openfst使用

1. 安装

本人下载的是openfst-1.5.1版本

(1) ./configure

(2) make

(3) sudo make install

查看/usr/local/bin目录是否生成可执行文件，以及/usr/local/lib目录生成动态库文件libfst.so

2. C++程序

#include <fst/fstlib.h>
using namespace fst;
int main() {
  StdVectorFst fst;

  // Adds state 0 to the initially empty FST and make it the start state.
  fst.AddState();   // 1st state will be state 0 (returned by AddState)
  fst.SetStart(0);  // arg is state ID

  // Adds two arcs exiting state 0.
  // Arc constructor args: ilabel, olabel, weight, dest state ID.
  fst.AddArc(0, StdArc(1, 1, 0.5, 1));  // 1st arg is src state ID
  fst.AddArc(0, StdArc(2, 2, 1.5, 1));

  // Adds state 1 and its arc.
  fst.AddState();
  fst.AddArc(1, StdArc(3, 3, 2.5, 2));

  // Adds state 2 and set its final weight.
  fst.AddState();
  fst.SetFinal(2, 3.5);  // 1st arg is state ID, 2nd arg weight

  fst.Write("binary.fst");

}

Compile&Link:

    g++ -std=c++11 -I/usr/local/include test.cpp -L/usr/local/lib -lfst-ldl

    说明: openfst需要c++11环境

3. eclipse环境部署

　　c++11环境:project右键->Properties->c/c++ build->Settings->GCC C++ Compiler->Miscellaneous -> Other flags后面加上 -std=c++11

   link动态库:project右键->Properties->c/c++ general->Path and Symbols

             library paths添加/usr/local/lib

             libraries添加fst和dl

参考文档

http://stackoverflow.com/questions/10363646/compiling-c11-with-g

http://ubuntuforums.org/showthread.php?t=2151633

http://www.openfst.org/twiki/bin/view/FST/ReadMe

http://www.openfst.org/twiki/bin/view/FST/FstQuickTour

http://bbs.csdn.net/topics/320033177