Re: [Boost-users] boost compilation error

Subject: Re: [Boost-users] boost compilation error
From: Dmitry V. Krivenok (krivenok_at_[hidden])
Date: 2009-01-16 06:11:29

Bijay Panda wrote:
> Hi,
> when i try this locate libboost_filesystem i get path like bellow
>
> bijay_at_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_at_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 
> <krivenok_at_[hidden] <mailto:krivenok_at_[hidden]>> 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_at_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_at_develop2 10:45:02
>
>
>         -- 
>         Thanks & Regards
>         Bijay Kumar Panda
>
>         ------------------------------------------------------------------------
>
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>
>
>     -- 
>     Sincerely yours, Dmitry V. Krivenok
>     Orange System Company
>     Saint-Petersburg, Russia
>     work phone: [phone]
>     cellular phone: [phone]
>     e-mail: krivenok_at_[hidden] <mailto:krivenok_at_[hidden]>
>     web: http://www.orangesystem.ru
>     skype: krivenok_dmitry
>     jabber: krivenok_dmitry_at_[hidden] <mailto:krivenok_dmitry_at_[hidden]>
>     icq: 242-526-443
>
>
>
>
> -- 
> Thanks & Regards
> Bijay Kumar Panda
> Mob-9739591816
> bijaykumar.mail_at_[hidden] <mailto:bijaykumar.mail_at_[hidden]>
> bijaykumar_panda_at_[hidden] <mailto:bijaykumar_panda_at_[hidden]>
>

-- 
Sincerely yours, Dmitry V. Krivenok
Orange System Co., Ltd.
Saint-Petersburg, Russia
work phone: [phone]
cellular phone: [phone]
e-mail: krivenok_at_[hidden]
web: http://www.orangesystem.ru
skype: krivenok_dmitry
jabber: krivenok_dmitry_at_[hidden]
icq: 242-526-443