On Thu, May 15, 2008 at 02:13:32PM +0100, Richard Kelsall wrote:
Bulat Ziganshin wrote:
Hello Simon,
It's hard to tell what optimisation level your libraries were compiled with. The default setting is -O, but when building binary distributions we usually set it explicitly to -O2. If you got your binary from another source, they might have only used -O.
not surprising that noone answered this question in cafe :)
actually, main Windows builds goes from Sigbjorn Finne afair. may be from Neil too
The builds were always done on MSR machines, although Sigbjorn used to bundle them up into installers. These days the MSR machines make the installers too, with a script from Neil.
For the record I'm using the Windows version of GHC 6.8.2 downloaded from here
I'm pretty sure that's got the libraries built with -O, although I haven't looked for the log of that actual build. We only use -O2 on the Linux builds as far as I can see, but I'm not sure there's a good reason for that. I also don't know why we don't just make our preferred settings the default in the build system; Simon? Thanks Ian