boost filesystem library files can not be linked

[Nils Kassube]

Peng Yu wrote:
> On Mon, Jun 14, 2010 at 11:31 PM, Nils Kassube <kassube at gmx.net> wrote:
> > Peng Yu wrote:
> >> My ubuntu is 10.04. boost was installed from apt-get.
> > 
> > What exactly did you install? I can't find a package "boost".
> > 
> >> I compiled the following code. But the library is not available to
> >> link. I don't find where the library files are. Do I need to
> >> install some other package in order to get the libraries?
> > 
> > If you want to compile your own code, you usually need to install
> > the appropriate -dev packages. I suppose you need libboost-dev in
> > this case, maybe others as well.
> 
> I've already installed the boost packages according to the following
> message. I expect that I don't need to provide -L options as I don't
> need to provide the -I option to g++. As shown in my previous email,
> it is due to a link problem. Therefore, it has some problem of
> finding the library file. I looked at /usr/lib, but I don't find any
> library libboost*.so. I'm wondering if the libraries are installed
> somewhere else that I'm not aware of. Would you please check where
> libboost*.so are installed in your ubuntu system?

I only have very few of those packages installed and these are the
libboost*.so* files I can find on my system:

~/ > find /usr/lib -name libboost\*|grep '\.so'
/usr/lib/libboost_program_options.so.1.40.0
/usr/lib/libboost_date_time.so.1.40.0
/usr/lib/libboost_thread.so.1.40.0

As you can see, there are no *.so files, only *.so.* files. And the *.so
files should be in /usr/lib as well according to apt-file:

~/ > apt-file search libboost|grep '\.so'|head
boostpythongenerator: /usr/lib/generatorrunner/libboostpython_generator.so
boostpythongenerator-dbg: /usr/lib/debug/usr/lib/generatorrunner/libboostpython_generator.so
libboost-date-time1.40-dev: /usr/lib/libboost_date_time-mt.so
libboost-date-time1.40-dev: /usr/lib/libboost_date_time.so
libboost-date-time1.40.0: /usr/lib/libboost_date_time.so.1.40.0
libboost-filesystem1.40-dev: /usr/lib/libboost_filesystem-mt.so
libboost-filesystem1.40-dev: /usr/lib/libboost_filesystem.so
libboost-filesystem1.40.0: /usr/lib/libboost_filesystem.so.1.40.0
libboost-graph1.40-dev: /usr/lib/libboost_graph-mt.so
libboost-graph1.40-dev: /usr/lib/libboost_graph.so

That's only an example - there are many more. You can install apt-file
yourself if you want to see the entire list. Anyway, the *.so files
should be in the -dev packages.


Nils