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TesseractSDKをiOSアプリに統合しているときにエラーが発生します。私が従った手順-

1）xcodeで「libtesseract_full.a」をドラッグしました2）xcodeで「tessdata」フォルダをドラッグしました3）xcodeで「baseapi.h」をドラッグしました

今私がTesseractを使用しているとき-

// init the tesseract engine.
tess = new TessBaseAPI();

tess->SimpleInit([dataPath cStringUsingEncoding:NSUTF8StringEncoding],  // Path to tessdata-no ending /.
                 "eng",  // ISO 639-3 string or NULL.
                 false);

以下のエラーが発生します（フレームワークなどが欠落していると思いますが、欠落しているものが取得されていないため、tesseractデモプロジェクトは私のシステムで正常に機能しています）

clang: warning: argument unused during compilation: '-stdc++'
ld: warning: CPU_SUBTYPE_ARM_ALL subtype is deprecated: /Users/saurabhsharma/Desktop/Tess/SnapXv2/libtesseract_full.a(libtesseract_full.o)
Undefined symbols for architecture armv7:
  "std::basic_ostream<char, std::char_traits<char> >& std::operator<<<std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)", referenced from:
      SVNetwork::SVNetwork(char const*, int) in libtesseract_full.a(libtesseract_full.o)
  "std::_Rb_tree_decrement(std::_Rb_tree_node_base*)", referenced from:
      std::_Rb_tree_iterator<std::pair<char const* const, int> >::operator--() in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree_iterator<std::pair<int const, VariableContent*> >::operator--() in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree_iterator<std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > >::operator--() in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree_iterator<std::pair<int const, ScrollView*> >::operator--() in libtesseract_full.a(libtesseract_full.o)
  "std::string::operator+=(char const*)", referenced from:
      ScrollView::SendPolygon() in libtesseract_full.a(libtesseract_full.o)
  "std::ios_base::Init::Init()", referenced from:
      __static_initialization_and_destruction_0(int, int) in libtesseract_full.a(libtesseract_full.o)
      __static_initialization_and_destruction_0(int, int) in libtesseract_full.a(libtesseract_full.o)
  "std::string::size() const", referenced from:
      SVNetwork::Flush() in libtesseract_full.a(libtesseract_full.o)
  "std::__throw_length_error(char const*)", referenced from:
      std::vector<int, std::allocator<int> >::_M_insert_aux(__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > >, int const&) in libtesseract_full.a(libtesseract_full.o)
  "std::string::erase(unsigned long, unsigned long)", referenced from:
      SVNetwork::Flush() in libtesseract_full.a(libtesseract_full.o)
  "std::_Rb_tree_rebalance_for_erase(std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)", referenced from:
      std::_Rb_tree<int, std::pair<int const, ScrollView*>, std::_Select1st<std::pair<int const, ScrollView*> >, std::less<int>, std::allocator<std::pair<int const, ScrollView*> > >::erase(std::_Rb_tree_iterator<std::pair<int const, ScrollView*> >) in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree<std::pair<ScrollView*, SVEventType>, std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> >, std::_Select1st<std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > >, std::less<std::pair<ScrollView*, SVEventType> >, std::allocator<std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > > >::erase(std::_Rb_tree_iterator<std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > >) in libtesseract_full.a(libtesseract_full.o)
  "std::string::length() const", referenced from:
      SVNetwork::Flush() in libtesseract_full.a(libtesseract_full.o)
  "std::string::operator+=(char)", referenced from:
      ScrollView::SendPolygon() in libtesseract_full.a(libtesseract_full.o)
  "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()", referenced from:
      ScrollView::SendPolygon() in libtesseract_full.a(libtesseract_full.o)
      SVNetwork::SVNetwork(char const*, int) in libtesseract_full.a(libtesseract_full.o)
  "std::_Rb_tree_increment(std::_Rb_tree_node_base*)", referenced from:
      std::_Rb_tree_iterator<std::pair<int const, VariableContent*> >::operator++() in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree_iterator<std::pair<char const* const, int> >::operator++() in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree_iterator<std::pair<int const, ScrollView*> >::operator++() in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree_iterator<std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > >::operator++() in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree_iterator<std::pair<int const, ScrollView*> >::operator++(int) in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree_iterator<std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > >::operator++(int) in libtesseract_full.a(libtesseract_full.o)
  "std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)", referenced from:
      std::_Rb_tree<int, std::pair<int const, VariableContent*>, std::_Select1st<std::pair<int const, VariableContent*> >, std::less<int>, std::allocator<std::pair<int const, VariableContent*> > >::_M_insert(std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::pair<int const, VariableContent*> const&) in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree<char const*, std::pair<char const* const, int>, std::_Select1st<std::pair<char const* const, int> >, std::less<char const*>, std::allocator<std::pair<char const* const, int> > >::_M_insert(std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::pair<char const* const, int> const&) in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree<int, std::pair<int const, ScrollView*>, std::_Select1st<std::pair<int const, ScrollView*> >, std::less<int>, std::allocator<std::pair<int const, ScrollView*> > >::_M_insert(std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::pair<int const, ScrollView*> const&) in libtesseract_full.a(libtesseract_full.o)
      std::_Rb_tree<std::pair<ScrollView*, SVEventType>, std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> >, std::_Select1st<std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > >, std::less<std::pair<ScrollView*, SVEventType> >, std::allocator<std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > > >::_M_insert(std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::pair<std::pair<ScrollView*, SVEventType> const, std::pair<SVSemaphore*, SVEvent*> > const&) in libtesseract_full.a(libtesseract_full.o)
  "std::ios_base::Init::~Init()", referenced from:
      ___tcf_0 in libtesseract_full.a(libtesseract_full.o)
      ___tcf_0 in libtesseract_full.a(libtesseract_full.o)
  "std::string::c_str() const", referenced from:
      ScrollView::SendPolygon() in libtesseract_full.a(libtesseract_full.o)
      SVNetwork::Flush() in libtesseract_full.a(libtesseract_full.o)
  "std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()", referenced from:
      ScrollView::SendPolygon() in libtesseract_full.a(libtesseract_full.o)
      SVNetwork::SVNetwork(char const*, int) in libtesseract_full.a(libtesseract_full.o)
  "std::string::append(char const*)", referenced from:
      SVNetwork::Send(char const*) in libtesseract_full.a(libtesseract_full.o)
  "std::cout", referenced from:
      SVNetwork::SVNetwork(char const*, int) in libtesseract_full.a(libtesseract_full.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

