Hi All,
I apologize if this has been brought up before, but I couldn't find any
mention of it. I think the filesystem component of boost v1.33 currently
available as part of the cygwin distribution has been compiled
incorrectly. As mentioned here:
http://boost.org/libs/filesystem/doc/index.htm#Cgywin (sic), it is
necessary to compile with -DBOOST_POSIX on cygwin for POSIX emulation to
work properly; otherwise it uses Windows file names only and does not
work as expected. Here is a simple demonstration:
////////////////////////////
#include <iostream>
#include <boost/filesystem/operations.hpp>
#include <boost/filesystem/exception.hpp>
namespace bfs = boost::filesystem;
int main(int argc, char **argv) {
//arg checking omitted
try {
bfs::directory_iterator di(argv[1]);
}
catch (bfs::filesystem_error &ex) {
std::cerr << ex.what() << '\n';
}
}
////////////////////////////
If you pass something Windows can handle as the argument, such as ".",
then this program works as expected. If you pass a cygwin path, such
as "~" or "/cygdrive/c", it throws an exception:
boost::filesystem::directory_iterator constructor: "\home\Lewis": The
system cannot find the path specified.
or
boost::filesystem::directory_iterator constructor: "\cygdrive\c": The
system cannot find the path specified.
I believe this is precisely the consequence of omitting -DBOOST_POSIX
but cannot confirm with certainty.
Thanks very much to whoever maintains this.
-Lewis
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