Re: GHC compile times (was Re: GHC 6.4.3 is stalled)

Joel Reymont wrote:

Thanks for the tip! I'm _really_ interested in why it takes 55 min on Linux and 3+ hours on Mac Intel, though. Any clues?

Building a compiler generally reads/touches/creates a very large number of files. So one possibility is the relative efficiency of the OS filesystem implementation. Apple's HFS+ is reputed to be fairly slow, as are the Microsoft filesystems (VFAT, NTFS), at least compared to the various unix-derived filesystems (UFS, ext2 etc). I recall from a few years back that building nhc98 took twice as long under Windows as under linux, on the very same machine, with the same versions of boot-compilers. The only major variable I could think of at the time was VFAT vs ext2. Regards, Malcolm