i cannot tell why i am having trouble with basic_regex.&nbsp; I followed the installation instructions and had no error on install.&nbsp; <br><br><br>g++ -o example -g -O2 -Wall -W -Wno-unused -fno-strict-aliasing&nbsp;&nbsp; example.cc -lboost_regex
<br>/tmp/ccFmlTDD.o(.text+0x3c): In function `main':<br>/usr/local/include/boost/regex/v4/basic_regex.hpp:253: undefined reference to `boost::basic_regex&lt;char, boost::regex_traits&lt;char, boost::cpp_regex_traits&lt;char&gt; &gt; &gt;::do_assign(char const*, char const*, unsigned)'
<br>collect2: ld returned 1 exit status<br><br>example.cc:<br>
#include &lt;boost/regex.hpp&gt;<br>
using namespace boost;<br>
int main () {<br>
&nbsp;&nbsp; regex expr(&quot;foo&quot;);<br>
&nbsp;&nbsp; return 0;<br>
}<br>
<br>i compiled and installed boost as follows:<br>./tools/build/jam_src/bin.linuxx86/bjam -sHAVE_ICU=1 -sICU_PATH=/usr/local/share/icu/3.6 -sTOOLS=gcc -sPYTHON_ROOT=/usr -sPYTHON_VERSION=2.4 --prefix=/usr/local --exec-prefix=/usr/local --libdir=/usr/local/lib --includedir=/usr/local/include&nbsp; install
<br clear="all"><br><br>thanks for any help<br><br>-- <br>cyphunk://cypherpoet.com