::do_assign(char const, char const, unsigned int)'

Full error message


/MyFolder/main.o:: In function `boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::assign(char const*, char const*, unsigned int)':

/usr/include/boost/regex/v4/basic_regex.hpp:425: error: undefined reference to `boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)'

:: error: collect2: ld returned 1 exit status

Cause

Operating system: Ubuntu 10.04 Lucid Lynx

IDE: Qt Creator 2.0.0

Project type: Console Application

Compiler: G++ 4.4.1

Libraries used:

Boost: version 1.40

Download the Qt Creator project 'CppLinkErrorUndefinedReferenceToBoostBasic_regexDo_assign' (zip)

Qt project file


#-------------------------------------------------

#

# Project created by QtCreator 2010-08-06T13:56:29

#

#-------------------------------------------------

QT       += core

QT       -= gui

TARGET = CppRegexExample1

CONFIG   += console

CONFIG   -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

Source code


#include <boost/regex.hpp>



int main()

{

  const boost::regex dutch_zip_code("[a-zA-z]{4}\\d{2}");

}

Solution

Add the following line to the Qt Creator project file:


LIBS += -L/usr/local/lib -lboost_regex

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(C++) undefined reference to 'boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const*, char const*, unsigned int)'

Full error message

Cause

Qt project file

Source code

Solution

(C++) undefined reference to 'boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::do_assign(char const, char const, unsigned int)'