Boost 库未在 Netbeans 中使用 G++ 编译
Posted
技术标签:
【中文标题】Boost 库未在 Netbeans 中使用 G++ 编译【英文标题】:Boost library not compiling in Netbeans with G++ 【发布时间】:2014-11-17 08:00:13 【问题描述】:尝试在某些代码上运行一些正则表达式,但代码无法使用 boost 进行编译。当我安装 netbeans 和它的其余部分时,这个库是用 Cygwin 安装的,没有采取其他步骤。网上的说明不清楚还需要做什么,如果有的话,关于链接器,或者是否一切都应该开箱即用。
#include <iostream>
#include <string>
#include <boost/regex.hpp>
using namespace std;
bool regexValidate (string expr, string teststring)
boost::regex ex(expr);
if ( boost::regex_match (teststring,ex) )
cout << "true";
return true;
// else if (regex_match (teststring,regex("^\s*\d*d\d*\s*$")))
// cout << "true";
// return true;
return false;
int main()
string diceexpr = "^\\s*\\d1,d\\d1,\\s*$";
string teststr = "10d10";
string teststr1 = "1d10";
string teststr2 = " 10d10 ";
cout << teststr << " is ";
if (regexValidate(diceexpr,teststr))
cout << " valid!" << endl;
else
cout << " invalid!" << endl;
cout << teststr1 << " is ";
if (regexValidate(diceexpr,teststr1))
cout << " valid!" << endl;
else
cout << " invalid!" << endl;
cout << teststr2 << " is ";
if (regexValidate(diceexpr,teststr2))
cout << " valid!" << endl;
else
cout << " invalid!" << endl;
return 0;
给定以下输出。
"/usr/bin/make" -f nbproject/Makefile-CIS17A.mk QMAKE= SUBPROJECTS= .build-conf
make[1]: Entering directory '/cygdrive/c/Users/[ ... redacted ... ]/Inclass Experiments'
"/usr/bin/make" -f nbproject/Makefile-CIS17A.mk dist/CIS17A/Cygwin_4.x-Windows/inclass_experiments.exe
make[2]: Entering directory '/cygdrive/c/Users/[ ... redacted ... ]/Inclass Experiments'
mkdir -p dist/CIS17A/Cygwin_4.x-Windows
g++ -std=c++11 -Wall -errors -Wextra -o dist/CIS17A/Cygwin_4.x-Windows/inclass_experiments build/CIS17A/Cygwin_4.x-Windows/main.o
/usr/lib/gcc/i686-pc-cygwin/4.8.3/../../../../i686-pc-cygwin/bin/ld: warning: cannot find entry symbol rrors; defaulting to 00401000
build/CIS17A/Cygwin_4.x-Windows/main.o: In function `regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char> >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char> > > >, char, boost::regex_traits<char> >':
/usr/include/boost/regex/v4/regex_match.hpp:50: undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::string>, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::string> > >, boost::regex_traits<char, boost::c_regex_traits<char> > >::match()'
build/CIS17A/Cygwin_4.x-Windows/main.o: In function `assign':
/usr/include/boost/regex/v4/basic_regex.hpp:382: undefined reference to `boost::basic_regex<char, boost::regex_traits<char, boost::c_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)'
build/CIS17A/Cygwin_4.x-Windows/main.o: In function `ZN5boost9re_detail12perl_matcherIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS6_EEENS_12regex_traitsIcNS_14c_regex_traitsIcEEEEEC1ES6_S6_RNS_13match_resultsIS6_S9_EERKNS_11basic_regexIcSD_EENS_15regex_constants12_match_flagsES6_':
/usr/include/boost/regex/v4/perl_matcher.hpp:374: undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::string>, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::string> > >, boost::regex_traits<char, boost::c_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::c_regex_traits<char> > > const&, boost::regex_constants::_match_flags)'
collect2: error: ld returned 1 exit status
nbproject/Makefile-CIS17A.mk:62: recipe for target 'dist/CIS17A/Cygwin_4.x-Windows/inclass_experiments.exe' failed
make[2]: *** [dist/CIS17A/Cygwin_4.x-Windows/inclass_experiments.exe] Error 1
make[2]: Leaving directory '/cygdrive/c/Users/[ ... redacted ... ]/Inclass Experiments'
nbproject/Makefile-CIS17A.mk:59: recipe for target '.build-conf' failed
make[1]: *** [.build-conf] Error 2
make[1]: Leaving directory '/cygdrive/c/Users/[ ... redacted ... ]/Inclass Experiments'
nbproject/Makefile-impl.mk:39: recipe for target '.build-impl' failed
make: *** [.build-impl] Error 2
BUILD FAILED (exit value 2, total time: 2s)
【问题讨论】:
【参考方案1】:这是一个链接错误。请验证以下两点:
Boost 库集中的一些库需要编译 -
其中包括“正则表达式”库。特别是,链接器需要将您的正则表达式相关代码与两个 Boost 库链接 - boost_system
和 boost_regex
。确保它们已经建成。
告诉链接器这些库的方法完全是
NetBeans 责任 - 所以你需要在你的项目中配置
NetBeans 以这种方式传递有关
链接器的库名称和位置。我曾经在自己的 Makefile 中这样做,但也有其他方法可以做到这一点。您可以在 NetBeans 自己的帮助子系统中找到如何执行此操作的说明 - 只需查找 C/C++ Project Properties Dialog Box: Linker
页面即可。因此,请确保您已将 NetBeans 项目配置为访问 Boost 库。
您可以找到更多信息here。
【讨论】:
以上是关于Boost 库未在 Netbeans 中使用 G++ 编译的主要内容,如果未能解决你的问题,请参考以下文章
React 测试库未在快照中显示输入 onChange 道具
Android Tensorflow Lite C++ .SO 库未在运行时链接