Hi, Just a quick question, it might be pretty obvious but I'm still relatively new at this, so excuse my "noobness." While working on a little app using libalpm, I wanted to use the download callback. But I had a problem, because the total size would always be zero. I didn't understand why it didn't work, especially since it did for pacman, which seemed to do exactly the same as I did. After investigation, I figured out that this was because I needed to use a macro when compiling, namely: #define _FILE_OFFSET_BITS 64 Apparently one of the things this does is turn off_t (type of both size parameters of the dl callback, among other things) into off64_t. I'm guessing that means one more byte to store the data, and therefore explains why with my "regular" off_t I didn't get the correct values. Thing is, I'm not sure how I was supposed to know that using this macro was required of me in order to get things to work properly, so my questions are: - how was I supposed to know? :) As in, is there any indication or something about this written somewhere that I missed? I did look at the README and such, but couldn't find anything. (and if not, shouldn't there be, maybe?) Or is this just usual/common knowledge or something? - any chance there is/are other such things I need to use for things to work properly? I'm guessing not, but just in case... Thanks, -jacky