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Date: Sat, 21 Jun 2014 12:07:58 +0200
From: Tijl Coosemans <tijl@FreeBSD.org>
To: Ricky Huang <rhuang.work@gmail.com>
Subject: Re: Boost Filesystem fails with FreeBSD 10, clang, and cmake
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On Thu, 19 Jun 2014 18:18:36 -0700 Ricky Huang wrote:
> I am currently migrating to a FreeBSD 10 system which comes default with
> clang language.  I was able to compile Boost just fine.  But when I
> include filesysstem.hpp to it, I get the following error message:
> 
>> Linking CXX executable boost_clang_test
>> /usr/bin/ld: : invalid DSO for symbol `_ZN5boost6system15system_categoryEv' definition
>> /usr/local/lib/libboost_system.so.1.55.0: could not read symbols: Bad value
>> CC: error: linker command failed with exit code 1 (use -v to see invocation)
>> *** Error code 1
>> 
>> Stop.
> 
> I am using cmake as my build system, could it be possible that I need to
> adjust my cmake variables?  I am not sure if I've came to correct forum
> or should this be on Boost, clang, CMake forum(s)?  Please let me know
> if I am at the wrong place…
> 
> 
> The minimum amount of code to induce the problem are the following 2 files:
> 
> CMakeLists.txt:
> 
> cmake_minimum_required(VERSION 2.8)
> 
> # Find and include Boost libraries
> find_package(Boost 1.55 COMPONENTS filesystem REQUIRED)

The error above means the "filesystem" component depends on the "system"
component, so try adding "system" here after "filesystem".