_' was not declared in this scope
     std::call_once(dfa_longest_once_, [](Prog* prog) {
                    ^
re2/dfa.cc:1807:5: warning: lambda expressions only available with -std=c++11 or -std=gnu++11 [enabled by default]
     }, this);
     ^
re2/dfa.cc: In member function 'bool re2::Prog::SearchDFA(const re2::StringPiece&, const re2::StringPiece&, re2::Prog::Anchor, re2::Prog::MatchKind, re2::StringPiece*, bool*, re2::SparseSet*)':
re2/dfa.cc:1876:5: error: 'GetDFASearchFailureHook' is not a member of 're2::hooks'
     hooks::GetDFASearchFailureHook()({
     ^
re2/dfa.cc:1876:37: warning: extended initializer lists only available with -std=c++11 or -std=gnu++11 [enabled by default]
     hooks::GetDFASearchFailureHook()({
                                     ^
re2/dfa.cc: At global scope:
re2/dfa.cc:1901:31: error: 'DFAStateCallback' in 'class re2::Prog' does not name a type
 int DFA::BuildAllStates(const Prog::DFAStateCallback& cb) {
                               ^
re2/dfa.cc:1901:55: error: ISO C++ forbids declaration of 'cb' with no type [-fpermissive]
 int DFA::BuildAllStates(const Prog::DFAStateCallback& cb) {
                                                       ^
re2/dfa.cc: In member function 'int re2::DFA::BuildAllStates(const int&)':
re2/dfa.cc:1907:15: error: 'cache_mutex_' was not declared in this scope
   RWLocker l(&cache_mutex_);
               ^
re2/dfa.cc:1918:3: error: 'unordered_map' is not a member of 'std'
   std::unordered_map<State*, int> m;
   ^
re2/dfa.cc:1918:27: error: expected primary-expression before '*' token
   std::unordered_map<State*, int> m;
                           ^
re2/dfa.cc:1918:28: error: expected primary-expression before ',' token
   std::unordered_map<State*, int> m;
                            ^
re2/dfa.cc:1918:30: error: expected primary-expression before 'int'
   std::unordered_map<State*, int> m;
                              ^
re2/dfa.cc:1918:30: error: expected ';' before 'int'
re2/dfa.cc:1920:3: error: 'm' was not declared in this scope
   m.emplace(params.start, static_cast<int>(m.size()));
   ^
re2/dfa.cc:1942:18: error: range-based 'for' loops are not allowed in C++98 mode
     for (int c : input) {
                  ^
re2/dfa.cc:1960:45: error: expression cannot be used as a function
          s == FullMatchState || s->IsMatch());
                                             ^
re2/dfa.cc: At global scope:
re2/dfa.cc:1969:48: error: 'DFAStateCallback' does not name a type
 int Prog::BuildEntireDFA(MatchKind kind, const DFAStateCallback& cb) {
                                                ^
re2/dfa.cc:1969:66: error: ISO C++ forbids declaration of 'cb' with no type [-fpermissive]
 int Prog::BuildEntireDFA(MatchKind kind, const DFAStateCallback& cb) {
                                                                  ^
re2/dfa.cc: In member function 'bool re2::DFA::PossibleMatchRange(std::string*, std::string*, int)':
re2/dfa.cc:1992:3: error: 'unordered_map' is not a member of 'std'
   std::unordered_map<State*, int> previously_visited_states;
   ^
re2/dfa.cc:1992:27: error: expected primary-expression before '*' token
   std::unordered_map<State*, int> previously_visited_states;
                           ^
re2/dfa.cc:1992:28: error: expected primary-expression before ',' token
   std::unordered_map<State*, int> previously_visited_states;
                            ^
re2/dfa.cc:1992:30: error: expected primary-expression before 'int'
   std::unordered_map<State*, int> previously_visited_states;
                              ^
re2/dfa.cc:1992:30: error: expected ';' before 'int'
re2/dfa.cc:1995:15: error: 'cache_mutex_' was not declared in this scope
   RWLocker l(&cache_mutex_);
               ^
re2/dfa.cc:2038:9: error: 'previously_visited_states' was not declared in this scope
     if (previously_visited_states[s] > kMaxEltRepetitions)
         ^
re2/dfa.cc:2040:5: error: 'previously_visited_states' was not declared in this scope
     previously_visited_states[s]++;
     ^
re2/dfa.cc:2068:3: error: 'previously_visited_states' was not declared in this scope
   previously_visited_states.clear();
   ^
In file included from re2/dfa.cc:43:0:
./re2/pod_array.h: In member function 'T* re2::PODArray<T>::data() const [with T = int]':
./re2/pod_array.h:26:3: warning: control reaches end of non-void function [-Wreturn-type]
   }
   ^
./re2/pod_array.h: In member function 'T& re2::PODArray<T>::operator[](int) const [with T = re2::Prog::Inst]':
./re2/pod_array.h:34:3: warning: control reaches end of non-void function [-Wreturn-type]
   }
   ^
./re2/pod_array.h: In member function 'T& re2::PODArray<T>::operator[](int) const [with T = int]':
./re2/pod_array.h:34:3: warning: control reaches end of non-void function [-Wreturn-type]
   }
   ^
./re2/pod_array.h: In member function 'int re2::PODArray<T>::size() const [with T = int]':
./re2/pod_array.h:30:3: warning: control reaches end of non-void function [-Wreturn-type]
   }
   ^
re2/dfa.cc: In member function 'int re2::DFA::BuildAllStates(const int&)':
re2/dfa.cc:1966:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
make[1]: *** [Makefile:183: obj/re2/dfa.o] Error 1
make[1]: Leaving directory '/home/peko/autobuild/instance-0/output-1/build/re2-2022-02-01'
make: *** [package/pkg-generic.mk:292: /home/peko/autobuild/instance-0/output-1/build/re2-2022-02-01/.stamp_built] Error 2
make: Leaving directory '/home/peko/autobuild/instance-0/buildroot'