Re: [Boost-users] Undefined Reference to 'boost::system::generic_category()'

On 16.06.2016 16:27, Blair Climenhaga wrote:

Hello Leon,

Thanks for your quick response! I'm not sure if I understand what you mean (my fault not yours). I typed "-lboost_system" and "-lboost_thread" into the command line of the terminal however both types it returned the error message "command not found". I assume you mean to add these lines to the .bashrc or to the install file for openfoam. Is this correct? No, I meant append them as the command line parameters to the command you use to (compile and) link whatever program you are building. As the simplest example:

$ g++ a,cpp -o a -lboost_system -lboost_thread or perhaps: $ g++ a,cpp -o a -L /usr/local/lib -lboost_system-mt -lboost_thread-mt as I have to on my Mac where brew Boost gets installed in /usr/local. I'm also not sure whether Ubuntu installs both -mt and non-mt (multi-threading support) variants. Cheers, Leon

You are correct that the boost files are downloaded to the /usr/lib, however searching through the lib directory I find that the most similar libraries to those discussed are the "libboost_system.so.1.54.0" and "libboost_thread.so.1.54.0" files, are these the correct files? Again thank you for all your help, I really appreciate it.

All the best, Blair Climenhaga

------------------------------------------------------------------------ To: boost-users@lists.boost.org From: leon@digiverse.si Date: Thu, 16 Jun 2016 16:07:32 +0200 Subject: Re: [Boost-users] Undefined Reference to 'boost::system::generic_category()'

On 16.06.2016 16:00, Blair Climenhaga wrote:

Thanks Maarten,

How would I go about linking -lboost_system and -lboost_thread? I'm sorry, I am just starting out with Linux. I should say that I am using Ubuntu 14.04. Thanks in advance for any and all help you can provide.

Exactly the way you've written: add "-lboost_system -lboost_thread" to the command line. If you installed Ubuntu's boost-all-dev package the libraries should already be under /usr/li where linker will find t hem;; if not add -L<path-to-directory-containing-libraries> to tell the linker where the libraries are.

Cheers,

Leon

All the best, Blair Climenhaga

------------------------------------------------------------------------ From: maarten@de-vri.es mailto:maarten@de-vri.es Date: Wed, 15 Jun 2016 22:29:16 +0200 To: boost-users@lists.boost.org mailto:boost-users@lists.boost.org Subject: Re: [Boost-users] Undefined Reference to 'boost::system::generic_category()'

On 15 June 2016 at 21:24, Blair Climenhaga mailto:blairclimenhaga@hotmail.ca> wrote:

Hello everyone,

I have been attempting to install OpenFOAM however the boost library has been giving me trouble, most recently reading out these error during OpenFOAM installation.

undefined reference to `boost::system::generic_category()' undefined reference to `boost::system::system_category()'

You need to link with -lboost_system (or equivalent for whatever name your platform uses)​. Most libraries in boost are header only, but that is not true for everything. Boost system is one of the libraries that needs a compiled library.

undefined reference to `boost::detail::set_tss_data(void const*, boost::shared_ptrboost::detail::tss_cleanup_function, void*, bool)' undefined reference to `boost::detail::get_tss_data(void const*)'

Similar problem, link with -lboost_thread​

Regards, ​Maarten

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