Re: [boost] Finding the correct library to link (feature request for pkg-config support)

From: Rene Rivera (grafikrobot_at_[hidden])
Date: 2007-07-23 11:16:31

Roger Leigh wrote:
> Vladimir Prus <ghost_at_[hidden]> writes:
> 
>> Roger Leigh wrote:
>>
>>> This project, like many, utilises GNU Autoconf and Automake for its
>>> build system.  I need to determine how to link with the Boost
>>> libraries in order to build the programs in the project.  This is an
>>> issue for many projects which want to link with a Boost library.
>>>
>>>
>>> To illustrate my problem:
>>>
>>>  ls -l /usr/lib/libboost_regex-*.so /usr/lib/libboost_program_options-*.so
>>> lrwxrwxrwx 1 root root 45 2007-07-08 11:48
>>> /usr/lib/libboost_program_options-gcc41-1_34.so ->
>>> libboost_program_options-gcc41-1_34.so.1.34.0 lrwxrwxrwx 1 root root 48
>>> 2007-07-08 11:48 /usr/lib/libboost_program_options-gcc41-mt-1_34.so ->
>>> libboost_program_options-gcc41-mt-1_34.so.1.34.0 lrwxrwxrwx 1 root root 41

>> This indicates a bug with Debian packages. All Linux packagers are supposed
>> to building Boost with the --layout=system option.

I don't remember saying that Linux packagers should use the 
--layout=system option. For that matter, I prefer if everyone uses the 
versioned layout as it produces non-colliding names.

>> Passing such option will
>> produce names like
>>
>>         libboost_program_options-mt.so
> 
> Is this documented anywhere?  I couldn't find any mention of it.

Do you mean is --layout documented?

====
   --layout=<layout>       Determines whether to choose library names
                           and header locations such that multiple
                           versions of Boost or multiple compilers can
                           be used on the same system.

                               versioned (default) - Names of boost
                               binaries include the Boost version
                               number and the name and version of the
                               compiler.  Boost headers are installed
                               in a subdirectory of <HDRDIR> whose
                               name contains the Boost version
                               number.

                               system - Binaries names do not include
                               the Boost version number or the name
                               and version number of the compiler.
                               Boost headers are installed directly
                               into <HDRDIR>.  This option is
                               intended for system integrators who
                               are building distribution packages.
====

And no, --layout=system will not remove the -mt tag. Also for 
--layout=versioned, unversioned links are created which remove the Boost 
version number tag, but not the compiler tag.

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