Hi, I am having a huge problem getting insighttoolkit (ITK) to build due to the fact that it takes a huge amount of disk, memory, and time to build. In fact, the build is now generally failing because either disk or memory is exhausted. The main culprit behind the resource usage is the wrappers for Tcl, Java, and Python. The underlying ITK codebase consists of heavily templated C++ libraries. The wrapping process generates a huge amount of code since many variants of each templated class are instantiated and compiled. Up until the most recent upload, about 10 GB disk was required, which exceeds the capacity of several of the buildd machines, so builds were failing. Builds were also failing due to exhausting the buildd memory. Recently, it was suggested (#640667) that the memory issue was due to building the huge amount of wrapping code using -O3 and that it would be better to use -O2 instead; so upload (3.20.0-14) switched to -O2. However, I also turned on -g (as a side effect) and doubled the disk usage to 22 GB! Now it basically won't build anywhere :-( I can continue to fiddle with the compiler flags to reduce disk requirements. For example, I can remove -g again; however, ITK would still need 10 GB or so, more than some buildds provide. So something more is required. Any ideas? Thanks, -Steve
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