我正在使用SWIG为某些C类创建
Ruby Wrapper.这是C方法的签名,这给我带来了麻烦:
virtual LogP wordProb(VocabIndex word, const VocabIndex *context);
这是VocabIndex的定义:
#ifdef USE_SHORT_VOCAB
typedef unsigned short VocabIndex;
#else
typedef unsigned int VocabIndex;
#endif
这是我从Ruby脚本调用它的方式:
index = 8
context = [index]
puts ngram.wordProb(index, context)
这是我运行脚本时遇到的错误:
ngram.rb:26:in `wordProb': Expected argument 2 of type VocabIndex const *, but got Array [8] (TypeError)
in SWIG method 'wordProb'
from ngram.rb:26:in `<main>'
我试图解决的问题
在阅读了docs之后(是的,我正在使用SWIG 2.0),我在我的.i文件中尝试了这个:
%module rubylm
%{
#include "srilm-1.7.1/lm/src/Ngram.h"
%}
%include "srilm-1.7.1/lm/src/Counts.h"
%include "srilm-1.7.1/lm/src/Ngram.h"
%include "typemaps.i"
virtual LogP Ngram::wordProb(VocabIndex word, const VocabIndex *INPUT);
swig命令运行正常,但是当我尝试构建包装器库时,我得到了这个:
NgramWrapper_wrap.cxx:148:17: fatal error: tcl.h: No such file or directory
#include <tcl.h>
所以我启动了一个终端(这是一个Ubuntu盒子)并运行:
sudo apt-get install tcl-dev
这安装了tcl 8.6,它将其头文件放在/usr/include/tcl8.6目录中.所以我在Makefile行中添加了include目录,它构建了NgramWrapper_wrap.o:
NgramWrapper_wrap.o: NgramWrapper_wrap.cxx
$(CC) $(CFLAGS) NgramWrapper_wrap.cxx -I $(RUBY_SRC) -I $(MISC_INCLUDE) -I $(DSTRUCT_INCLUDE) -I /usr/include/tcl8.6
但是,我仍然遇到构建错误.而这就是我难倒的地方:
NgramWrapper_wrap.cxx:10812:34: error: ‘RARRAY_LEN’ was not declared in this scope
int size = RARRAY_LEN(objv[3]);
^
NgramWrapper_wrap.cxx:10816:5: error: ‘VALUE’ was not declared in this scope
VALUE *ptr = RARRAY_PTR(objv[3]);
^
NgramWrapper_wrap.cxx:10816:12: error: ‘ptr’ was not declared in this scope
VALUE *ptr = RARRAY_PTR(objv[3]);
^
NgramWrapper_wrap.cxx:10816:36: error: ‘RARRAY_PTR’ was not declared in this scope
VALUE *ptr = RARRAY_PTR(objv[3]);
^
NgramWrapper_wrap.cxx:10819:35: error: ‘StringValuePtr’ was not declared in this scope
arg3[i]= StringValuePtr(*ptr);
^
NgramWrapper_wrap.cxx: In function ‘int _wrap_NgramCountWrapper_run(ClientData, Tcl_Interp*, int, Tcl_Obj* const*)’:
NgramWrapper_wrap.cxx:10908:34: error: ‘RARRAY_LEN’ was not declared in this scope
int size = RARRAY_LEN(objv[3]);
^
NgramWrapper_wrap.cxx:10912:5: error: ‘VALUE’ was not declared in this scope
VALUE *ptr = RARRAY_PTR(objv[3]);
^
NgramWrapper_wrap.cxx:10912:12: error: ‘ptr’ was not declared in this scope
VALUE *ptr = RARRAY_PTR(objv[3]);
^
NgramWrapper_wrap.cxx:10912:36: error: ‘RARRAY_PTR’ was not declared in this scope
VALUE *ptr = RARRAY_PTR(objv[3]);
^
NgramWrapper_wrap.cxx:10915:35: error: ‘StringValuePtr’ was not declared in this scope
arg3[i]= StringValuePtr(*ptr);
我能想到的只是Ruby,Swig和Tcl之间的版本不匹配.但是我怎么知道使用哪个Tcl版本?我搜索文档无济于事……
最佳答案 嗯.
我刚刚做了以下事情
vocal.i
%module rubylm
%{
#include "Ngram.h"
%}
%include "Ngram.h"
%include "typemaps.i"
virtual LogP Ngram::wordProb(VocabIndex word, const VocabIndex *INPUT);
Ngram.h
#pragma once
#ifdef USE_SHORT_VOCAB
typedef unsigned short VocabIndex;
#else
typedef unsigned int VocabIndex;
#endif
typedef int LogP;
class NGram {
public:
LogP wordProb(VocabIndex word, const VocabIndex *context);
};
命令已执行
swig2.0 -ruby -c vocal.i
其次是
g -c vocal_wrap.cxx -I /usr/include / ruby-2.1.0 -I /usr/include / x86_64-linux-gnu / ruby-2.1.0
没有任何错误.你忘了-c选项,为什么需要tcl.h