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POlinker error when using tr1::regex
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Id
2860722
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AcceptedAnswerId
2860869
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2
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CommentCount
2
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CreationDate
2010-05-18T20:06:04.713
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0
LastActivityDate
2013-03-05T09:31:35.783
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1
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I've got a program that uses <code>tr1::regex</code>, and while it compiles, it gives me very verbose linker errors. Here's my header file MapObject.hpp: <pre><code>#include <iostream> #include <string> #include <tr1/regex> #include "phBaseObject.hpp" using std::string; namespace phObject { class MapObject: public phBaseObject { private: string color; // must be a hex string represented as "#XXXXXX" static const std::tr1::regex colorRX; // enforces the rule above public: void setColor(const string&); (...) }; } </code></pre> Here's my implementation: <pre><code>#include <iostream> #include <string> #include <tr1/regex> #include "MapObject.hpp" using namespace std; namespace phObject { const tr1::regex MapObject::colorRX("#[a-fA-F0-9]{6}"); void MapObject::setColor(const string& c) { if(tr1::regex_match(c.begin(), c.end(), colorRX)) { color = c; } else cerr << "Invalid color assignment (" << c << ")" << endl; } (...) } </code></pre> and now for the errors: <blockquote> max@max-desktop:~/Desktop/Development/CppPartyHack/PartyHack/lib$ g++ -Wall -std=c++0x MapObject.cpp /tmp/cce5gojG.o: In function <code>std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::basic_regex(char const*, unsigned int)': MapObject.cpp:(.text._ZNSt3tr111basic_regexIcNS_12regex_traitsIcEEEC1EPKcj[std::tr1::basic_regex<char, std::tr1::regex_traits<char> >::basic_regex(char const*, unsigned int)]+0x61): undefined reference to</code>std::tr1::basic_regex >::_M_compile()' /tmp/cce5gojG.o: In function <code>bool std::tr1::regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, char, std::tr1::regex_traits<char> >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::tr1::basic_regex<char, std::tr1::regex_traits<char> > const&, std::bitset<11u>)': MapObject.cpp:(.text._ZNSt3tr111regex_matchIN9__gnu_cxx17__normal_iteratorIPKcSsEEcNS_12regex_traitsIcEEEEbT_S8_RKNS_11basic_regexIT0_T1_EESt6bitsetILj11EE[bool std::tr1::regex_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, char, std::tr1::regex_traits<char> >(__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::tr1::basic_regex<char, std::tr1::regex_traits<char> > const&, std::bitset<11u>)]+0x53): undefined reference to</code>bool std::tr1::regex_match<__gnu_cxx::__normal_iterator, std::allocator > >, std::allocator, std::allocator > > > >, char, std::tr1::regex_traits >(__gnu_cxx::__normal_iterator, std::allocator > >, __gnu_cxx::__normal_iterator, std::allocator > >, std::tr1::match_results<__gnu_cxx::__normal_iterator, std::allocator > >, std::allocator, std::allocator > > > > >&, std::tr1::basic_regex > const&, std::bitset<11u>)' collect2: ld returned 1 exit status </blockquote> I can't really make heads or tails of this, except for the <code>undefined reference to std::tr1::basic_regex</code> near the beginning. Anyone know what's going on?
Tags
<c++><regex><linker-errors>
Title
linker error when using tr1::regex
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PostAcceptedAnswerId
1. PO
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 PTAnswer
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1. This table or related slice is empty.
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1. PTQuestion
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1. This table or related slice is empty.
UserOwnerUserId
1. USMax
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 LTLinked
2. PL
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1. PO
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 PTAnswer
2. PO
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1. VO
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 POlinker error when using tr1::regex
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 VTUpMod
2. VO
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 POlinker error when using tr1::regex
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CommentsPostId
1. COThis comes up constantly. I really wish gcc would just stop distributing the regex header all together so people would get comprehensible compile time errors instead of incomprehensible link time errors.
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 POlinker error when using tr1::regex
 UserUserId
 USTerry Mahaffey
2. COThat, or at least put a descriptive `#error` in it.
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 PostPostId
 POlinker error when using tr1::regex
 UserUserId
 USGeorg Fritzsche

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