Re: [Boost-users] Installed boost::regex, and it compiles, but can't get it to link

15 Aug 2009


      AMDG

Jerry Davis wrote:
...
I am running ubuntu 9.04
I have built the libs from 1.39.0 with gcc 4.3
and moved them to /usr/local/boost
I have done a $ sudo ldconfig -v and have seen the boost libaries are installed
here is the code, taken from the boost web site:
#include 
#include <iostream>
#include <string>
using namespace std;
int main()
{
    string line;
    boost::regex pat( "^Subject: (Re: |Aw: )*(.*)" );
while (cin)
    {
        getline(cin, line);
        boost::smatch matches;
        if (boost::regex_match(line, matches, pat))
            cout << matches[2] << endl;
    }
}
I can compile ok: g++ -I /usr/local/boost/include/boost-1_39 -c
regex_example.cpp
But when I try to link I get a ton of errors, can anyone tell me what I need
to do next? -- Jerry
$ g++ -I /usr/local/boost/include/boost-1_39
-L /usr/local/boost/lib regex_example.cpp
You need to link to the regex library with -lboost_regex.
(or -lwhatever_the_boost_regex_library_is_named)

In Christ,
Steven Watanabe