どんな助けでもいただければ幸いです。

4

4 に答える 4

20

ビルド設定の「C++標準ライブラリ」を「libstdc++（GNU C ++標準ライブラリ）」に変更しただけで、エラーはなくなりました…ヒントをありがとう@H2CO3。

于 2013-02-14T05:40:30.943 に答える
1

There are several issues:

Firstly ensure the file containing the code:

tess = new TessBaseAPI();
tess->SimpleInit(...);

has a file extension of .mm (Objective-C++) as it uses both Objective-C and C++.

Secondly the library looks like it hasn't been compiled for armv7, so you will need to rebuild it for any architectures you want to support, which will be one or more of armv6, armv7, armv7s and i386 (for the iPhone Simulator).

If you are targeting iOS 5.0+ then that will be all of the above apart from armv6 which isn't supported on later versions of Xcode.

Thirdly, make sure you use the same version of C++ and C++ library in both the library and the app, otherwise bad things will happen.

于 2013-02-13T14:41:27.447 に答える
0

確実に：

C++ 言語の方言は、「GNU++11[-std=gnu++11]」の代わりに「コンパイラのデフォルト」を設定します

C++ 標準ライブラリは、「libc++(C++11 をサポートする LLVM C++ 標準ライブラリ)」ではなく「コンパイラの既定値」を設定します。

また、チェックしてください：

C 言語の方言は、「GNU00 [-std=gnu99]」の代わりに「C00 [-std=c99]」を設定します

tesseract ファイルを適切に参照する必要があります。(ファイルをドラッグ アンド ドロップすると正しく参照されない)

于 2014-03-24T13:26:14.720 に答える