"Steven Bosscher" <[EMAIL PROTECTED]> writes: > On 21 Jan 2007 22:13:06 -0800, Ian Lance Taylor <[EMAIL PROTECTED]> wrote: > > Ben Elliston <[EMAIL PROTECTED]> writes: > > > > > I think it's worth raising the minimum required version from 2.5.4 to > > > 2.5.31. > > > > I want to point out that Fedora Core 5 appears to still ship flex > > 2.5.4. At least, that is what flex --version reports. (I didn't > > bother to check this before.) I think we need a very strong reason to > > upgrade our requirements ahead of common distributions. We've already > > run into that problem with MPFR. > > For MPFR, everyone needs to have the latest installed to be able to > build gcc. That is not the case with flex. No-one needs flex at all to > build gcc, except gcc hackers who modify one of the (two or three?) > remaining flex files and regenerate the lexers. So you can't really > compare flex and MPFR this way.
That doesn't sound right. It see flex being run every time I create a new object directory, even though I don't modify the flex input files. We ship gengtype-lex.c with releases, so people building the compiler from releases shouldn't have to worry, but it is still an issue for developers. Ian
