Undefined reference to 'boost::system::generic_category()'?

Undefined reference to 'boost::system::generic_category()'?

it seems that i am unable to see the obvious. I wanted to use some Boost
library features for my project and know i am getting these nice errors
all of a sudden:
Linking CXX executable ATFOR CMakeFiles/ATFOR.dir/stdafx.cc.o: In function
__static_initialization_and_destruction_0(int, int)':
stdafx.cc:(.text+0x3c): undefined reference
toboost::system::generic_category()' stdafx.cc:(.text+0x48): undefined
reference to boost::system::generic_category()' stdafx.cc:(.text+0x54):
undefined reference toboost::system::system_category()'
CMakeFiles/ATFOR.dir/Main.cc.o: In function
__static_initialization_and_destruction_0(int, int)':
Main.cc:(.text+0x29d): undefined reference
toboost::system::generic_category()' Main.cc:(.text+0x2a9): undefined
reference to boost::system::generic_category()' Main.cc:(.text+0x2b5):
undefined reference toboost::system::system_category()' collect2: error:
ld returned 1 exit status
Here you find my CMakeLists.txt, headers, and main: http://pastie.org/8231509
As you can see, i tried a lot playing around with the CMakeLists and i am
pretty sure that i have all headers my project requires. Anyways, i've
never had such errors before and i really appreciate any
suggestions/solutions about what's wrong here since i don't have any ideas
left for now. Thx in advance.