error on boost filesystem - boost

Question

I try to use boost filesystem on my Mac. I only added the following header and got an error when I tried to compile
# include <boost/filesystem.hpp>
the error is
Undefined symbols for architecture x86_64:
"boost::system::generic_category()", referenced from:
__static_initialization_and_destruction_0(int, int) in cclyDZox.o
"boost::system::system_category()", referenced from:
__static_initialization_and_destruction_0(int, int) in cclyDZox.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
any help is appreciated

Answer 1

You need to add the boost_system library:
-lboost_system
to your build command. Note that you will also need to provide the -lboost_system library too.
If your project thereafter builds but moans with something like
dyld: Library not loaded: libboost_filesystem.dylib
you just need to set the environment variable
DYLD_LIBRARY_PATH
to include your
$BOOST_HOME/lib
directory as mentioned here.

Answer 2

I think you should do
g++ -I~/Documents/boost_1_53_0/include -L~/Documents/boost_1_53_0/stage/lib -std=c++11 test1ver1.cpp -lboost_filesystem -lboost_system
The
-I flag points to where the Boost headers are
-L flag points to where the Boost libs are
-lboost_filesystem and -lboost_system flags enabled the link of your binary and the Boost Filesystem and System shared libraries. (Those should be always after the object or source files)
For instance:
#include <boost/filesystem.hpp>
int main() {
boost::filesystem::path path_household_csv("./test");
}