Bijay Panda wrote:

Hi, when i try this locate libboost_filesystem i get path like bellow

bijay@cmp1:~/boost$ locate libboost_filesystem /usr/lib/libboost_filesystem-gcc41-mt-1_34_1.so.1.34.1 /usr/lib/libboost_filesystem-gcc42-1_34_1.so.1.34.1 /usr/lib/libboost_filesystem-gcc42-mt-1_34_1.so.1.34.1 /usr/lib/libboost_filesystem-gcc41-1_34_1.so.1.34.1 /var/cache/apt/archives/libboost_filesystem-gcc41-mt-1_34_1.so.1.34.1 /var/cache/apt/archives/libboost_filesystem-gcc42-1_34_1.so.1.34.1 /var/cache/apt/archives/libboost_filesystem-gcc42-mt-1_34_1.so.1.34.1 /var/cache/apt/archives/libboost_filesystem-gcc41-1_34_1.so.1.34.1 bijay@cmp1:~/boost$ then i tried to compile like this

g++ -o second boostThread.cpp -lboost_filesystem -L/usr/lib/libboost_filesystem-gcc41-1_34_1.so.1.34.1

The option "-L" specifies the directory containing the library (not the library itself). /usr/lib is standard path, so you can omit passing "-L" option. Try this: g++ -o second boostThread.cpp -lboost_filesystem-gcc42-1_34_1 I always create symlinks like /usr/lib/libboost_filesystem.so ---> /usr/lib/libboost_filesystem-gcc42-1_34_1.so after boost installation. This results to something like this: /usr/local/dev/boost-1.37.0/lib/libboost_filesystem.so -> /usr/local/dev/boost-1.37.0/lib/libboost_filesystem-gcc43.so // MANUALLY CREATED /usr/local/dev/boost-1.37.0/lib/libboost_filesystem-gcc43.so -> libboost_filesystem-gcc43-1_37.so.1.37.0 // AUTOMATICALLY CREATED BY BOOST This approach allows write Makefiles independent of gcc and boost versions. Instead of writing -lboost_filesystem-gcc42-1_34_1 you write -lboost_filesystem. It's strange that locate didn't find /usr/lib/libboost_filesystem-gcc42-1_34_1.so It should be symlink to /usr/lib/libboost_filesystem-gcc42-1_34_1.so.1.34.1

it throws the same error.

/usr/bin/ld: cannot find -lboost_filesystem collect2: ld returned 1 exit status

Can u plz help me out.

On Fri, Jan 16, 2009 at 1:14 PM, Dmitry V. Krivenok mailto:krivenok@orangesystem.ru> wrote:

Bijay Panda wrote:

Hi All, I am trying to run boost1.34.1 in ubuntu 7.10. Compiling the program like this

g++ -o fst boostThread.cpp -lboost_filesystem

throws error like bellow.

/usr/bin/ld: cannot find -lboost_filesystem collect2: ld returned 1 exit status

Can any one please tell me how to get rid of this.

g++ can't find shared library libboost_filesystem.so

Provide the path to the library using -L option. For example g++ -o fst boostThread.cpp -lboost_filesystem -L/usr/local/boost-1.34.1/lib

If you don't know where library located try the following commands: sudo updatedb locate libboost_filesystem.so

On my system this command produces this output: krivenok@develop2 10:44:55 ~/dev_builds/boost-trunk/boost/date_time $ locate libboost_filesystem.so /usr/local/old_dev/boost-1.34.1/lib/libboost_filesystem.so /usr/local/dev/boost-1.37.0/lib/libboost_filesystem.so /usr/lib/libboost_filesystem.so krivenok@develop2 10:45:02

-- Thanks & Regards Bijay Kumar Panda

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-- Thanks & Regards Bijay Kumar Panda Mob-9739591816 bijaykumar.mail@gmail.com mailto:bijaykumar.mail@gmail.com bijaykumar_panda@yahoo.com mailto:bijaykumar_panda@yahoo.com

-- Sincerely yours, Dmitry V. Krivenok Orange System Co., Ltd. Saint-Petersburg, Russia work phone: +7 812 332-32-40 cellular phone: +7 921 576-70-91 e-mail: krivenok@orangesystem.ru web: http://www.orangesystem.ru skype: krivenok_dmitry jabber: krivenok_dmitry@jabber.ru icq: 242-526-443