[Boost-users] boost filesystem::ifstream for files larger than 2GB on OS X

Subject: [Boost-users] boost filesystem::ifstream for files larger than 2GB on OS X
From: lucasvickers (lucasvickers_at_[hidden])
Date: 2010-03-26 16:10:16

Hello,

I have been using the std::ifstream w/o issue except my data files have
grown > 2GB, and as is well documented it is failing.

I am on OS X 10.6 and I have my executable compiling/running as a x86_64
(64bit) executable.

I read that boost supports a 64bit streamposition in
boost::filesystem::ifstream.  I have compiled boost using darwin ports (I
should state I never specifically said anything about x86_64 during this
compilation).

I have re-run my program and I have the same problem (I use tellg to confirm
the issue is the streamposition).

My questions are:
1 - Does the boost ifstream in fact support large files?
2 - If 1) is true, then what specifically needs to be done to get this
support?
3 - Unrelated, but what do the "-mt" and "-d" added to the dylib file name
mean? (libboost_filesystem-mt-d.dylib)

thanks!
Lucas

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