"Gaurav Jain-SJR" <Gaurav.Jain@iflexsolutions.com> wrote on 11/19/2007 06:58:42 AM:
Hi,
// samp.cpp Boost Library Example #include <iostream> #include <string> #include <cstdlib> #include <fstream> #include "boost/filesystem/operations.hpp" #include "boost/filesystem/path.hpp" #include "boost/filesystem/exception.hpp" #include "boost/filesystem/convenience.hpp" #include "boost/filesystem/fstream.hpp" using namespace std;
int main( int argc, char* argv[] ) {
if ( argc != 2 ) { std::cout << "Usage: file_size path\n"; return 1; }
std::cout << "sizeof(intmax_t) is " << sizeof(boost::intmax_t) << '\n';
boost::filesystem::path p( argv[1], boost::filesystem::native );
if ( !boost::filesystem::exists( p ) ) { std::cout << "not found: " << argv[1] << std::endl; return 1; }
if ( boost::filesystem::is_directory( p ) ) { std::cout << "not a file: " << argv[1] << std::endl; return 1; }
std::cout << "size of " << argv[1] << " is " << boost::filesystem::file_size( p ) << std::endl; return 0; }
I tried to build the above sample which comes with BOOST File System library on AIX 5.3. It got failed at link time. The detail of this activity is as follow:
Compiler Details: XL C/C++ Enterprise Edition V9.0
OS Details:- AIX 5.3
Boost Version:- 1_34_0 (32 bit build)
Command for building the boost libraries:-
$bjam --v2 install toolset=vacpp --prefix=$HOME/1_34_1/32 --builddir=$HOME/tmp variant=release runtime-link=static,shared threading=single,multi --without-python Jamfile.v2
"samp.cpp":- Compilation Command
$xlC_r -q32 -I/home/1_34_0/include samp.cpp -L/home/1_34_0/lib -lboost_filesystem-xlc-mt-1_34
ld: 0711-317 ERROR: Undefined symbol: .boost::filesystem::detail::last_write_time_api( const std::basic_string<char,std::char_traits<char>,std::allocator<char>
&,int) ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.
Disregard my advice for using the -G option, that option is for shared libraries and likely just deferred the missing symbol until load time. Let me take another look at the problem. The loadmap shows that the symbol is referenced by operations_test.o (likely in samp.o in your case), but no definition for the symbol exists. Chris Cambly IBM XL Compiler Development