Hello John, I find following *.a *.so but no libboost_regex.so at path :/home/ChandanNilange/work/boost/lib libboost_regex-gcc34-1_34.a libboost_regex-gcc34-1_34.so libboost_regex-gcc34-1_34.so.1.34.0 libboost_regex-gcc34.a libboost_regex-gcc34-d-1_34.a libboost_regex-gcc34-d-1_34.so libboost_regex-gcc34-d-1_34.so.1.34.0 libboost_regex-gcc34-d.a libboost_regex-gcc34-d.so libboost_regex-gcc34-mt-1_34.a libboost_regex-gcc34-mt-1_34.so libboost_regex-gcc34-mt-1_34.so.1.34.0 libboost_regex-gcc34-mt.a libboost_regex-gcc34-mt-d-1_34.a libboost_regex-gcc34-mt-d-1_34.so libboost_regex-gcc34-mt-d-1_34.so.1.34.0 libboost_regex-gcc34-mt-d.a libboost_regex-gcc34-mt-d.so libboost_regex-gcc34-mt.so libboost_regex-gcc34.so Also, I tried with all above *.a by stripping "lib" & .* from their name. However I can get messages like /usr/include/boost/regex/v4/basic_regex.hpp:338: undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char>
::reg_expression(std::allocator<char> const&)'
Do you think I have made some mistake during build. Following were the steps followed => gunzip boost_1_34_0.tar.gz => tar -xvf boost_1_34_0.tar => cd boost_1_34_0 => ./configure --prefix=/home/ChandanNilange/work/boost/ --with-libraries=regex => make install Regards, Chandan --- John Maddock <john@johnmaddock.co.uk> wrote:
Chandan Nilange wrote:
Hello,
I have boost_1_32 version installed at /usr/include/boost Also, I have installed boost_1_34 at another path:/home/myname/work/boost/boost_1_34_0/
Now when I try to run with 1_34 version, it still points to 1_32 version at /usr/include (this is observed when I debug using gdb it refers to /usr/include/boost/regex/v4/match_results.hpp:118)
I tried following things:
1] export
LD_LIBRARY_PATH=/home/myname/work/boost/boost_1_34_0/boost:$LD_LIBRARY_PATH
export
PATH=/home/myname/work/boost/boost_1_34_0/boost:$PATH
Looks right.
2] I am using following command for compilation g++ -c -g -I/home/myname/work/boost/boost_1_34_0/boost ${TEST_FILES_PATH}/${TEST}.c g++ ${TEST}.o -L/home/myname/work/boost/lib -lboost_regex
Looks right: you could double check by checking the value of BOOST_VERSION in your code, and verifying that libboost_regex.so is present in /home/myname/work/boost/lib.
3] I am including boost header in ${TEST}.c as below #include "boost/regex.hpp"
Also looks right.
Basically you have three things to double check:
1) Compile time, that the right headers are included. 2) Link time, that you're linking against the right library. 3) Run time, that LD_LIBRARY_PATH is set right.
Personnally if I were a better man, I'd put a bet on #2, but that's just a guess :-)
HTH, John.
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